[INFO] fetching crate duct 0.13.5...
[INFO] checking duct-0.13.5 against master#a836d9b6413d9d593be6c09463ff8c4c70e56599 for pr-84037
[INFO] extracting crate duct 0.13.5 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate duct 0.13.5 on toolchain a836d9b6413d9d593be6c09463ff8c4c70e56599
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate duct 0.13.5
[INFO] finished tweaking crates.io crate duct 0.13.5
[INFO] tweaked toml for crates.io crate duct 0.13.5 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate duct 0.13.5 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "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] 271812df926c603bb177eec047bd2d76425b7237d19ec3797479970df21704e8
[INFO] running `Command { std: "docker" "start" "-a" "271812df926c603bb177eec047bd2d76425b7237d19ec3797479970df21704e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "271812df926c603bb177eec047bd2d76425b7237d19ec3797479970df21704e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "271812df926c603bb177eec047bd2d76425b7237d19ec3797479970df21704e8", kill_on_drop: false }`
[INFO] [stdout] 271812df926c603bb177eec047bd2d76425b7237d19ec3797479970df21704e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+a836d9b6413d9d593be6c09463ff8c4c70e56599" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 293113563cc1f5b636d49ca3695e754525db835e8c1156862445578c42714be2
[INFO] running `Command { std: "docker" "start" "-a" "293113563cc1f5b636d49ca3695e754525db835e8c1156862445578c42714be2", kill_on_drop: false }`
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]     Checking shared_child v0.3.4
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking duct v0.13.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.46s
[INFO] running `Command { std: "docker" "inspect" "293113563cc1f5b636d49ca3695e754525db835e8c1156862445578c42714be2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "293113563cc1f5b636d49ca3695e754525db835e8c1156862445578c42714be2", kill_on_drop: false }`
[INFO] [stdout] 293113563cc1f5b636d49ca3695e754525db835e8c1156862445578c42714be2