[INFO] cloning repository https://github.com/eaasna/puzzle_generator
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eaasna/puzzle_generator" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feaasna%2Fpuzzle_generator", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feaasna%2Fpuzzle_generator'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 29aaaf23a2e21f18be3bbacf53ece515e800f688
[INFO] checking eaasna/puzzle_generator against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feaasna%2Fpuzzle_generator" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/eaasna/puzzle_generator on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/eaasna/puzzle_generator
[INFO] finished tweaking git repo https://github.com/eaasna/puzzle_generator
[INFO] tweaked toml for git repo https://github.com/eaasna/puzzle_generator written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/eaasna/puzzle_generator 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" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded markov v1.1.0
[INFO] [stderr]   Downloaded miniquad v0.4.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 610fb0ed668f0ed8b24837f14cdb75156786e7af17765f54a15e3fc4ff5605c6
[INFO] running `Command { std: "docker" "start" "-a" "610fb0ed668f0ed8b24837f14cdb75156786e7af17765f54a15e3fc4ff5605c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "610fb0ed668f0ed8b24837f14cdb75156786e7af17765f54a15e3fc4ff5605c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "610fb0ed668f0ed8b24837f14cdb75156786e7af17765f54a15e3fc4ff5605c6", kill_on_drop: false }`
[INFO] [stdout] 610fb0ed668f0ed8b24837f14cdb75156786e7af17765f54a15e3fc4ff5605c6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 28b00ae3c6c518839a325ee80e1d62e5ed44dcbe50c0e04e47c2ddb8d32f19c4
[INFO] running `Command { std: "docker" "start" "-a" "28b00ae3c6c518839a325ee80e1d62e5ed44dcbe50c0e04e47c2ddb8d32f19c4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]    Compiling miniquad v0.4.5
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking ryu v1.0.18
[INFO] [stderr]     Checking find_folder v0.3.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking petgraph v0.5.1
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]    Compiling serde_derive v1.0.203
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking markov v1.1.0
[INFO] [stderr]     Checking puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.01s
[INFO] running `Command { std: "docker" "inspect" "28b00ae3c6c518839a325ee80e1d62e5ed44dcbe50c0e04e47c2ddb8d32f19c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28b00ae3c6c518839a325ee80e1d62e5ed44dcbe50c0e04e47c2ddb8d32f19c4", kill_on_drop: false }`
[INFO] [stdout] 28b00ae3c6c518839a325ee80e1d62e5ed44dcbe50c0e04e47c2ddb8d32f19c4