[INFO] updating cached repository https://github.com/jeorb/icfp2006
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1d5dce52c26800e02857ae5f260791fef6450b46
[INFO] testing jeorb/icfp2006 against beta-2019-09-28 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeorb%2Ficfp2006" "work/builds/worker-6/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jeorb/icfp2006 on toolchain beta-2019-09-28
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/jeorb/icfp2006
[INFO] finished tweaking git repo https://github.com/jeorb/icfp2006
[INFO] tweaked toml for git repo https://github.com/jeorb/icfp2006 written to work/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jeorb/icfp2006 already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"`
[INFO] [stdout] 517992012a187f737be7ceee192fe610f3d1a560f3a86e9449132c413b7648a0
[INFO] running `"docker" "start" "-a" "517992012a187f737be7ceee192fe610f3d1a560f3a86e9449132c413b7648a0"`
[INFO] [stderr]    Compiling icfp2006 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `dump_file` is never read
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut dump_file = "".to_owned();
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `"docker" "inspect" "517992012a187f737be7ceee192fe610f3d1a560f3a86e9449132c413b7648a0"`
[INFO] running `"docker" "rm" "-f" "517992012a187f737be7ceee192fe610f3d1a560f3a86e9449132c413b7648a0"`
[INFO] [stdout] 517992012a187f737be7ceee192fe610f3d1a560f3a86e9449132c413b7648a0
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4726a8eb6ec30add12bb412533e808dd5fffcb4f274b795635410177f3293a9c
[INFO] running `"docker" "start" "-a" "4726a8eb6ec30add12bb412533e808dd5fffcb4f274b795635410177f3293a9c"`
[INFO] [stderr]    Compiling icfp2006 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `dump_file` is never read
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut dump_file = "".to_owned();
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `"docker" "inspect" "4726a8eb6ec30add12bb412533e808dd5fffcb4f274b795635410177f3293a9c"`
[INFO] running `"docker" "rm" "-f" "4726a8eb6ec30add12bb412533e808dd5fffcb4f274b795635410177f3293a9c"`
[INFO] [stdout] 4726a8eb6ec30add12bb412533e808dd5fffcb4f274b795635410177f3293a9c
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"`
[INFO] [stdout] dbd026615bab9052303c6690c848885df3e9f7f805f9d3e51fb796ce9e775bf3
[INFO] running `"docker" "start" "-a" "dbd026615bab9052303c6690c848885df3e9f7f805f9d3e51fb796ce9e775bf3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/icfp2006-45af444b87ea84cf
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "dbd026615bab9052303c6690c848885df3e9f7f805f9d3e51fb796ce9e775bf3"`
[INFO] running `"docker" "rm" "-f" "dbd026615bab9052303c6690c848885df3e9f7f805f9d3e51fb796ce9e775bf3"`
[INFO] [stdout] dbd026615bab9052303c6690c848885df3e9f7f805f9d3e51fb796ce9e775bf3