[INFO] updating cached repository https://github.com/Divoolej/binpeeks
[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] 634d875505ca1a90f4691fc00b842f1220456679
[INFO] checking Divoolej/binpeeks against master#c9edc02e8320a9e5799d185910ece7d491f524e6 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2FDivoolej%2Fbinpeeks" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Divoolej/binpeeks on toolchain c9edc02e8320a9e5799d185910ece7d491f524e6-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Divoolej/binpeeks
[INFO] finished tweaking git repo https://github.com/Divoolej/binpeeks
[INFO] tweaked toml for git repo https://github.com/Divoolej/binpeeks written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Divoolej/binpeeks already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/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" "+c9edc02e8320a9e5799d185910ece7d491f524e6-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 602b3326509dece8888fc3a6de7033ddf489bdab5181d11e3d73c00c12fbb17b
[INFO] running `"docker" "start" "-a" "602b3326509dece8888fc3a6de7033ddf489bdab5181d11e3d73c00c12fbb17b"`
[INFO] [stderr]     Checking termion v1.5.1
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]    Compiling syn v0.15.27
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking binpeeks v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: struct is never constructed: `Peeker`
[INFO] [stderr]  --> src/peeker.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Peeker {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/peeker.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   pub fn new(file: File) -> Peeker {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Peeker`
[INFO] [stderr]  --> src/peeker.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct Peeker {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/peeker.rs:9:3
[INFO] [stderr]   |
[INFO] [stderr] 9 |   pub fn new(file: File) -> Peeker {
[INFO] [stderr]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.91s
[INFO] running `"docker" "inspect" "602b3326509dece8888fc3a6de7033ddf489bdab5181d11e3d73c00c12fbb17b"`
[INFO] running `"docker" "rm" "-f" "602b3326509dece8888fc3a6de7033ddf489bdab5181d11e3d73c00c12fbb17b"`
[INFO] [stdout] 602b3326509dece8888fc3a6de7033ddf489bdab5181d11e3d73c00c12fbb17b