[INFO] fetching crate fuzzy-tree 0.1.2...
[INFO] checking fuzzy-tree-0.1.2 against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035
[INFO] extracting crate fuzzy-tree 0.1.2 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate fuzzy-tree 0.1.2 on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzy-tree 0.1.2
[INFO] finished tweaking crates.io crate fuzzy-tree 0.1.2
[INFO] tweaked toml for crates.io crate fuzzy-tree 0.1.2 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate fuzzy-tree 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f2cceeeff5585eede0ae3e68d7374b34b1d7eedf9a2dfad1b638538387a44d5
[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" "7f2cceeeff5585eede0ae3e68d7374b34b1d7eedf9a2dfad1b638538387a44d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f2cceeeff5585eede0ae3e68d7374b34b1d7eedf9a2dfad1b638538387a44d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f2cceeeff5585eede0ae3e68d7374b34b1d7eedf9a2dfad1b638538387a44d5", kill_on_drop: false }`
[INFO] [stdout] 7f2cceeeff5585eede0ae3e68d7374b34b1d7eedf9a2dfad1b638538387a44d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "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] 5896e100d2c04bd28adaf5429b4c5cdabbfa4f6914ca6a6c099d52ac96f82048
[INFO] running `Command { std: "docker" "start" "-a" "5896e100d2c04bd28adaf5429b4c5cdabbfa4f6914ca6a6c099d52ac96f82048", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]    Compiling backtrace-sys v0.1.36
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking termion v1.5.5
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking backtrace v0.3.46
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking which v3.1.1
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking fuzzy-tree v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/tree.rs:525:7
[INFO] [stdout]     |
[INFO] [stdout] 525 |         let mut paths = create_test_paths();
[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 [unoptimized + debuginfo] target(s) in 14.72s
[INFO] running `Command { std: "docker" "inspect" "5896e100d2c04bd28adaf5429b4c5cdabbfa4f6914ca6a6c099d52ac96f82048", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5896e100d2c04bd28adaf5429b4c5cdabbfa4f6914ca6a6c099d52ac96f82048", kill_on_drop: false }`
[INFO] [stdout] 5896e100d2c04bd28adaf5429b4c5cdabbfa4f6914ca6a6c099d52ac96f82048