[INFO] cloning repository https://github.com/FauxFaux/rotaters
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/FauxFaux/rotaters" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frotaters", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frotaters'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ecadcc27507ef3c0170c0b061ccd8fa1959dd77c
[INFO] checking FauxFaux/rotaters against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFauxFaux%2Frotaters" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/FauxFaux/rotaters on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/FauxFaux/rotaters
[INFO] finished tweaking git repo https://github.com/FauxFaux/rotaters
[INFO] tweaked toml for git repo https://github.com/FauxFaux/rotaters written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/FauxFaux/rotaters already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a58ebfb8633c60ef96c67fd000eda4bbaf26826890eff0723be73338ef53b72b
[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" "a58ebfb8633c60ef96c67fd000eda4bbaf26826890eff0723be73338ef53b72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a58ebfb8633c60ef96c67fd000eda4bbaf26826890eff0723be73338ef53b72b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a58ebfb8633c60ef96c67fd000eda4bbaf26826890eff0723be73338ef53b72b", kill_on_drop: false }`
[INFO] [stdout] a58ebfb8633c60ef96c67fd000eda4bbaf26826890eff0723be73338ef53b72b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] f54df754bee54c0dab6786b7dcae716cf704b4300b69ea927feb9fe005e3fb3e
[INFO] running `Command { std: "docker" "start" "-a" "f54df754bee54c0dab6786b7dcae716cf704b4300b69ea927feb9fe005e3fb3e", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]    Compiling cc v1.0.18
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking rustc-demangle v0.1.9
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking cfg-if v0.1.4
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]     Checking chrono v0.4.4
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking chan v0.1.21
[INFO] [stderr]     Checking chan-signal v0.3.1
[INFO] [stderr]     Checking backtrace v0.3.9
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking rotaters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.61s
[INFO] running `Command { std: "docker" "inspect" "f54df754bee54c0dab6786b7dcae716cf704b4300b69ea927feb9fe005e3fb3e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f54df754bee54c0dab6786b7dcae716cf704b4300b69ea927feb9fe005e3fb3e", kill_on_drop: false }`
[INFO] [stdout] f54df754bee54c0dab6786b7dcae716cf704b4300b69ea927feb9fe005e3fb3e