[INFO] fetching crate rainbowcat 0.1.0...
[INFO] checking rainbowcat-0.1.0 against try#82acd1d76add2232e19c1f0feb250d2a19ec6efe for pr-81213
[INFO] extracting crate rainbowcat 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rainbowcat 0.1.0 on toolchain 82acd1d76add2232e19c1f0feb250d2a19ec6efe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rainbowcat 0.1.0
[INFO] finished tweaking crates.io crate rainbowcat 0.1.0
[INFO] tweaked toml for crates.io crate rainbowcat 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded phf_generator v0.7.24
[INFO] [stderr]   Downloaded approx v0.1.1
[INFO] [stderr]   Downloaded palette_derive v0.4.1
[INFO] [stderr]   Downloaded phf v0.7.24
[INFO] [stderr]   Downloaded palette v0.4.1
[INFO] [stderr]   Downloaded phf_codegen v0.7.24
[INFO] [stderr]   Downloaded siphasher v0.2.3
[INFO] [stderr]   Downloaded syn v0.14.9
[INFO] [stderr]   Downloaded phf_shared v0.7.24
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 896e283c0be1bb7b5f87c6d86549f6e03ee638601053225ee28ffe608dbed324
[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" "896e283c0be1bb7b5f87c6d86549f6e03ee638601053225ee28ffe608dbed324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "896e283c0be1bb7b5f87c6d86549f6e03ee638601053225ee28ffe608dbed324", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "896e283c0be1bb7b5f87c6d86549f6e03ee638601053225ee28ffe608dbed324", kill_on_drop: false }`
[INFO] [stdout] 896e283c0be1bb7b5f87c6d86549f6e03ee638601053225ee28ffe608dbed324
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+82acd1d76add2232e19c1f0feb250d2a19ec6efe" "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] 1a8bbd1c0384eca4daff6a93b5f612702f58d3034bebbd70d634c988d0be7a9a
[INFO] running `Command { std: "docker" "start" "-a" "1a8bbd1c0384eca4daff6a93b5f612702f58d3034bebbd70d634c988d0be7a9a", kill_on_drop: false }`
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v1.0.59
[INFO] [stderr]     Checking object v0.23.0
[INFO] [stderr]     Checking approx v0.1.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling miniz_oxide v0.4.3
[INFO] [stderr]    Compiling libc v0.2.82
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling rand_jitter v0.1.4
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling palette v0.4.1
[INFO] [stderr]     Checking backtrace v0.3.56
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling palette_derive v0.4.1
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking rainbowcat v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.35s
[INFO] running `Command { std: "docker" "inspect" "1a8bbd1c0384eca4daff6a93b5f612702f58d3034bebbd70d634c988d0be7a9a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a8bbd1c0384eca4daff6a93b5f612702f58d3034bebbd70d634c988d0be7a9a", kill_on_drop: false }`
[INFO] [stdout] 1a8bbd1c0384eca4daff6a93b5f612702f58d3034bebbd70d634c988d0be7a9a