[INFO] fetching crate fuzzcheck_mutators 0.2.1...
[INFO] documenting fuzzcheck_mutators-0.2.1 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate fuzzcheck_mutators 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fuzzcheck_mutators 0.2.1 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fuzzcheck_mutators 0.2.1
[INFO] finished tweaking crates.io crate fuzzcheck_mutators 0.2.1
[INFO] tweaked toml for crates.io crate fuzzcheck_mutators 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate fuzzcheck_mutators 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", 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] 3dde9d65405e47764dbaaf1a7869e93f41a3f7fcfd159888ee5a105f297a1919
[INFO] running `Command { std: "docker" "start" "-a" "3dde9d65405e47764dbaaf1a7869e93f41a3f7fcfd159888ee5a105f297a1919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3dde9d65405e47764dbaaf1a7869e93f41a3f7fcfd159888ee5a105f297a1919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dde9d65405e47764dbaaf1a7869e93f41a3f7fcfd159888ee5a105f297a1919", kill_on_drop: false }`
[INFO] [stdout] 3dde9d65405e47764dbaaf1a7869e93f41a3f7fcfd159888ee5a105f297a1919
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16947e73a9eaaa2ac175dd4adb5d33f1db7b913991273e4a9b88e9087a5cfd1d
[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" "16947e73a9eaaa2ac175dd4adb5d33f1db7b913991273e4a9b88e9087a5cfd1d", kill_on_drop: false }`
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.8
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking fuzzcheck_arg_parser v0.2.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking fuzzcheck v0.2.1
[INFO] [stderr]  Documenting fuzzcheck_mutators v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.14s
[INFO] running `Command { std: "docker" "inspect" "16947e73a9eaaa2ac175dd4adb5d33f1db7b913991273e4a9b88e9087a5cfd1d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16947e73a9eaaa2ac175dd4adb5d33f1db7b913991273e4a9b88e9087a5cfd1d", kill_on_drop: false }`
[INFO] [stdout] 16947e73a9eaaa2ac175dd4adb5d33f1db7b913991273e4a9b88e9087a5cfd1d