[INFO] fetching crate fuzzcheck_mutators 0.4.1... [INFO] checking fuzzcheck_mutators-0.4.1 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526 [INFO] extracting crate fuzzcheck_mutators 0.4.1 into /workspace/builds/worker-12/source [INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.4.1 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 crates.io crate fuzzcheck_mutators 0.4.1 [INFO] finished tweaking crates.io crate fuzzcheck_mutators 0.4.1 [INFO] tweaked toml for crates.io crate fuzzcheck_mutators 0.4.1 written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate crates.io crate fuzzcheck_mutators 0.4.1 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] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded fuzzcheck_mutators_derive v0.4.0 [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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6ce44e73f3bd793d5ee5301fe7fe9010988259cae5d1c4faa0c1827070d54746 [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" "6ce44e73f3bd793d5ee5301fe7fe9010988259cae5d1c4faa0c1827070d54746", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6ce44e73f3bd793d5ee5301fe7fe9010988259cae5d1c4faa0c1827070d54746", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ce44e73f3bd793d5ee5301fe7fe9010988259cae5d1c4faa0c1827070d54746", kill_on_drop: false }` [INFO] [stdout] 6ce44e73f3bd793d5ee5301fe7fe9010988259cae5d1c4faa0c1827070d54746 [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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 50142e0d8e0413914ed5375c4db21af0f87a703a08ddf9e60831c1c100059313 [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" "50142e0d8e0413914ed5375c4db21af0f87a703a08ddf9e60831c1c100059313", kill_on_drop: false }` [INFO] [stderr] Checking fuzzcheck_traits v0.4.0 [INFO] [stderr] Compiling fuzzcheck_mutators_derive v0.4.0 [INFO] [stderr] Checking fuzzcheck_mutators v0.4.1 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `fuzzcheck_mutators::fuzzcheck_derive_mutator` [INFO] [stdout] --> examples/vector_u8.rs:6:5 [INFO] [stdout] | [INFO] [stdout] 6 | use fuzzcheck_mutators::fuzzcheck_derive_mutator; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `i` [INFO] [stdout] --> examples/derive_struct.rs:41:9 [INFO] [stdout] | [INFO] [stdout] 41 | for i in 0..10 { [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_i` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` 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 4.28s [INFO] running `Command { std: "docker" "inspect" "50142e0d8e0413914ed5375c4db21af0f87a703a08ddf9e60831c1c100059313", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "50142e0d8e0413914ed5375c4db21af0f87a703a08ddf9e60831c1c100059313", kill_on_drop: false }` [INFO] [stdout] 50142e0d8e0413914ed5375c4db21af0f87a703a08ddf9e60831c1c100059313