[INFO] fetching crate jens 0.6.0...
[INFO] checking jens-0.6.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate jens 0.6.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate jens 0.6.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate jens 0.6.0
[INFO] finished tweaking crates.io crate jens 0.6.0
[INFO] tweaked toml for crates.io crate jens 0.6.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 5b98dc917540786810380c19008f7730cb4d8783e2e4db86d8a21701bbefe20d
[INFO] running `Command { std: "docker" "start" "-a" "5b98dc917540786810380c19008f7730cb4d8783e2e4db86d8a21701bbefe20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5b98dc917540786810380c19008f7730cb4d8783e2e4db86d8a21701bbefe20d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b98dc917540786810380c19008f7730cb4d8783e2e4db86d8a21701bbefe20d", kill_on_drop: false }`
[INFO] [stdout] 5b98dc917540786810380c19008f7730cb4d8783e2e4db86d8a21701bbefe20d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] f89ae0710b2d20debc3462f5abfcbd7ef661ed42d02d4d7d0ab1549ba72ef4c5
[INFO] running `Command { std: "docker" "start" "-a" "f89ae0710b2d20debc3462f5abfcbd7ef661ed42d02d4d7d0ab1549ba72ef4c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking ci_info v0.3.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking termios v0.3.3
[INFO] [stderr]     Checking clicolors-control v1.0.1
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking pest v2.1.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking console v0.7.7
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking jens v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking serde v1.0.123
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking ron v0.4.2
[INFO] [stderr]     Checking serde_yaml v0.8.15
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking insta v0.6.3
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 43.45s
[INFO] running `Command { std: "docker" "inspect" "f89ae0710b2d20debc3462f5abfcbd7ef661ed42d02d4d7d0ab1549ba72ef4c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f89ae0710b2d20debc3462f5abfcbd7ef661ed42d02d4d7d0ab1549ba72ef4c5", kill_on_drop: false }`
[INFO] [stdout] f89ae0710b2d20debc3462f5abfcbd7ef661ed42d02d4d7d0ab1549ba72ef4c5