[INFO] cloning repository https://github.com/416365416c/rust-filer
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/416365416c/rust-filer" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F416365416c%2Frust-filer", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F416365416c%2Frust-filer'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9410c42dea83e38502592743cbcd1721c00dad15
[INFO] checking 416365416c/rust-filer against try#b0d0ea232bdae12fa8da8491a91ae1db029990ef for pr-84037
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F416365416c%2Frust-filer" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/416365416c/rust-filer on toolchain b0d0ea232bdae12fa8da8491a91ae1db029990ef
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/416365416c/rust-filer
[INFO] finished tweaking git repo https://github.com/416365416c/rust-filer
[INFO] tweaked toml for git repo https://github.com/416365416c/rust-filer written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/416365416c/rust-filer already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0db249f22070ba21809a714437e05eceb98a0d61324ac63046817d23e90bb1d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d0db249f22070ba21809a714437e05eceb98a0d61324ac63046817d23e90bb1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0db249f22070ba21809a714437e05eceb98a0d61324ac63046817d23e90bb1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0db249f22070ba21809a714437e05eceb98a0d61324ac63046817d23e90bb1d", kill_on_drop: false }`
[INFO] [stdout] d0db249f22070ba21809a714437e05eceb98a0d61324ac63046817d23e90bb1d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+b0d0ea232bdae12fa8da8491a91ae1db029990ef" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1214ba8815079306decb9b27de0dc40e667c0ebf4c699f99a25e9eb82238c50
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d1214ba8815079306decb9b27de0dc40e667c0ebf4c699f99a25e9eb82238c50", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking env_logger v0.8.3
[INFO] [stderr]     Checking rust_filer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `allow_idx`
[INFO] [stdout]    --> src/lib.rs:126:29
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     let mut allow_idx: u32 = INF;
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_allow_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:126:25
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     let mut allow_idx: u32 = INF;
[INFO] [stdout]     |                         ----^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `allow_idx`
[INFO] [stdout]    --> src/lib.rs:126:29
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     let mut allow_idx: u32 = INF;
[INFO] [stdout]     |                             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_allow_idx`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:126:25
[INFO] [stdout]     |
[INFO] [stdout] 126 |                     let mut allow_idx: u32 = INF;
[INFO] [stdout]     |                         ----^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.53s
[INFO] running `Command { std: "docker" "inspect" "d1214ba8815079306decb9b27de0dc40e667c0ebf4c699f99a25e9eb82238c50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1214ba8815079306decb9b27de0dc40e667c0ebf4c699f99a25e9eb82238c50", kill_on_drop: false }`
[INFO] [stdout] d1214ba8815079306decb9b27de0dc40e667c0ebf4c699f99a25e9eb82238c50