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Make the rust-version error recommend cargo update --precise -p crate@ver #10891

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Merged
bors merged 2 commits into from
Aug 9, 2022
Merged

Make the rust-version error recommend cargo update --precise -p crate@ver #10891

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dcbb433
Make the `rust-version` error recommend `cargo update -p crate@ver --…
joshtriplett Jul 23, 2022
934e790
Only show advice to use `cargo update --precise` for non-local packages
joshtriplett Aug 2, 2022
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24 changes: 23 additions & 1 deletion src/cargo/ops/cargo_compile.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -661,12 +661,34 @@ pub fn create_bcx<'a, 'cfg>(
continue;
}

let guidance = if ws.is_ephemeral() {
if ws.ignore_lock() {
"Try re-running cargo install with `--locked`".to_string()
} else {
String::new()
}
} else if !unit.is_local() {
format!(
"Either upgrade to rustc {} or newer, or use\n\
cargo update -p {}@{} --precise ver\n\
where `ver` is the latest version of `{}` supporting rustc {}",
version,
unit.pkg.name(),
unit.pkg.version(),
unit.pkg.name(),
current_version,
)
} else {
String::new()
};

anyhow::bail!(
"package `{}` cannot be built because it requires rustc {} or newer, \
while the currently active rustc version is {}",
while the currently active rustc version is {}\n{}",
unit.pkg,
version,
current_version,
guidance,
);
}
}
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7 changes: 5 additions & 2 deletions tests/testsuite/rust_version.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -124,7 +124,7 @@ fn rust_version_too_high() {
.with_status(101)
.with_stderr(
"error: package `foo v0.0.1 ([..])` cannot be built because it requires \
rustc 1.9876.0 or newer, while the currently active rustc version is [..]",
rustc 1.9876.0 or newer, while the currently active rustc version is [..]\n\n",
)
.run();
p.cargo("build --ignore-rust-version").run();
Expand Down Expand Up @@ -159,7 +159,10 @@ fn rust_version_dependency_fails() {
Downloading crates ...\n \
Downloaded bar v0.0.1 (registry `[..]`)\n\
error: package `bar v0.0.1` cannot be built because it requires \
rustc 1.2345.0 or newer, while the currently active rustc version is [..]",
rustc 1.2345.0 or newer, while the currently active rustc version is [..]\n\
Either upgrade to rustc 1.2345.0 or newer, or use\n\
cargo update -p [email protected] --precise ver\n\
where `ver` is the latest version of `bar` supporting rustc [..]",
)
.run();
p.cargo("build --ignore-rust-version").run();
Expand Down