[INFO] cloning repository https://github.com/pj-newstar/proof-of-work
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pj-newstar/proof-of-work" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpj-newstar%2Fproof-of-work", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpj-newstar%2Fproof-of-work'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 043666198117b5a1badfb9123f269d5e2720258d
[INFO] checking pj-newstar/proof-of-work against try#63132bd615c9bf75e93af8405d00064212331708 for pr-153975
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpj-newstar%2Fproof-of-work" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pj-newstar/proof-of-work
[INFO] finished tweaking git repo https://github.com/pj-newstar/proof-of-work
[INFO] tweaked toml for git repo https://github.com/pj-newstar/proof-of-work written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pj-newstar/proof-of-work on toolchain 63132bd615c9bf75e93af8405d00064212331708
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pj-newstar/proof-of-work already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded kctf-pow v2.1.1
[INFO] [stderr]   Downloaded rug v1.28.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 983a85301e4990bdc34ec6992b928b8ef31c24dd8af27033f148683e0033065a
[INFO] running `Command { std: "docker" "start" "-a" "983a85301e4990bdc34ec6992b928b8ef31c24dd8af27033f148683e0033065a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "983a85301e4990bdc34ec6992b928b8ef31c24dd8af27033f148683e0033065a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "983a85301e4990bdc34ec6992b928b8ef31c24dd8af27033f148683e0033065a", kill_on_drop: false }`
[INFO] [stdout] 983a85301e4990bdc34ec6992b928b8ef31c24dd8af27033f148683e0033065a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+63132bd615c9bf75e93af8405d00064212331708" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56171f14bfad11460397990223b86d529da75dd48ce289d72c310fdb6ce52e89
[INFO] running `Command { std: "docker" "start" "-a" "56171f14bfad11460397990223b86d529da75dd48ce289d72c310fdb6ce52e89", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.183
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.6.8
[INFO] [stderr]    Compiling getrandom v0.4.2
[INFO] [stderr]     Checking rand_core v0.10.0
[INFO] [stderr]     Checking cpufeatures v0.3.0
[INFO] [stderr]    Compiling rug v1.28.1
[INFO] [stderr]     Checking clap_lex v1.0.0
[INFO] [stderr]     Checking az v1.3.0
[INFO] [stderr]     Checking colored v3.1.1
[INFO] [stderr]    Compiling quote v1.0.45
[INFO] [stderr]     Checking clap_builder v4.5.60
[INFO] [stderr]     Checking chacha20 v0.10.0
[INFO] [stderr]    Compiling syn v2.0.117
[INFO] [stderr]     Checking rand v0.10.0
[INFO] [stderr]    Compiling clap_derive v4.5.55
[INFO] [stderr]     Checking clap v4.5.60
[INFO] [stderr]     Checking kctf-pow v2.1.1
[INFO] [stderr]     Checking pow v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 36.27s
[INFO] running `Command { std: "docker" "inspect" "56171f14bfad11460397990223b86d529da75dd48ce289d72c310fdb6ce52e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56171f14bfad11460397990223b86d529da75dd48ce289d72c310fdb6ce52e89", kill_on_drop: false }`
[INFO] [stdout] 56171f14bfad11460397990223b86d529da75dd48ce289d72c310fdb6ce52e89