[INFO] fetching crate believer 0.2.1...
[INFO] checking believer-0.2.1 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate believer 0.2.1 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate believer 0.2.1 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate believer 0.2.1
[INFO] finished tweaking crates.io crate believer 0.2.1
[INFO] tweaked toml for crates.io crate believer 0.2.1 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate believer 0.2.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 6e51385d7095ee44770c7ef357cd1129ae34a391005e26204c2a1d369b01238e
[INFO] running `Command { std: "docker" "start" "-a" "6e51385d7095ee44770c7ef357cd1129ae34a391005e26204c2a1d369b01238e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e51385d7095ee44770c7ef357cd1129ae34a391005e26204c2a1d369b01238e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e51385d7095ee44770c7ef357cd1129ae34a391005e26204c2a1d369b01238e", kill_on_drop: false }`
[INFO] [stdout] 6e51385d7095ee44770c7ef357cd1129ae34a391005e26204c2a1d369b01238e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "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] 08f5d7b6f2be00dde4dc4cc4eb46755d072df57d64de2a72da2e74fbd7d4dd83
[INFO] running `Command { std: "docker" "start" "-a" "08f5d7b6f2be00dde4dc4cc4eb46755d072df57d64de2a72da2e74fbd7d4dd83", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling getrandom v0.1.9
[INFO] [stderr]    Compiling num-bigint v0.2.2
[INFO] [stderr]    Compiling rayon-core v1.6.0
[INFO] [stderr]     Checking itertools v0.8.1
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking arrayvec v0.4.11
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking crossbeam-utils v0.6.6
[INFO] [stderr]     Checking c2-chacha v0.2.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]     Checking rand_core v0.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.7.2
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking rayon v1.2.0
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking believer v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.18s
[INFO] running `Command { std: "docker" "inspect" "08f5d7b6f2be00dde4dc4cc4eb46755d072df57d64de2a72da2e74fbd7d4dd83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08f5d7b6f2be00dde4dc4cc4eb46755d072df57d64de2a72da2e74fbd7d4dd83", kill_on_drop: false }`
[INFO] [stdout] 08f5d7b6f2be00dde4dc4cc4eb46755d072df57d64de2a72da2e74fbd7d4dd83