[INFO] fetching crate maybe-std 0.1.2...
[INFO] checking maybe-std-0.1.2 against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] extracting crate maybe-std 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate maybe-std 0.1.2 on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate maybe-std 0.1.2
[INFO] finished tweaking crates.io crate maybe-std 0.1.2
[INFO] tweaked toml for crates.io crate maybe-std 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b3bec9fb1dc3ac53118eb290563280e0858f7ee48160c661cb237deaba312c3a
[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" "b3bec9fb1dc3ac53118eb290563280e0858f7ee48160c661cb237deaba312c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b3bec9fb1dc3ac53118eb290563280e0858f7ee48160c661cb237deaba312c3a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b3bec9fb1dc3ac53118eb290563280e0858f7ee48160c661cb237deaba312c3a", kill_on_drop: false }`
[INFO] [stdout] b3bec9fb1dc3ac53118eb290563280e0858f7ee48160c661cb237deaba312c3a
[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" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c7a0abf45b92e00e74df61b10735cd164fd5eed2734acdfc48bebf7bf2844c61
[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" "c7a0abf45b92e00e74df61b10735cd164fd5eed2734acdfc48bebf7bf2844c61", kill_on_drop: false }`
[INFO] [stderr]     Checking maybe-std v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "c7a0abf45b92e00e74df61b10735cd164fd5eed2734acdfc48bebf7bf2844c61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7a0abf45b92e00e74df61b10735cd164fd5eed2734acdfc48bebf7bf2844c61", kill_on_drop: false }`
[INFO] [stdout] c7a0abf45b92e00e74df61b10735cd164fd5eed2734acdfc48bebf7bf2844c61