[INFO] fetching crate rusty-forest 0.1.2... [INFO] testing rusty-forest-0.1.2 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] extracting crate rusty-forest 0.1.2 into /workspace/builds/worker-35/source [INFO] validating manifest of crates.io crate rusty-forest 0.1.2 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-35/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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 aho-corasick v0.7.18 [INFO] [stderr] Downloaded either v1.6.1 [INFO] [stderr] Downloaded ppv-lite86 v0.2.10 [INFO] [stderr] Downloaded regex v1.5.4 [INFO] [stderr] Downloaded hex v0.4.3 [INFO] [stderr] Downloaded autocfg v1.0.1 [INFO] [stderr] Downloaded chrono v0.4.19 [INFO] [stderr] Downloaded itertools v0.10.1 [INFO] [stderr] Downloaded num-integer v0.1.44 [INFO] [stderr] Downloaded unicode-width v0.1.8 [INFO] [stderr] Downloaded libc v0.2.96 [INFO] [stderr] Downloaded memchr v2.4.0 [INFO] [stderr] Downloaded numtoa v0.1.0 [INFO] [stderr] Downloaded redox_syscall v0.2.8 [INFO] [stderr] Downloaded num-traits v0.2.14 [INFO] [stderr] Downloaded regex-syntax v0.6.25 [INFO] [stderr] Downloaded termion v1.5.6 [INFO] [stderr] Downloaded redox_termios v0.1.2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 8b931e1652e9049463972e9de60975b3732c4149abec88f70011b9335b89f537 [INFO] running `Command { std: "docker" "start" "-a" "8b931e1652e9049463972e9de60975b3732c4149abec88f70011b9335b89f537", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "8b931e1652e9049463972e9de60975b3732c4149abec88f70011b9335b89f537", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8b931e1652e9049463972e9de60975b3732c4149abec88f70011b9335b89f537", kill_on_drop: false }` [INFO] [stdout] 8b931e1652e9049463972e9de60975b3732c4149abec88f70011b9335b89f537 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 917a4d53bbf7f396f416a8fc7187f99f694f25d67b72758065629a81a4118929 [INFO] running `Command { std: "docker" "start" "-a" "917a4d53bbf7f396f416a8fc7187f99f694f25d67b72758065629a81a4118929", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Compiling libc v0.2.96 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling cfg-if v1.0.0 [INFO] [stderr] Compiling memchr v2.4.0 [INFO] [stderr] Compiling ppv-lite86 v0.2.10 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling regex-syntax v0.6.25 [INFO] [stderr] Compiling numtoa v0.1.0 [INFO] [stderr] Compiling getopts v0.2.21 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [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 aho-corasick v0.7.18 [INFO] [stderr] Compiling chrono v0.4.19 [INFO] [stderr] Compiling regex v1.5.4 [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 33.48s [INFO] running `Command { std: "docker" "inspect" "917a4d53bbf7f396f416a8fc7187f99f694f25d67b72758065629a81a4118929", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "917a4d53bbf7f396f416a8fc7187f99f694f25d67b72758065629a81a4118929", kill_on_drop: false }` [INFO] [stdout] 917a4d53bbf7f396f416a8fc7187f99f694f25d67b72758065629a81a4118929 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6df4695135ec0636533eef092ce3e84a8ca77c9e9e724c2fa8e477474328473b [INFO] running `Command { std: "docker" "start" "-a" "6df4695135ec0636533eef092ce3e84a8ca77c9e9e724c2fa8e477474328473b", kill_on_drop: false }` [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 0.87s [INFO] running `Command { std: "docker" "inspect" "6df4695135ec0636533eef092ce3e84a8ca77c9e9e724c2fa8e477474328473b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6df4695135ec0636533eef092ce3e84a8ca77c9e9e724c2fa8e477474328473b", kill_on_drop: false }` [INFO] [stdout] 6df4695135ec0636533eef092ce3e84a8ca77c9e9e724c2fa8e477474328473b [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-35/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] ee9ee6ccaa55d48b9728f263455501556f7bf8634110499b18ac2e1f436cc3f1 [INFO] running `Command { std: "docker" "start" "-a" "ee9ee6ccaa55d48b9728f263455501556f7bf8634110499b18ac2e1f436cc3f1", 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 0.11s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/rusty_forest-8a7d18cd4547a13d) [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" "ee9ee6ccaa55d48b9728f263455501556f7bf8634110499b18ac2e1f436cc3f1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ee9ee6ccaa55d48b9728f263455501556f7bf8634110499b18ac2e1f436cc3f1", kill_on_drop: false }` [INFO] [stdout] ee9ee6ccaa55d48b9728f263455501556f7bf8634110499b18ac2e1f436cc3f1