[INFO] fetching crate rusty-forest 0.1.2... [INFO] testing rusty-forest-0.1.2 against beta-2022-02-22 for beta-1.60-1 [INFO] extracting crate rusty-forest 0.1.2 into /workspace/builds/worker-41/source [INFO] validating manifest of crates.io crate rusty-forest 0.1.2 on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rusty-forest 0.1.2 [INFO] finished tweaking crates.io crate rusty-forest 0.1.2 [INFO] tweaked toml for crates.io crate rusty-forest 0.1.2 written to /workspace/builds/worker-41/source/Cargo.toml [INFO] crate crates.io crate rusty-forest 0.1.2 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded libc v0.2.96 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fc20eb189f676d68fc46eea49bfcf79e88b83f2a99a329675ddc1b186a9650b1 [INFO] running `Command { std: "docker" "start" "-a" "fc20eb189f676d68fc46eea49bfcf79e88b83f2a99a329675ddc1b186a9650b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fc20eb189f676d68fc46eea49bfcf79e88b83f2a99a329675ddc1b186a9650b1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fc20eb189f676d68fc46eea49bfcf79e88b83f2a99a329675ddc1b186a9650b1", kill_on_drop: false }` [INFO] [stdout] fc20eb189f676d68fc46eea49bfcf79e88b83f2a99a329675ddc1b186a9650b1 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 9d4b3f35027c857e051adc7fdfd4736df27fa1908a46c1733f7c47612301a45d [INFO] running `Command { std: "docker" "start" "-a" "9d4b3f35027c857e051adc7fdfd4736df27fa1908a46c1733f7c47612301a45d", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.96 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling numtoa v0.1.0 [INFO] [stderr] Compiling either v1.6.1 [INFO] [stderr] Compiling hex v0.4.3 [INFO] [stderr] Compiling getopts v0.2.21 [INFO] [stderr] Compiling itertools v0.10.1 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling aho-corasick v0.7.18 [INFO] [stderr] Compiling getrandom v0.2.3 [INFO] [stderr] Compiling time v0.1.43 [INFO] [stderr] Compiling termion v1.5.6 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling regex v1.5.4 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling rusty-forest v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 9.24s [INFO] running `Command { std: "docker" "inspect" "9d4b3f35027c857e051adc7fdfd4736df27fa1908a46c1733f7c47612301a45d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "9d4b3f35027c857e051adc7fdfd4736df27fa1908a46c1733f7c47612301a45d", kill_on_drop: false }` [INFO] [stdout] 9d4b3f35027c857e051adc7fdfd4736df27fa1908a46c1733f7c47612301a45d [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 08c55f6625d9c5bd5b335ef77f6c6409f0e3dcfb9bb279657398dab5a0329f59 [INFO] running `Command { std: "docker" "start" "-a" "08c55f6625d9c5bd5b335ef77f6c6409f0e3dcfb9bb279657398dab5a0329f59", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling rusty-forest v0.1.2 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:622:13 [INFO] [stdout] | [INFO] [stdout] 622 | t.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stdout] --> src/main.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | x.to_lowercase(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 2 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 3.92s [INFO] running `Command { std: "docker" "inspect" "08c55f6625d9c5bd5b335ef77f6c6409f0e3dcfb9bb279657398dab5a0329f59", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08c55f6625d9c5bd5b335ef77f6c6409f0e3dcfb9bb279657398dab5a0329f59", kill_on_drop: false }` [INFO] [stdout] 08c55f6625d9c5bd5b335ef77f6c6409f0e3dcfb9bb279657398dab5a0329f59 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-41/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] a35459a133d94c8da5376a0d96af675304cb6561aef98a26faaadb80f2392b6f [INFO] running `Command { std: "docker" "start" "-a" "a35459a133d94c8da5376a0d96af675304cb6561aef98a26faaadb80f2392b6f", kill_on_drop: false }` [INFO] [stderr] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stderr] --> src/main.rs:622:13 [INFO] [stderr] | [INFO] [stderr] 622 | t.to_lowercase(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stderr] [INFO] [stderr] warning: unused return value of `str::::to_lowercase` that must be used [INFO] [stderr] --> src/main.rs:688:13 [INFO] [stderr] | [INFO] [stderr] 688 | x.to_lowercase(); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this returns the lowercase string as a new String, without modifying the original [INFO] [stderr] [INFO] [stderr] warning: `rusty-forest` (bin "rusty-forest" test) generated 2 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rusty_forest-42077d3487d62ee2) [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "a35459a133d94c8da5376a0d96af675304cb6561aef98a26faaadb80f2392b6f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a35459a133d94c8da5376a0d96af675304cb6561aef98a26faaadb80f2392b6f", kill_on_drop: false }` [INFO] [stdout] a35459a133d94c8da5376a0d96af675304cb6561aef98a26faaadb80f2392b6f