[INFO] cloning repository https://github.com/signalnerve/f [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/signalnerve/f" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignalnerve%2Ff", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignalnerve%2Ff'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a3474203a4c43269dc83304aabeb447e2903938e [INFO] checking signalnerve/f against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsignalnerve%2Ff" "/workspace/builds/worker-12/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/signalnerve/f on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/signalnerve/f [INFO] finished tweaking git repo https://github.com/signalnerve/f [INFO] tweaked toml for git repo https://github.com/signalnerve/f written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/signalnerve/f already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] aa433865ab197061ebe9e5d470b132dd244e36b783c6d63f1571213dd8021e0a [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" "aa433865ab197061ebe9e5d470b132dd244e36b783c6d63f1571213dd8021e0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "aa433865ab197061ebe9e5d470b132dd244e36b783c6d63f1571213dd8021e0a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aa433865ab197061ebe9e5d470b132dd244e36b783c6d63f1571213dd8021e0a", kill_on_drop: false }` [INFO] [stdout] aa433865ab197061ebe9e5d470b132dd244e36b783c6d63f1571213dd8021e0a [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "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] fbd6f98c965f587a1826564e51d417ac2d232844dd60be95ef90a9a7b55ef0ab [INFO] running `Command { std: "docker" "start" "-a" "fbd6f98c965f587a1826564e51d417ac2d232844dd60be95ef90a9a7b55ef0ab", kill_on_drop: false }` [INFO] [stderr] Checking unicode-width v0.1.5 [INFO] [stderr] Compiling failure_derive v0.1.5 [INFO] [stderr] Compiling unicode-segmentation v1.3.0 [INFO] [stderr] Checking vec_map v0.8.1 [INFO] [stderr] Checking cfg-if v0.1.9 [INFO] [stderr] Checking sublime_fuzzy v0.6.0 [INFO] [stderr] Checking backtrace-sys v0.1.31 [INFO] [stderr] Compiling syn v0.15.42 [INFO] [stderr] Checking backtrace v0.3.34 [INFO] [stderr] Checking textwrap v0.11.0 [INFO] [stderr] Checking clap v2.33.0 [INFO] [stderr] Compiling heck v0.3.1 [INFO] [stderr] Compiling synstructure v0.10.2 [INFO] [stderr] Compiling serde_derive v1.0.98 [INFO] [stderr] Compiling structopt-derive v0.2.18 [INFO] [stderr] Checking failure v0.1.5 [INFO] [stderr] Checking structopt v0.2.18 [INFO] [stderr] Checking serde v1.0.98 [INFO] [stderr] Checking serde_json v1.0.40 [INFO] [stderr] Checking f v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/add.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | store::write_item(path); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `std::result::Result` that must be used [INFO] [stdout] --> src/add.rs:5:3 [INFO] [stdout] | [INFO] [stdout] 5 | store::write_item(path); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 35.09s [INFO] running `Command { std: "docker" "inspect" "fbd6f98c965f587a1826564e51d417ac2d232844dd60be95ef90a9a7b55ef0ab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbd6f98c965f587a1826564e51d417ac2d232844dd60be95ef90a9a7b55ef0ab", kill_on_drop: false }` [INFO] [stdout] fbd6f98c965f587a1826564e51d417ac2d232844dd60be95ef90a9a7b55ef0ab