[INFO] cloning repository https://github.com/bachhh/rustub
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bachhh/rustub" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbachhh%2Frustub", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbachhh%2Frustub'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0e175e3f8c55f868cc525d1be97b86b3d8e47b33
[INFO] checking bachhh/rustub/0e175e3f8c55f868cc525d1be97b86b3d8e47b33 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbachhh%2Frustub" "/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/bachhh/rustub on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bachhh/rustub
[INFO] finished tweaking git repo https://github.com/bachhh/rustub
[INFO] tweaked toml for git repo https://github.com/bachhh/rustub written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/bachhh/rustub 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded plotters-svg v0.3.2
[INFO] [stderr]   Downloaded plotters v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] feb672b1627f9fcdb211beeca3fc4f2f723bd968074ddba696e1f936f2c90c04
[INFO] running `Command { std: "docker" "start" "-a" "feb672b1627f9fcdb211beeca3fc4f2f723bd968074ddba696e1f936f2c90c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "feb672b1627f9fcdb211beeca3fc4f2f723bd968074ddba696e1f936f2c90c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "feb672b1627f9fcdb211beeca3fc4f2f723bd968074ddba696e1f936f2c90c04", kill_on_drop: false }`
[INFO] [stdout] feb672b1627f9fcdb211beeca3fc4f2f723bd968074ddba696e1f936f2c90c04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ac8af32242ad5ff90413db12ef84fa1a0ba926d9deeae3f5d160a2b0862436c
[INFO] running `Command { std: "docker" "start" "-a" "3ac8af32242ad5ff90413db12ef84fa1a0ba926d9deeae3f5d160a2b0862436c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling crossbeam-utils v0.8.11
[INFO] [stderr]    Compiling serde v1.0.142
[INFO] [stderr]     Checking once_cell v1.13.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.10
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling serde_json v1.0.83
[INFO] [stderr]    Compiling syn v1.0.99
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr]     Checking either v1.7.0
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]     Checking itoa v1.0.3
[INFO] [stderr]     Checking plotters-backend v0.3.4
[INFO] [stderr]    Compiling serde_derive v1.0.142
[INFO] [stderr]     Checking itertools v0.10.3
[INFO] [stderr]     Checking cast v0.3.0
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking plotters-svg v0.3.2
[INFO] [stderr]     Checking crossbeam-channel v0.5.6
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking crossbeam-deque v0.8.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking plotters v0.3.2
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]     Checking criterion-plot v0.4.5
[INFO] [stderr]     Checking bstr v0.2.17
[INFO] [stderr]     Checking serde_cbor v0.11.2
[INFO] [stderr]     Checking csv v1.1.6
[INFO] [stderr]     Checking tinytemplate v1.2.1
[INFO] [stderr]     Checking criterion v0.3.6
[INFO] [stderr]     Checking rustub v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/utils.rs:166:13
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let mut test_case: Vec<u32> = (0..10000).collect();
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.47s
[INFO] running `Command { std: "docker" "inspect" "3ac8af32242ad5ff90413db12ef84fa1a0ba926d9deeae3f5d160a2b0862436c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ac8af32242ad5ff90413db12ef84fa1a0ba926d9deeae3f5d160a2b0862436c", kill_on_drop: false }`
[INFO] [stdout] 3ac8af32242ad5ff90413db12ef84fa1a0ba926d9deeae3f5d160a2b0862436c