[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 eca445e5ae4a6679cc27d3a09106ce245e13a5a6 for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Feaasna%2Fpuzzle_generator" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[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-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eaasna/puzzle_generator on toolchain eca445e5ae4a6679cc27d3a09106ce245e13a5a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.203
[INFO] [stderr]   Downloaded markov v1.1.0
[INFO] [stderr]   Downloaded fixedbitset v0.2.0
[INFO] [stderr]   Downloaded serde_yaml v0.8.26
[INFO] [stderr]   Downloaded serde_derive v1.0.203
[INFO] [stderr]   Downloaded itertools v0.9.0
[INFO] [stderr]   Downloaded petgraph v0.5.1
[INFO] [stderr]   Downloaded miniquad v0.4.5
[INFO] [stderr]   Downloaded ndk-sys v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174
[INFO] running `Command { std: "docker" "start" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174" "/opt/rustwide/cargo-home/bin/cargo" "+eca445e5ae4a6679cc27d3a09106ce245e13a5a6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling proc-macro2 v1.0.85
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling serde v1.0.203
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking unicode-width v0.1.13
[INFO] [stderr]    Compiling miniquad v0.4.5
[INFO] [stderr]     Checking either v1.12.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking fixedbitset v0.2.0
[INFO] [stderr]     Checking getopts v0.2.21
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking find_folder v0.3.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling quote v1.0.36
[INFO] [stderr]    Compiling syn v2.0.66
[INFO] [stderr]     Checking petgraph v0.5.1
[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] warning: unused dependency `find_folder`
[INFO] [stderr]  --> Cargo.toml:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | find_folder = "0.3.0"
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `find_folder`
[INFO] [stderr] warning: `puzzle` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 17.92s
[INFO] running `Command { std: "docker" "inspect" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174", kill_on_drop: false }`
[INFO] [stdout] 40fcd31a56941812ac50610f21d05a71add0538cc27f9c9ad5d64002425bc174