[INFO] cloning repository https://github.com/bhillmann/rustacean
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bhillmann/rustacean" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhillmann%2Frustacean", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhillmann%2Frustacean'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bd366f9bc8597d189b7890e27efc6b9e6bc8e8af
[INFO] checking bhillmann/rustacean against master#bd71213cf0a765705e7d72a099151bd4eb465ccb for pr-123864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhillmann%2Frustacean" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bhillmann/rustacean on toolchain bd71213cf0a765705e7d72a099151bd4eb465ccb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd71213cf0a765705e7d72a099151bd4eb465ccb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bhillmann/rustacean
[INFO] finished tweaking git repo https://github.com/bhillmann/rustacean
[INFO] tweaked toml for git repo https://github.com/bhillmann/rustacean written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bhillmann/rustacean already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd71213cf0a765705e7d72a099151bd4eb465ccb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[ERROR] this task or one of its parent failed!
[ERROR] no output for 300 seconds
[ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace.
[INFO] checking bhillmann/rustacean against try#c0f799aeda763fc507814da0dc46c2dde7ca9133 for pr-123864
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbhillmann%2Frustacean" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bhillmann/rustacean on toolchain c0f799aeda763fc507814da0dc46c2dde7ca9133
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bhillmann/rustacean
[INFO] finished tweaking git repo https://github.com/bhillmann/rustacean
[INFO] tweaked toml for git repo https://github.com/bhillmann/rustacean written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/bhillmann/rustacean already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded statrs v0.12.0
[INFO] [stderr]   Downloaded bio-types v0.7.0
[INFO] [stderr]   Downloaded bytecount v0.6.0
[INFO] [stderr]   Downloaded structopt v0.3.18
[INFO] [stderr]   Downloaded bio v0.32.0
[INFO] [stderr]   Downloaded snafu-derive v0.6.9
[INFO] [stderr]   Downloaded snafu v0.6.9
[INFO] [stderr]   Downloaded structopt-derive v0.4.11
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00636799dd706a7014e567cc2054e3ac8d7111dd58ba63019dbc86c1c2214f51
[INFO] running `Command { std: "docker" "start" "-a" "00636799dd706a7014e567cc2054e3ac8d7111dd58ba63019dbc86c1c2214f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00636799dd706a7014e567cc2054e3ac8d7111dd58ba63019dbc86c1c2214f51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00636799dd706a7014e567cc2054e3ac8d7111dd58ba63019dbc86c1c2214f51", kill_on_drop: false }`
[INFO] [stdout] 00636799dd706a7014e567cc2054e3ac8d7111dd58ba63019dbc86c1c2214f51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+c0f799aeda763fc507814da0dc46c2dde7ca9133" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51d4e42e6858a65c29a691867e7ae3323a5fe90cde31745685ea16a03b81d67b
[INFO] running `Command { std: "docker" "start" "-a" "51d4e42e6858a65c29a691867e7ae3323a5fe90cde31745685ea16a03b81d67b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.23
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]    Compiling serde_derive v1.0.116
[INFO] [stderr]    Compiling serde v1.0.116
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]    Compiling semver v0.1.20
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling rustc_version v0.1.7
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling bv v0.11.1
[INFO] [stderr]    Compiling newtype_derive v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]    Compiling ndarray v0.13.1
[INFO] [stderr]     Checking matrixmultiply v0.2.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking aho-corasick v0.7.13
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking array-macro v1.0.5
[INFO] [stderr]     Checking bit-vec v0.6.2
[INFO] [stderr]    Compiling bio v0.32.0
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking triple_accel v0.3.4
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]     Checking bytecount v0.6.0
[INFO] [stderr]     Checking strum v0.18.0
[INFO] [stderr]     Checking bit-set v0.5.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]     Checking itertools-num v0.1.3
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking statrs v0.12.0
[INFO] [stderr]     Checking guessing_game v0.1.0 (/opt/rustwide/workdir/guessing_game)
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]    Compiling enum-map-derive v0.4.3
[INFO] [stderr]    Compiling snafu-derive v0.6.9
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]    Compiling getset v0.0.9
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling structopt-derive v0.4.11
[INFO] [stderr]     Checking enum-map v0.6.3
[INFO] [stderr]     Checking snafu v0.6.9
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking multimap v0.8.2
[INFO] [stderr]     Checking bio-types v0.7.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]     Checking structopt v0.3.18
[INFO] [stderr]     Checking kmer v0.1.0 (/opt/rustwide/workdir/kmer)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> kmer/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut reader = BufReader::new(f?);
[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]   --> kmer/src/main.rs:24:9
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let mut reader = BufReader::new(f?);
[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: field `pattern` is never read
[INFO] [stdout]   --> kmer/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Cli {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 10 |     /// The pattern to look for
[INFO] [stdout] 11 |     pattern: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `pattern` is never read
[INFO] [stdout]   --> kmer/src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 9  | struct Cli {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] 10 |     /// The pattern to look for
[INFO] [stdout] 11 |     pattern: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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` profile [unoptimized + debuginfo] target(s) in 9.92s
[INFO] running `Command { std: "docker" "inspect" "51d4e42e6858a65c29a691867e7ae3323a5fe90cde31745685ea16a03b81d67b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51d4e42e6858a65c29a691867e7ae3323a5fe90cde31745685ea16a03b81d67b", kill_on_drop: false }`
[INFO] [stdout] 51d4e42e6858a65c29a691867e7ae3323a5fe90cde31745685ea16a03b81d67b