[INFO] cloning repository https://github.com/rsilva42/grimly_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rsilva42/grimly_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsilva42%2Fgrimly_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsilva42%2Fgrimly_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5ab16ff8b14cf4b9fa7f86ce92e07fa5d539e8b7
[INFO] testing rsilva42/grimly_rust against try#8262275854dc0e5381c9d42d56257d94932c5a87 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frsilva42%2Fgrimly_rust" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rsilva42/grimly_rust on toolchain 8262275854dc0e5381c9d42d56257d94932c5a87
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rsilva42/grimly_rust
[INFO] finished tweaking git repo https://github.com/rsilva42/grimly_rust
[INFO] tweaked toml for git repo https://github.com/rsilva42/grimly_rust written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/rsilva42/grimly_rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f7ea23ff64a6d5700272576dd8f7b897cfa2a4653af062a699548531fd6bd28b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f7ea23ff64a6d5700272576dd8f7b897cfa2a4653af062a699548531fd6bd28b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f7ea23ff64a6d5700272576dd8f7b897cfa2a4653af062a699548531fd6bd28b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7ea23ff64a6d5700272576dd8f7b897cfa2a4653af062a699548531fd6bd28b", kill_on_drop: false }`
[INFO] [stdout] f7ea23ff64a6d5700272576dd8f7b897cfa2a4653af062a699548531fd6bd28b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a20b5f3ee5d36e910c34a1ea7ff16611d358e48b658522481de18d7a0b48977
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "8a20b5f3ee5d36e910c34a1ea7ff16611d358e48b658522481de18d7a0b48977", kill_on_drop: false }`
[INFO] [stderr]    Compiling grimly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `first_line`
[INFO] [stdout]   --> src/main.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stdout]    |               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `maze`
[INFO] [stdout]   --> src/main.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> src/main.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn solve(map: Maze) -> Vec<String> {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wall`
[INFO] [stdout]  --> src/main.rs:6:2
[INFO] [stdout]   |
[INFO] [stdout] 6 |     wall:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `empty`
[INFO] [stdout]  --> src/main.rs:7:2
[INFO] [stdout]   |
[INFO] [stdout] 7 |     empty:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]  --> src/main.rs:8:2
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]  --> src/main.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 |     start:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/main.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     end:    char,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/main.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     height: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> src/main.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     width:    i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `maze`
[INFO] [stdout]   --> src/main.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     maze:    Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `chars`
[INFO] [stdout]   --> src/main.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     chars:    Chars,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.06s
[INFO] running `Command { std: "docker" "inspect" "8a20b5f3ee5d36e910c34a1ea7ff16611d358e48b658522481de18d7a0b48977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a20b5f3ee5d36e910c34a1ea7ff16611d358e48b658522481de18d7a0b48977", kill_on_drop: false }`
[INFO] [stdout] 8a20b5f3ee5d36e910c34a1ea7ff16611d358e48b658522481de18d7a0b48977
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a8fb05bf1e11a09a921c09086d279066c6fe488162f8ec0ae1eae26b9849600a
[INFO] running `Command { std: "docker" "start" "-a" "a8fb05bf1e11a09a921c09086d279066c6fe488162f8ec0ae1eae26b9849600a", kill_on_drop: false }`
[INFO] [stderr]    Compiling grimly v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `first_line`
[INFO] [stdout]   --> src/main.rs:20:15
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stdout]    |               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_line`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `maze`
[INFO] [stdout]   --> src/main.rs:20:35
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `map`
[INFO] [stdout]   --> src/main.rs:52:10
[INFO] [stdout]    |
[INFO] [stdout] 52 | fn solve(map: Maze) -> Vec<String> {
[INFO] [stdout]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `wall`
[INFO] [stdout]  --> src/main.rs:6:2
[INFO] [stdout]   |
