[INFO] updating cached repository https://github.com/euclidr/something-about-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/euclidr/something-about-rust
[INFO] [stderr]    4b0aca4..607f579  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 607f5796c1cc0c96203a3950ddb2835a6fce24a3
[INFO] checking euclidr/something-about-rust against try#00e4530a79c42b21a6ca2ac1edb597c90d21f89f for pr-64672
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Feuclidr%2Fsomething-about-rust" "work/builds/worker-7/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/euclidr/something-about-rust on toolchain 00e4530a79c42b21a6ca2ac1edb597c90d21f89f
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/euclidr/something-about-rust
[INFO] removed workspace from git repo https://github.com/euclidr/something-about-rust
[INFO] finished tweaking git repo https://github.com/euclidr/something-about-rust
[INFO] tweaked toml for git repo https://github.com/euclidr/something-about-rust written to work/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/euclidr/something-about-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr] error: the lock file /mnt/big/crater/work/builds/worker-7/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: unused manifest key: examples
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+00e4530a79c42b21a6ca2ac1edb597c90d21f89f" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1fb3b27316c944fb8372308416a64ddb26e469640d7cbd3fa87a5e6e2b2d16a9
[INFO] running `"docker" "start" "-a" "1fb3b27316c944fb8372308416a64ddb26e469640d7cbd3fa87a5e6e2b2d16a9"`
[INFO] [stderr] warning: unused manifest key: examples
[INFO] [stderr]     Checking something-about-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: patterns aren't allowed in methods without bodies
[INFO] [stderr]   --> examples/impl_trait_mut_param.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 |     fn f1(mut a: String);
[INFO] [stderr]    |           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(patterns_in_fns_without_body)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #35203 <https://github.com/rust-lang/rust/issues/35203>
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.68s
[INFO] running `"docker" "inspect" "1fb3b27316c944fb8372308416a64ddb26e469640d7cbd3fa87a5e6e2b2d16a9"`
[INFO] running `"docker" "rm" "-f" "1fb3b27316c944fb8372308416a64ddb26e469640d7cbd3fa87a5e6e2b2d16a9"`
[INFO] [stdout] 1fb3b27316c944fb8372308416a64ddb26e469640d7cbd3fa87a5e6e2b2d16a9