[INFO] fetching crate gym 2.2.1...
[INFO] checking gym-2.2.1 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate gym 2.2.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate gym 2.2.1 on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gym 2.2.1
[INFO] finished tweaking crates.io crate gym 2.2.1
[INFO] tweaked toml for crates.io crate gym 2.2.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate crates.io crate gym 2.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b366fd91827c88533f7fc2e7572cfedc1611bfaa003e1fd1d09e286a19739820
[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" "b366fd91827c88533f7fc2e7572cfedc1611bfaa003e1fd1d09e286a19739820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b366fd91827c88533f7fc2e7572cfedc1611bfaa003e1fd1d09e286a19739820", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b366fd91827c88533f7fc2e7572cfedc1611bfaa003e1fd1d09e286a19739820", kill_on_drop: false }`
[INFO] [stdout] b366fd91827c88533f7fc2e7572cfedc1611bfaa003e1fd1d09e286a19739820
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 34172bf9ebf32de32bb9d71f0a433e80bd14b53522587308036f83b2b38eda87
[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" "34172bf9ebf32de32bb9d71f0a433e80bd14b53522587308036f83b2b38eda87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling cc v1.0.47
[INFO] [stderr]    Compiling getrandom v0.1.10
[INFO] [stderr]    Compiling syn v1.0.9
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling cpython v0.4.1
[INFO] [stderr]    Compiling ndarray v0.13.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.2
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling python3-sys v0.4.1
[INFO] [stderr]    Compiling synstructure v0.12.3
[INFO] [stderr]    Compiling failure_derive v0.1.6
[INFO] [stderr]     Checking failure v0.1.6
[INFO] [stderr]     Checking gym v2.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 56.50s
[INFO] running `Command { std: "docker" "inspect" "34172bf9ebf32de32bb9d71f0a433e80bd14b53522587308036f83b2b38eda87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "34172bf9ebf32de32bb9d71f0a433e80bd14b53522587308036f83b2b38eda87", kill_on_drop: false }`
[INFO] [stdout] 34172bf9ebf32de32bb9d71f0a433e80bd14b53522587308036f83b2b38eda87