[INFO] fetching crate hamster 0.0.4...
[INFO] checking hamster-0.0.4 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate hamster 0.0.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate hamster 0.0.4 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 hamster 0.0.4
[INFO] finished tweaking crates.io crate hamster 0.0.4
[INFO] tweaked toml for crates.io crate hamster 0.0.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate hamster 0.0.4 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] [stderr]     Blocking waiting for file lock on package cache
[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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 826cac8aacbeff21468d1f72929ff8897c5e1c819797e2baf6b7db46efa4ee64
[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" "826cac8aacbeff21468d1f72929ff8897c5e1c819797e2baf6b7db46efa4ee64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "826cac8aacbeff21468d1f72929ff8897c5e1c819797e2baf6b7db46efa4ee64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "826cac8aacbeff21468d1f72929ff8897c5e1c819797e2baf6b7db46efa4ee64", kill_on_drop: false }`
[INFO] [stdout] 826cac8aacbeff21468d1f72929ff8897c5e1c819797e2baf6b7db46efa4ee64
[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" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1996519205a74b83378db6f421396915e9f449be8b8fd6a9661bb0bdd96f561e
[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" "1996519205a74b83378db6f421396915e9f449be8b8fd6a9661bb0bdd96f561e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking dtoa v0.4.5
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking git_info v0.1.1
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]     Checking sharded-slab v0.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking subprocess v0.2.4
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking shellexpand v2.0.0
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.51
[INFO] [stderr]     Checking serde_yaml v0.8.11
[INFO] [stderr]    Compiling quote v1.0.3
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking chrono v0.4.11
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.15
[INFO] [stderr]    Compiling tracing-attributes v0.1.7
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]     Checking tracing v0.1.13
[INFO] [stderr]     Checking thiserror v1.0.15
[INFO] [stderr]     Checking yaml-merge-keys v0.4.0
[INFO] [stderr]     Checking gitlab_ci_parser v0.0.5
[INFO] [stderr]     Checking hamster v0.0.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 53.92s
[INFO] running `Command { std: "docker" "inspect" "1996519205a74b83378db6f421396915e9f449be8b8fd6a9661bb0bdd96f561e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1996519205a74b83378db6f421396915e9f449be8b8fd6a9661bb0bdd96f561e", kill_on_drop: false }`
[INFO] [stdout] 1996519205a74b83378db6f421396915e9f449be8b8fd6a9661bb0bdd96f561e