[INFO] crate muncher 0.5.0 is already in cache
[INFO] checking muncher-0.5.0 against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741
[INFO] extracting crate muncher 0.5.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate muncher 0.5.0 on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate muncher 0.5.0
[INFO] finished tweaking crates.io crate muncher 0.5.0
[INFO] tweaked toml for crates.io crate muncher 0.5.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 654495a230efc5c1b7db7894b80aa0f923ddecdf755b76144af41fecb6637074
[INFO] running `"docker" "start" "-a" "654495a230efc5c1b7db7894b80aa0f923ddecdf755b76144af41fecb6637074"`
[INFO] [stderr]     Checking muncher v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/muncher.rs:692:13
[INFO] [stderr]     |
[INFO] [stderr] 692 |         let s = munch.eat_until(|ch| ch == &'c').collect::<String>();
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `s`
[INFO] [stderr]    --> src/muncher.rs:698:13
[INFO] [stderr]     |
[INFO] [stderr] 698 |         let s = munch.eat_until(|ch| ch == &'g').collect::<String>();
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_s`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/muncher.rs:756:13
[INFO] [stderr]     |
[INFO] [stderr] 756 |         let mut munch = Muncher::new(input);
[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]    --> src/muncher.rs:765:13
[INFO] [stderr]     |
[INFO] [stderr] 765 |         let mut munch = Muncher::new(input);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/muncher.rs:810:13
[INFO] [stderr]     |
[INFO] [stderr] 810 |         let mut munch = Muncher::new(input);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/muncher.rs:821:13
[INFO] [stderr]     |
[INFO] [stderr] 821 |         let mut munch = Muncher::new(input);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/muncher.rs:832:13
[INFO] [stderr]     |
[INFO] [stderr] 832 |         let mut munch = Muncher::new(input);
[INFO] [stderr]     |             ----^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.66s
[INFO] running `"docker" "inspect" "654495a230efc5c1b7db7894b80aa0f923ddecdf755b76144af41fecb6637074"`
[INFO] running `"docker" "rm" "-f" "654495a230efc5c1b7db7894b80aa0f923ddecdf755b76144af41fecb6637074"`
[INFO] [stdout] 654495a230efc5c1b7db7894b80aa0f923ddecdf755b76144af41fecb6637074