[INFO] fetching crate gym-core 0.1.0...
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] crate gym-core 0.1.0 is already in cache
[INFO] checking gym-core-0.1.0 against master#7308c22c6a8d77e82187e290e1f7459870e48d12 for pr-99447
[INFO] extracting crate gym-core 0.1.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate gym-core 0.1.0 on toolchain 7308c22c6a8d77e82187e290e1f7459870e48d12
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gym-core 0.1.0
[INFO] finished tweaking crates.io crate gym-core 0.1.0
[INFO] tweaked toml for crates.io crate gym-core 0.1.0 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "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] 62601b068780f6081cfcdfdff0905c9610ca2bc6e49361687cb32c90073c75d8
[INFO] running `Command { std: "docker" "start" "-a" "62601b068780f6081cfcdfdff0905c9610ca2bc6e49361687cb32c90073c75d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62601b068780f6081cfcdfdff0905c9610ca2bc6e49361687cb32c90073c75d8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62601b068780f6081cfcdfdff0905c9610ca2bc6e49361687cb32c90073c75d8", kill_on_drop: false }`
[INFO] [stdout] 62601b068780f6081cfcdfdff0905c9610ca2bc6e49361687cb32c90073c75d8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "RUSTDOCFLAGS=--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:ecb52c4cf6672b83cc996368a05b4a059042425f2b6ba9cd23a06cdead5d8d70" "/opt/rustwide/cargo-home/bin/cargo" "+7308c22c6a8d77e82187e290e1f7459870e48d12" "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] 685b1d8936d1efacd33784d300561d6ae55e156d4a2c8d4c8a0dfb651e7fef9d
[INFO] running `Command { std: "docker" "start" "-a" "685b1d8936d1efacd33784d300561d6ae55e156d4a2c8d4c8a0dfb651e7fef9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling libm v0.2.4
[INFO] [stderr]    Compiling libc v0.2.129
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.16
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]    Compiling anyhow v1.0.60
[INFO] [stderr]     Checking matrixmultiply v0.3.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking getrandom v0.2.7
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking num-complex v0.4.2
[INFO] [stderr]     Checking ndarray v0.15.6
[INFO] [stderr]     Checking rand_distr v0.4.3
[INFO] [stderr]     Checking ndarray-rand v0.14.0
[INFO] [stderr]     Checking gym-core v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.49s
[INFO] running `Command { std: "docker" "inspect" "685b1d8936d1efacd33784d300561d6ae55e156d4a2c8d4c8a0dfb651e7fef9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "685b1d8936d1efacd33784d300561d6ae55e156d4a2c8d4c8a0dfb651e7fef9d", kill_on_drop: false }`
[INFO] [stdout] 685b1d8936d1efacd33784d300561d6ae55e156d4a2c8d4c8a0dfb651e7fef9d