[INFO] fetching crate polynomial-ring 0.2.1...
[INFO] checking polynomial-ring-0.2.1 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate polynomial-ring 0.2.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate polynomial-ring 0.2.1 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate polynomial-ring 0.2.1
[INFO] finished tweaking crates.io crate polynomial-ring 0.2.1
[INFO] tweaked toml for crates.io crate polynomial-ring 0.2.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded auto_ops v0.3.0
[INFO] [stderr]   Downloaded ring-algorithm v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e872abc7a503a2eb61aee9fe7f6681b89b7f64e6373542e648b7d331155595e8
[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" "e872abc7a503a2eb61aee9fe7f6681b89b7f64e6373542e648b7d331155595e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e872abc7a503a2eb61aee9fe7f6681b89b7f64e6373542e648b7d331155595e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e872abc7a503a2eb61aee9fe7f6681b89b7f64e6373542e648b7d331155595e8", kill_on_drop: false }`
[INFO] [stdout] e872abc7a503a2eb61aee9fe7f6681b89b7f64e6373542e648b7d331155595e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] 9b2a0eaf6a843103f5d6800cc345f55f0442a03621847bebcbd6a474d8988176
[INFO] running `Command { std: "docker" "start" "-a" "9b2a0eaf6a843103f5d6800cc345f55f0442a03621847bebcbd6a474d8988176", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking auto_ops v0.3.0
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]     Checking num-complex v0.4.0
[INFO] [stderr]     Checking ring-algorithm v0.2.3
[INFO] [stderr]     Checking polynomial-ring v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.31s
[INFO] running `Command { std: "docker" "inspect" "9b2a0eaf6a843103f5d6800cc345f55f0442a03621847bebcbd6a474d8988176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b2a0eaf6a843103f5d6800cc345f55f0442a03621847bebcbd6a474d8988176", kill_on_drop: false }`
[INFO] [stdout] 9b2a0eaf6a843103f5d6800cc345f55f0442a03621847bebcbd6a474d8988176