[INFO] cloning repository https://github.com/ftriquet/rs-npuzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ftriquet/rs-npuzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftriquet%2Frs-npuzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftriquet%2Frs-npuzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f821feb7b6b057a1f6dd62caecc93cffb08f79d
[INFO] checking ftriquet/rs-npuzzle/0f821feb7b6b057a1f6dd62caecc93cffb08f79d against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftriquet%2Frs-npuzzle" "/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/ftriquet/rs-npuzzle on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ftriquet/rs-npuzzle
[INFO] finished tweaking git repo https://github.com/ftriquet/rs-npuzzle
[INFO] tweaked toml for git repo https://github.com/ftriquet/rs-npuzzle written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/ftriquet/rs-npuzzle 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rand v0.3.15
[INFO] [stderr]   Downloaded term_size v0.2.3
[INFO] [stderr]   Downloaded vec_map v0.6.0
[INFO] [stderr]   Downloaded unicode-width v0.1.4
[INFO] [stderr]   Downloaded bitflags v0.7.0
[INFO] [stderr]   Downloaded clap v2.20.5
[INFO] [stderr]   Downloaded strsim v0.6.0
[INFO] [stderr]   Downloaded libc v0.2.20
[INFO] [stderr]   Downloaded unicode-segmentation v1.1.0
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c31b2fe8133c081a8c75eeca0a6edd27ce9921f7802494930b1d53f9ef8429ca
[INFO] running `Command { std: "docker" "start" "-a" "c31b2fe8133c081a8c75eeca0a6edd27ce9921f7802494930b1d53f9ef8429ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c31b2fe8133c081a8c75eeca0a6edd27ce9921f7802494930b1d53f9ef8429ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c31b2fe8133c081a8c75eeca0a6edd27ce9921f7802494930b1d53f9ef8429ca", kill_on_drop: false }`
[INFO] [stdout] c31b2fe8133c081a8c75eeca0a6edd27ce9921f7802494930b1d53f9ef8429ca
[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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4e9b3e1626b13536c25f715ec9d1063f2c264d963b91bfdc92e7151a7991ec61
[INFO] running `Command { std: "docker" "start" "-a" "4e9b3e1626b13536c25f715ec9d1063f2c264d963b91bfdc92e7151a7991ec61", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking libc v0.2.20
[INFO] [stderr]     Checking vec_map v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking unicode-segmentation v1.1.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking unicode-width v0.1.4
[INFO] [stderr]     Checking term_size v0.2.3
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking clap v2.20.5
[INFO] [stderr]     Checking n-puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/node/mod.rs:152:19
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let len = try!(lines.next()
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `super::heuristics`
[INFO] [stdout]    --> src/node/mod.rs:438:9
[INFO] [stdout]     |
[INFO] [stdout] 438 |     use super::heuristics;
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^ no `heuristics` in `node`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing this module instead
[INFO] [stdout]     |
[INFO] [stdout] 438 |     use heuristics;
[INFO] [stdout]     |         ~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/node/mod.rs:152:19
[INFO] [stdout]     |
[INFO] [stdout] 152 |         let len = try!(lines.next()
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `n-puzzle` (bin "n-puzzle" test) due to 2 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "4e9b3e1626b13536c25f715ec9d1063f2c264d963b91bfdc92e7151a7991ec61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e9b3e1626b13536c25f715ec9d1063f2c264d963b91bfdc92e7151a7991ec61", kill_on_drop: false }`
[INFO] [stdout] 4e9b3e1626b13536c25f715ec9d1063f2c264d963b91bfdc92e7151a7991ec61