[INFO] cloning repository https://github.com/bebosson/N_Puzzle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bebosson/N_Puzzle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbebosson%2FN_Puzzle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbebosson%2FN_Puzzle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a31f8bf92415bf613ae4766bda19b91fad35dfaa
[INFO] checking bebosson/N_Puzzle against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbebosson%2FN_Puzzle" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/bebosson/N_Puzzle
[INFO] finished tweaking git repo https://github.com/bebosson/N_Puzzle
[INFO] tweaked toml for git repo https://github.com/bebosson/N_Puzzle written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/bebosson/N_Puzzle on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/bebosson/N_Puzzle 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e99ac3a5eb1ee8600563a86f0f8ed4ee5232abbc62db1ed588bd7f722553c825
[INFO] running `Command { std: "docker" "start" "-a" "e99ac3a5eb1ee8600563a86f0f8ed4ee5232abbc62db1ed588bd7f722553c825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e99ac3a5eb1ee8600563a86f0f8ed4ee5232abbc62db1ed588bd7f722553c825", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e99ac3a5eb1ee8600563a86f0f8ed4ee5232abbc62db1ed588bd7f722553c825", kill_on_drop: false }`
[INFO] [stdout] e99ac3a5eb1ee8600563a86f0f8ed4ee5232abbc62db1ed588bd7f722553c825
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a91c93c9ce95783aab0500cac62117029e720c1f8e2368aa47c3926423cf6279
[INFO] running `Command { std: "docker" "start" "-a" "a91c93c9ce95783aab0500cac62117029e720c1f8e2368aa47c3926423cf6279", kill_on_drop: false }`
[INFO] [stderr]    Compiling n_puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:124:19
[INFO] [stdout]     |
[INFO] [stdout] 124 |         if a < 0 {((a * - 1) as u32).try_into().unwrap()}
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:134:35
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   distance = abs((j.pos_x - case.pos_x).try_into().unwrap()) + abs((j.pos_y - case.pos_y).try_into().unwrap());                   
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:134:85
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   distance = abs((j.pos_x - case.pos_x).try_into().unwrap()) + abs((j.pos_y - case.pos_y).try_into().unwrap());                   
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     x = abs((j.pos_x - case.pos_x).try_into().unwrap());
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:150:29
[INFO] [stdout]     |
[INFO] [stdout] 150 |                     y = abs((j.pos_y - case.pos_y).try_into().unwrap());
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `n_puzzle` (lib test) due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:124:19
[INFO] [stdout]     |
[INFO] [stdout] 124 |         if a < 0 {((a * - 1) as u32).try_into().unwrap()}
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:134:35
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   distance = abs((j.pos_x - case.pos_x).try_into().unwrap()) + abs((j.pos_y - case.pos_y).try_into().unwrap());                   
[INFO] [stdout]     |                      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:134:85
[INFO] [stdout]     |
[INFO] [stdout] 134 | ...   distance = abs((j.pos_x - case.pos_x).try_into().unwrap()) + abs((j.pos_y - case.pos_y).try_into().unwrap());                   
[INFO] [stdout]     |                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:149:29
[INFO] [stdout]     |
[INFO] [stdout] 149 |                     x = abs((j.pos_x - case.pos_x).try_into().unwrap());
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<i32, Infallible>
[INFO] [stdout]    --> src/solver/grid.rs:150:29
[INFO] [stdout]     |
[INFO] [stdout] 150 |                     y = abs((j.pos_y - case.pos_y).try_into().unwrap());
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `n_puzzle` (lib) due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "a91c93c9ce95783aab0500cac62117029e720c1f8e2368aa47c3926423cf6279", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a91c93c9ce95783aab0500cac62117029e720c1f8e2368aa47c3926423cf6279", kill_on_drop: false }`
[INFO] [stdout] a91c93c9ce95783aab0500cac62117029e720c1f8e2368aa47c3926423cf6279