[INFO] cloning repository https://github.com/wheaton5/distinguishing_kmers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wheaton5/distinguishing_kmers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwheaton5%2Fdistinguishing_kmers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwheaton5%2Fdistinguishing_kmers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 956d14d256c7fea54b7e8b072fc67bc99e98e594
[INFO] checking wheaton5/distinguishing_kmers against master#50e1dc1536264ab71c0850f346b12309477f29f7 for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwheaton5%2Fdistinguishing_kmers" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wheaton5/distinguishing_kmers on toolchain 50e1dc1536264ab71c0850f346b12309477f29f7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wheaton5/distinguishing_kmers
[INFO] finished tweaking git repo https://github.com/wheaton5/distinguishing_kmers
[INFO] tweaked toml for git repo https://github.com/wheaton5/distinguishing_kmers written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/wheaton5/distinguishing_kmers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+50e1dc1536264ab71c0850f346b12309477f29f7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Updating git repository `https://github.com/wheaton5/dna_io.git`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 2c63164f65f7b0d6de9902c84210c7f4100449947dbb42edacc5400796fe9167
[INFO] running `Command { std: "docker" "start" "-a" "2c63164f65f7b0d6de9902c84210c7f4100449947dbb42edacc5400796fe9167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c63164f65f7b0d6de9902c84210c7f4100449947dbb42edacc5400796fe9167", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c63164f65f7b0d6de9902c84210c7f4100449947dbb42edacc5400796fe9167", kill_on_drop: false }`
[INFO] [stdout] 2c63164f65f7b0d6de9902c84210c7f4100449947dbb42edacc5400796fe9167
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+50e1dc1536264ab71c0850f346b12309477f29f7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6da325a0b23bbc93b511e8edace4750ec342604adeebdeb98c756b27e003bd3d
[INFO] running `Command { std: "docker" "start" "-a" "6da325a0b23bbc93b511e8edace4750ec342604adeebdeb98c756b27e003bd3d", kill_on_drop: false }`
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[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.84
[INFO] [stderr]    Compiling thiserror-impl v1.0.25
[INFO] [stderr]    Compiling strum_macros v0.20.1
[INFO] [stderr]    Compiling derive-new v0.5.9
[INFO] [stderr]     Checking thiserror v1.0.25
[INFO] [stderr]     Checking bio-types v0.11.0
[INFO] [stderr]    Compiling rust-htslib v0.24.0
[INFO] [stderr]     Checking serde_json v1.0.35
[INFO] [stderr]     Checking boomphf v0.3.1 (https://github.com/10XGenomics/rust-boomphf?branch=master#56c3f192)
[INFO] [stderr]     Checking debruijn v0.2.0 (https://github.com/10XGenomics/rust-debruijn.git#14c1e770)
[INFO] [stderr]     Checking dna_io v0.1.0 (https://github.com/wheaton5/dna_io.git#a640f47b)
[INFO] [stderr]     Checking distinguishing_kmers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut reader = dna_io::DnaReader::from_path(kmer_file);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:77:25
[INFO] [stdout]    |
[INFO] [stdout] 77 |                     let mut count = kmer_counts.entry(to_hash).or_insert(0);
[INFO] [stdout]    |                         ----^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:71:13
[INFO] [stdout]    |
[INFO] [stdout] 71 |         let mut reader = dna_io::DnaReader::from_path(kmer_file);
[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: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:77:25
[INFO] [stdout]    |
[INFO] [stdout] 77 |                     let mut count = kmer_counts.entry(to_hash).or_insert(0);
[INFO] [stdout]    |                         ----^^^^^
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         help: remove this `mut`
[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 1m 26s
[INFO] running `Command { std: "docker" "inspect" "6da325a0b23bbc93b511e8edace4750ec342604adeebdeb98c756b27e003bd3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da325a0b23bbc93b511e8edace4750ec342604adeebdeb98c756b27e003bd3d", kill_on_drop: false }`
[INFO] [stdout] 6da325a0b23bbc93b511e8edace4750ec342604adeebdeb98c756b27e003bd3d