[INFO] cloning repository https://github.com/rainbowbismuth/gbcc [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rainbowbismuth/gbcc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] a6576032bc5920ebc58bc2642b318bcc893b8959 [INFO] checking rainbowbismuth/gbcc against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frainbowbismuth%2Fgbcc" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/rainbowbismuth/gbcc on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/rainbowbismuth/gbcc [INFO] finished tweaking git repo https://github.com/rainbowbismuth/gbcc [INFO] tweaked toml for git repo https://github.com/rainbowbismuth/gbcc written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/rainbowbismuth/gbcc already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 67f154c9f6507339362e74e2301e0c72a93b8cf196762f39199209ad883ab010 [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" "67f154c9f6507339362e74e2301e0c72a93b8cf196762f39199209ad883ab010", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "67f154c9f6507339362e74e2301e0c72a93b8cf196762f39199209ad883ab010", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67f154c9f6507339362e74e2301e0c72a93b8cf196762f39199209ad883ab010", kill_on_drop: false }` [INFO] [stdout] 67f154c9f6507339362e74e2301e0c72a93b8cf196762f39199209ad883ab010 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c4bd04bbe4aaac6dad38e8d5dd91776c02ee5043895cdabd4f0decc99477765a [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" "c4bd04bbe4aaac6dad38e8d5dd91776c02ee5043895cdabd4f0decc99477765a", kill_on_drop: false }` [INFO] [stderr] Checking fnv v1.0.6 [INFO] [stderr] Checking gbcc v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `fnv::FnvHashSet` [INFO] [stdout] --> src/dataflow/dominator.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use fnv::FnvHashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `fnv::FnvHashSet` [INFO] [stdout] --> src/dataflow/dominator.rs:1:5 [INFO] [stdout] | [INFO] [stdout] 1 | use fnv::FnvHashSet; [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `label` [INFO] [stdout] --> src/dataflow/dominator.rs:17:38 [INFO] [stdout] | [INFO] [stdout] 17 | fn join(&mut self, other: &Self, label: Label) -> bool { [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_label` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `label` [INFO] [stdout] --> src/dataflow/dominator.rs:44:9 [INFO] [stdout] | [INFO] [stdout] 44 | label: Label, [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_label` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `label` [INFO] [stdout] --> src/dataflow/graph.rs:94:39 [INFO] [stdout] | [INFO] [stdout] 94 | pub fn direct_predecessors(&self, label: Label) -> Vec