[INFO] cloning repository https://github.com/umut-sahin/rust-examples
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/umut-sahin/rust-examples" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumut-sahin%2Frust-examples", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumut-sahin%2Frust-examples'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a4b5f1986c06f4e327edfb94d10f1ea47cb0143c
[INFO] checking umut-sahin/rust-examples against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fumut-sahin%2Frust-examples" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/umut-sahin/rust-examples on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/umut-sahin/rust-examples
[INFO] finished tweaking git repo https://github.com/umut-sahin/rust-examples
[INFO] tweaked toml for git repo https://github.com/umut-sahin/rust-examples written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/umut-sahin/rust-examples already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 240db3b3d3b0ec91c5a35ceaf793a039481e0e38c56c3c837e3aa5f6e7141ee8
[INFO] running `Command { std: "docker" "start" "-a" "240db3b3d3b0ec91c5a35ceaf793a039481e0e38c56c3c837e3aa5f6e7141ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "240db3b3d3b0ec91c5a35ceaf793a039481e0e38c56c3c837e3aa5f6e7141ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "240db3b3d3b0ec91c5a35ceaf793a039481e0e38c56c3c837e3aa5f6e7141ee8", kill_on_drop: false }`
[INFO] [stdout] 240db3b3d3b0ec91c5a35ceaf793a039481e0e38c56c3c837e3aa5f6e7141ee8
[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" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] efda27f11fade1bd6f6ec7977d357e4611d56d69824f9ca5d9c31b0ca064f8ad
[INFO] running `Command { std: "docker" "start" "-a" "efda27f11fade1bd6f6ec7977d357e4611d56d69824f9ca5d9c31b0ca064f8ad", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]     Checking rgb v0.8.13
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking threads v1.0.0 (/opt/rustwide/workdir/threads)
[INFO] [stderr]     Checking write-to-console v1.0.0 (/opt/rustwide/workdir/write-to-console)
[INFO] [stderr]     Checking parking-threads v1.0.0 (/opt/rustwide/workdir/parking-threads)
[INFO] [stderr]     Checking operator-overloading v1.0.0 (/opt/rustwide/workdir/operator-overloading)
[INFO] [stderr]     Checking read-from-console v1.0.0 (/opt/rustwide/workdir/read-from-console)
[INFO] [stderr]     Checking command-line-arguments v1.0.0 (/opt/rustwide/workdir/command-line-arguments)
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking atty v0.2.12
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking memory-mapped-io v1.0.0 (/opt/rustwide/workdir/memory-mapped-io)
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking winconsole v0.10.0
[INFO] [stderr]     Checking colored v1.8.0
[INFO] [stderr]     Checking brainfuck-interpreter v1.0.0 (/opt/rustwide/workdir/brainfuck-interpreter)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 14.07s
[INFO] running `Command { std: "docker" "inspect" "efda27f11fade1bd6f6ec7977d357e4611d56d69824f9ca5d9c31b0ca064f8ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efda27f11fade1bd6f6ec7977d357e4611d56d69824f9ca5d9c31b0ca064f8ad", kill_on_drop: false }`
[INFO] [stdout] efda27f11fade1bd6f6ec7977d357e4611d56d69824f9ca5d9c31b0ca064f8ad