[INFO] fetching crate fern 0.6.0...
[INFO] checking fern-0.6.0 against try#81275a1445c7502a974118e0c69b795ab60be991 for pr-80243
[INFO] extracting crate fern 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fern 0.6.0 on toolchain 81275a1445c7502a974118e0c69b795ab60be991
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fern 0.6.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate fern 0.6.0
[INFO] tweaked toml for crates.io crate fern 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate fern 0.6.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ef777bfe2a02096621341324d68a7bd9989f3fa230d811fad2da765f612db896
[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" "ef777bfe2a02096621341324d68a7bd9989f3fa230d811fad2da765f612db896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ef777bfe2a02096621341324d68a7bd9989f3fa230d811fad2da765f612db896", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef777bfe2a02096621341324d68a7bd9989f3fa230d811fad2da765f612db896", kill_on_drop: false }`
[INFO] [stdout] ef777bfe2a02096621341324d68a7bd9989f3fa230d811fad2da765f612db896
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+81275a1445c7502a974118e0c69b795ab60be991" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67b6cbf73104a6eaace6a431b96a354c38d4e493b2e6f7ee1e0dfe3b2c0b8adb
[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" "67b6cbf73104a6eaace6a431b96a354c38d4e493b2e6f7ee1e0dfe3b2c0b8adb", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking fern v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.61s
[INFO] running `Command { std: "docker" "inspect" "67b6cbf73104a6eaace6a431b96a354c38d4e493b2e6f7ee1e0dfe3b2c0b8adb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67b6cbf73104a6eaace6a431b96a354c38d4e493b2e6f7ee1e0dfe3b2c0b8adb", kill_on_drop: false }`
[INFO] [stdout] 67b6cbf73104a6eaace6a431b96a354c38d4e493b2e6f7ee1e0dfe3b2c0b8adb