[INFO] updating cached repository https://github.com/umigv/rust_laser_logger
[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] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 06b0d3ffc7308e7138d139ae81a047c088824c79
[INFO] checking umigv/rust_laser_logger against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumigv%2Frust_laser_logger" "work/builds/worker-2/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/umigv/rust_laser_logger on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/umigv/rust_laser_logger
[INFO] finished tweaking git repo https://github.com/umigv/rust_laser_logger
[INFO] tweaked toml for git repo https://github.com/umigv/rust_laser_logger written to work/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/umigv/rust_laser_logger already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] warning: path `/mnt/big/crater/work/builds/worker-2/source/src/log_laserscan.rs` was erroneously implicitly accepted for library `log_laserscan`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/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" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6d0fe9a18a6d0df51b61c16be9ba91b99fb8db29d3b7ee9dbcb04811fae860a2
[INFO] running `"docker" "start" "-a" "6d0fe9a18a6d0df51b61c16be9ba91b99fb8db29d3b7ee9dbcb04811fae860a2"`
[INFO] [stderr] warning: path `/opt/rustwide/workdir/src/log_laserscan.rs` was erroneously implicitly accepted for library `log_laserscan`,
[INFO] [stderr] please rename the file to `src/lib.rs` or set lib.path in Cargo.toml
[INFO] [stderr]    Compiling rust_laser_logger v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> build.rs:7:6
[INFO] [stderr]   |
[INFO] [stderr] 7 |     let mut dirs = match env::var(variable) {
[INFO] [stderr]   |         ----^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> build.rs:13:6
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut dir_iter = dirs.split(":");
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.93s
[INFO] running `"docker" "inspect" "6d0fe9a18a6d0df51b61c16be9ba91b99fb8db29d3b7ee9dbcb04811fae860a2"`
[INFO] running `"docker" "rm" "-f" "6d0fe9a18a6d0df51b61c16be9ba91b99fb8db29d3b7ee9dbcb04811fae860a2"`
[INFO] [stdout] 6d0fe9a18a6d0df51b61c16be9ba91b99fb8db29d3b7ee9dbcb04811fae860a2