[INFO] cloning repository https://github.com/rcelebrone/Rust-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/rcelebrone/Rust-Proof-Of-Work" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcelebrone%2FRust-Proof-Of-Work", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcelebrone%2FRust-Proof-Of-Work'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a48f1208fe0bef5d458294a22cc57288ddaf9d46
[INFO] checking rcelebrone/Rust-Proof-Of-Work against try#a0cd57eba5d417638d3351ba13fc414ad1a24bec for pr-134688-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frcelebrone%2FRust-Proof-Of-Work" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rcelebrone/Rust-Proof-Of-Work on toolchain a0cd57eba5d417638d3351ba13fc414ad1a24bec
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rcelebrone/Rust-Proof-Of-Work
[INFO] finished tweaking git repo https://github.com/rcelebrone/Rust-Proof-Of-Work
[INFO] tweaked toml for git repo https://github.com/rcelebrone/Rust-Proof-Of-Work written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/rcelebrone/Rust-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" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "fetch" "--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-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d661b536045811707eb48f0fc98ae8ff1725cd18eecc575af5edbb613c730a64
[INFO] running `Command { std: "docker" "start" "-a" "d661b536045811707eb48f0fc98ae8ff1725cd18eecc575af5edbb613c730a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d661b536045811707eb48f0fc98ae8ff1725cd18eecc575af5edbb613c730a64", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d661b536045811707eb48f0fc98ae8ff1725cd18eecc575af5edbb613c730a64", kill_on_drop: false }`
[INFO] [stdout] d661b536045811707eb48f0fc98ae8ff1725cd18eecc575af5edbb613c730a64
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+a0cd57eba5d417638d3351ba13fc414ad1a24bec" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b4ca35251817101224e5c354f15adca8421cb5f56ed229dbcc7d0a95ae6b5fe4
[INFO] running `Command { std: "docker" "start" "-a" "b4ca35251817101224e5c354f15adca8421cb5f56ed229dbcc7d0a95ae6b5fe4", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling generic-array v0.14.5
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking block-buffer v0.10.2
[INFO] [stderr]     Checking crypto-common v0.1.2
[INFO] [stderr]     Checking digest v0.10.2
[INFO] [stderr]     Checking sha2 v0.10.1
[INFO] [stderr]     Checking rust_proof_of_work v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.94s
[INFO] running `Command { std: "docker" "inspect" "b4ca35251817101224e5c354f15adca8421cb5f56ed229dbcc7d0a95ae6b5fe4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4ca35251817101224e5c354f15adca8421cb5f56ed229dbcc7d0a95ae6b5fe4", kill_on_drop: false }`
[INFO] [stdout] b4ca35251817101224e5c354f15adca8421cb5f56ed229dbcc7d0a95ae6b5fe4