[INFO] updating cached repository https://github.com/guertinlab/fqdedup
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] ea20cbff76a2b3eb2d838900c46fc0bafd8fe1ba
[INFO] checking guertinlab/fqdedup against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fguertinlab%2Ffqdedup" "/workspace/builds/worker-10/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/guertinlab/fqdedup on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/guertinlab/fqdedup
[INFO] finished tweaking git repo https://github.com/guertinlab/fqdedup
[INFO] tweaked toml for git repo https://github.com/guertinlab/fqdedup written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/guertinlab/fqdedup already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] a37b232af1a443136087dd7687d4a18523643b4a0a9d45ff08b1e9632869ab9a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "a37b232af1a443136087dd7687d4a18523643b4a0a9d45ff08b1e9632869ab9a"`
[INFO] [stderr]     Checking serde v1.0.25
[INFO] [stderr]     Checking memchr v2.0.1
[INFO] [stderr]     Checking patricia_tree v0.1.1
[INFO] [stderr]    Compiling serde_derive_internals v0.18.1
[INFO] [stderr]     Checking aho-corasick v0.6.4
[INFO] [stderr]     Checking regex v0.2.3
[INFO] [stderr]    Compiling serde_derive v1.0.25
[INFO] [stderr]     Checking docopt v0.8.1
[INFO] [stderr]     Checking fqdedup v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:136:21
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 let mut output = File::create(output_filename(&args.arg_filename, args.flag_output)).unwrap();
[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/main.rs:148:17
[INFO] [stderr]     |
[INFO] [stderr] 148 |             let mut output = File::create(output_filename(&args.arg_filename, args.flag_output)).unwrap();
[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/main.rs:136:21
[INFO] [stderr]     |
[INFO] [stderr] 136 |                 let mut output = File::create(output_filename(&args.arg_filename, args.flag_output)).unwrap();
[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/main.rs:148:17
[INFO] [stderr]     |
[INFO] [stderr] 148 |             let mut output = File::create(output_filename(&args.arg_filename, args.flag_output)).unwrap();
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.70s
[INFO] running `"docker" "inspect" "a37b232af1a443136087dd7687d4a18523643b4a0a9d45ff08b1e9632869ab9a"`
[INFO] running `"docker" "rm" "-f" "a37b232af1a443136087dd7687d4a18523643b4a0a9d45ff08b1e9632869ab9a"`
[INFO] [stdout] a37b232af1a443136087dd7687d4a18523643b4a0a9d45ff08b1e9632869ab9a