[INFO] [stdout] 6 |     wall:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `empty`
[INFO] [stdout]  --> src/main.rs:7:2
[INFO] [stdout]   |
[INFO] [stdout] 7 |     empty:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `path`
[INFO] [stdout]  --> src/main.rs:8:2
[INFO] [stdout]   |
[INFO] [stdout] 8 |     path:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `start`
[INFO] [stdout]  --> src/main.rs:9:2
[INFO] [stdout]   |
[INFO] [stdout] 9 |     start:    char,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `end`
[INFO] [stdout]   --> src/main.rs:10:2
[INFO] [stdout]    |
[INFO] [stdout] 10 |     end:    char,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `height`
[INFO] [stdout]   --> src/main.rs:14:2
[INFO] [stdout]    |
[INFO] [stdout] 14 |     height: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `width`
[INFO] [stdout]   --> src/main.rs:15:2
[INFO] [stdout]    |
[INFO] [stdout] 15 |     width:    i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `maze`
[INFO] [stdout]   --> src/main.rs:16:2
[INFO] [stdout]    |
[INFO] [stdout] 16 |     maze:    Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `chars`
[INFO] [stdout]   --> src/main.rs:17:2
[INFO] [stdout]    |
[INFO] [stdout] 17 |     chars:    Chars,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.75s
[INFO] running `Command { std: "docker" "inspect" "a8fb05bf1e11a09a921c09086d279066c6fe488162f8ec0ae1eae26b9849600a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8fb05bf1e11a09a921c09086d279066c6fe488162f8ec0ae1eae26b9849600a", kill_on_drop: false }`
[INFO] [stdout] a8fb05bf1e11a09a921c09086d279066c6fe488162f8ec0ae1eae26b9849600a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+8262275854dc0e5381c9d42d56257d94932c5a87" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4246055198a7c8ce0400cce45fbc9527a2388292761fec74466164cc37d966a3
[INFO] running `Command { std: "docker" "start" "-a" "4246055198a7c8ce0400cce45fbc9527a2388292761fec74466164cc37d966a3", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: unused variable: `first_line`
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/main.rs:20:15
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stdout] 
[INFO] [stderr]    |               ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_first_line`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `maze`
[INFO] [stderr]   --> src/main.rs:20:35
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn build_maze(first_line: String, maze: Vec<String>) -> Maze {
[INFO] [stderr]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_maze`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `map`
[INFO] [stderr]   --> src/main.rs:52:10
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn solve(map: Maze) -> Vec<String> {
[INFO] [stderr]    |          ^^^ help: if this is intentional, prefix it with an underscore: `_map`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `wall`
[INFO] [stderr]  --> src/main.rs:6:2
[INFO] [stderr]   |
[INFO] [stderr] 6 |     wall:    char,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `empty`
[INFO] [stderr]  --> src/main.rs:7:2
[INFO] [stderr]   |
[INFO] [stderr] 7 |     empty:    char,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `path`
[INFO] [stderr]  --> src/main.rs:8:2
[INFO] [stderr]   |
[INFO] [stderr] 8 |     path:    char,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `start`
[INFO] [stderr]  --> src/main.rs:9:2
[INFO] [stderr]   |
[INFO] [stderr] 9 |     start:    char,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `end`
[INFO] [stderr]   --> src/main.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     end:    char,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `height`
[INFO] [stderr]   --> src/main.rs:14:2
[INFO] [stderr]    |
[INFO] [stderr] 14 |     height: i32,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `width`
[INFO] [stderr]   --> src/main.rs:15:2
[INFO] [stderr]    |
[INFO] [stderr] 15 |     width:    i32,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `maze`
[INFO] [stderr]   --> src/main.rs:16:2
[INFO] [stderr]    |
[INFO] [stderr] 16 |     maze:    Vec<String>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `chars`
[INFO] [stderr]   --> src/main.rs:17:2
[INFO] [stderr]    |
[INFO] [stderr] 17 |     chars:    Chars,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `grimly` (bin "grimly" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/grimly-183e7f411ac9e531)
[INFO] running `Command { std: "docker" "inspect" "4246055198a7c8ce0400cce45fbc9527a2388292761fec74466164cc37d966a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4246055198a7c8ce0400cce45fbc9527a2388292761fec74466164cc37d966a3", kill_on_drop: false }`
[INFO] [stdout] 4246055198a7c8ce0400cce45fbc9527a2388292761fec74466164cc37d966a3