[INFO] updating cached repository pepijnd/rubiks-puzzle
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/pepijnd/rubiks-puzzle
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/pepijnd/rubiks-puzzle" "work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/pepijnd/rubiks-puzzle" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/rubiks-puzzle"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/rubiks-puzzle'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 7c411abea30d3b0f03823d532ac4a1653923d896
[INFO] sha for GitHub repo pepijnd/rubiks-puzzle: 7c411abea30d3b0f03823d532ac4a1653923d896
[INFO] validating manifest of pepijnd/rubiks-puzzle on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of pepijnd/rubiks-puzzle on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing pepijnd/rubiks-puzzle
[INFO] finished frobbing pepijnd/rubiks-puzzle
[INFO] frobbed toml for pepijnd/rubiks-puzzle written to work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle/Cargo.toml
[INFO] started frobbing pepijnd/rubiks-puzzle
[INFO] finished frobbing pepijnd/rubiks-puzzle
[INFO] frobbed toml for pepijnd/rubiks-puzzle written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/pepijnd/rubiks-puzzle/Cargo.toml
[INFO] crate pepijnd/rubiks-puzzle already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing pepijnd/rubiks-puzzle against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 12adc336c0f2f647d56145285d68bfe5d99245b0ae40a0b7f2995a2987290f36
[INFO] running `"docker" "start" "-a" "12adc336c0f2f647d56145285d68bfe5d99245b0ae40a0b7f2995a2987290f36"`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling rubiks-puzzle v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::thread_rng;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::SliceRandom`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rand::prelude::SliceRandom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut pieces = vec![
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_sides`
[INFO] [stderr]   --> src/puzzle.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_sides(&self) -> Vec<&[Color]> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_side`
[INFO] [stderr]   --> src/puzzle.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn match_side(&self, other: &Piece, side: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.14s
[INFO] running `"docker" "inspect" "12adc336c0f2f647d56145285d68bfe5d99245b0ae40a0b7f2995a2987290f36"`
[INFO] running `"docker" "rm" "-f" "12adc336c0f2f647d56145285d68bfe5d99245b0ae40a0b7f2995a2987290f36"`
[INFO] [stdout] 12adc336c0f2f647d56145285d68bfe5d99245b0ae40a0b7f2995a2987290f36
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d5f45253cc259a4b3e66e0d5246356c7cb3b88e0ae9365f43c9c76805b4a96d7
[INFO] running `"docker" "start" "-a" "d5f45253cc259a4b3e66e0d5246356c7cb3b88e0ae9365f43c9c76805b4a96d7"`
[INFO] [stderr]    Compiling rubiks-puzzle v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::thread_rng`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::thread_rng;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::prelude::SliceRandom`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use rand::prelude::SliceRandom;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:11:9
[INFO] [stderr]    |
[INFO] [stderr] 11 |     let mut pieces = vec![
[INFO] [stderr]    |         ----^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_sides`
[INFO] [stderr]   --> src/puzzle.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn get_sides(&self) -> Vec<&[Color]> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_side`
[INFO] [stderr]   --> src/puzzle.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn match_side(&self, other: &Piece, side: usize) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.94s
[INFO] running `"docker" "inspect" "d5f45253cc259a4b3e66e0d5246356c7cb3b88e0ae9365f43c9c76805b4a96d7"`
[INFO] running `"docker" "rm" "-f" "d5f45253cc259a4b3e66e0d5246356c7cb3b88e0ae9365f43c9c76805b4a96d7"`
[INFO] [stdout] d5f45253cc259a4b3e66e0d5246356c7cb3b88e0ae9365f43c9c76805b4a96d7
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/pepijnd/rubiks-puzzle:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] a9bc7a74fe4278dc9a9759e01edef82d4ba793d1a6ab2294d4d1b31198031f76
[INFO] running `"docker" "start" "-a" "a9bc7a74fe4278dc9a9759e01edef82d4ba793d1a6ab2294d4d1b31198031f76"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rubiks_puzzle-3d89f051ff3c810e
[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" "a9bc7a74fe4278dc9a9759e01edef82d4ba793d1a6ab2294d4d1b31198031f76"`
[INFO] running `"docker" "rm" "-f" "a9bc7a74fe4278dc9a9759e01edef82d4ba793d1a6ab2294d4d1b31198031f76"`
[INFO] [stdout] a9bc7a74fe4278dc9a9759e01edef82d4ba793d1a6ab2294d4d1b31198031f76