[INFO] fetching crate kern 1.2.0...
[INFO] checking kern-1.2.0 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate kern 1.2.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate kern 1.2.0 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kern 1.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate kern 1.2.0
[INFO] tweaked toml for crates.io crate kern 1.2.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate kern 1.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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 webpki v0.21.3
[INFO] [stderr]   Downloaded rustls v0.18.1
[INFO] [stderr]   Downloaded ring v0.16.15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07b1a594bca19c6fadf399ddd8a7a25cecee31392f856f98ada8518ecd14f281
[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" "07b1a594bca19c6fadf399ddd8a7a25cecee31392f856f98ada8518ecd14f281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07b1a594bca19c6fadf399ddd8a7a25cecee31392f856f98ada8518ecd14f281", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07b1a594bca19c6fadf399ddd8a7a25cecee31392f856f98ada8518ecd14f281", kill_on_drop: false }`
[INFO] [stdout] 07b1a594bca19c6fadf399ddd8a7a25cecee31392f856f98ada8518ecd14f281
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f87415324b42fc831de4ad59d1b3e7c5462fc0ffd7e5f869a95700291bc3e5a8
[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" "f87415324b42fc831de4ad59d1b3e7c5462fc0ffd7e5f869a95700291bc3e5a8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking kern v1.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "f87415324b42fc831de4ad59d1b3e7c5462fc0ffd7e5f869a95700291bc3e5a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f87415324b42fc831de4ad59d1b3e7c5462fc0ffd7e5f869a95700291bc3e5a8", kill_on_drop: false }`
[INFO] [stdout] f87415324b42fc831de4ad59d1b3e7c5462fc0ffd7e5f869a95700291bc3e5a8