[INFO] cloning repository https://github.com/JohnScience/aoc2021
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JohnScience/aoc2021" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnScience%2Faoc2021", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnScience%2Faoc2021'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 531d54302361fb49e90f7488fb9a74c3481a7ffe
[INFO] checking JohnScience/aoc2021 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%2FJohnScience%2Faoc2021" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/JohnScience/aoc2021
[INFO] finished tweaking git repo https://github.com/JohnScience/aoc2021
[INFO] tweaked toml for git repo https://github.com/JohnScience/aoc2021 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JohnScience/aoc2021 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/JohnScience/aoc2021 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 89bc083b9a4525514540ac8021911b2a500805150fe55c1f7880c7e805b6006b
[INFO] running `Command { std: "docker" "start" "-a" "89bc083b9a4525514540ac8021911b2a500805150fe55c1f7880c7e805b6006b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89bc083b9a4525514540ac8021911b2a500805150fe55c1f7880c7e805b6006b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89bc083b9a4525514540ac8021911b2a500805150fe55c1f7880c7e805b6006b", kill_on_drop: false }`
[INFO] [stdout] 89bc083b9a4525514540ac8021911b2a500805150fe55c1f7880c7e805b6006b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a8dcbe820ad8e9164aadbc42e2f5421507c72feed737cf6861fb3ca6939abbfd
[INFO] running `Command { std: "docker" "start" "-a" "a8dcbe820ad8e9164aadbc42e2f5421507c72feed737cf6861fb3ca6939abbfd", kill_on_drop: false }`
[INFO] [stderr]     Checking day02b v0.1.0 (/opt/rustwide/workdir/day02b)
[INFO] [stderr]     Checking day02a v0.1.0 (/opt/rustwide/workdir/day02a)
[INFO] [stderr] error: could not compile `day02a` (bin "day02a" test) due to 5 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 13 | |         if s.starts_with("f") {
[INFO] [stdout] 14 | |             let value = s.strip_prefix("forward ").unwrap().parse().unwrap();
[INFO] [stdout] 15 | |             return Ok(Command::Forward(value));
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |         unreachable!()
[INFO] [stdout] 26 | |     }
[INFO] [stdout]    | |_____^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |             return Ok(Command::Forward(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |             return Ok(Command::Down(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |             return Ok(Command::Up(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:54:23
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let command = line.parse::<Command>().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:19:53
[INFO] [stdout]    |
[INFO] [stdout] 19 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 20 | |         if s.starts_with("f") {
[INFO] [stdout] 21 | |             let value = s.strip_prefix("forward ").unwrap().parse().unwrap();
[INFO] [stdout] 22 | |             return Ok(Command::Forward(value));
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |         unreachable!()
[INFO] [stdout] 33 | |     }
[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<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |             return Ok(Command::Forward(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |             return Ok(Command::Down(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |             return Ok(Command::Up(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let command = line.parse::<Command>().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `day02b` (bin "day02b" test) due to 5 previous errors
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:19:53
[INFO] [stdout]    |
[INFO] [stdout] 19 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 20 | |         if s.starts_with("f") {
[INFO] [stdout] 21 | |             let value = s.strip_prefix("forward ").unwrap().parse().unwrap();
[INFO] [stdout] 22 | |             return Ok(Command::Forward(value));
[INFO] [stdout] ...  |
[INFO] [stdout] 32 | |         unreachable!()
[INFO] [stdout] 33 | |     }
[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<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:22:20
[INFO] [stdout]    |
[INFO] [stdout] 22 |             return Ok(Command::Forward(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:26:20
[INFO] [stdout]    |
[INFO] [stdout] 26 |             return Ok(Command::Down(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:30:20
[INFO] [stdout]    |
[INFO] [stdout] 30 |             return Ok(Command::Up(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02b/src/main.rs:58:23
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let command = line.parse::<Command>().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:12:53
[INFO] [stdout]    |
[INFO] [stdout] 12 |       fn from_str(s: &str) -> Result<Self, Self::Err> {
[INFO] [stdout]    |  _____________________________________________________^
[INFO] [stdout] 13 | |         if s.starts_with("f") {
[INFO] [stdout] 14 | |             let value = s.strip_prefix("forward ").unwrap().parse().unwrap();
[INFO] [stdout] 15 | |             return Ok(Command::Forward(value));
[INFO] [stdout] ...  |
[INFO] [stdout] 25 | |         unreachable!()
[INFO] [stdout] 26 | |     }
[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<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:15:20
[INFO] [stdout]    |
[INFO] [stdout] 15 |             return Ok(Command::Forward(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:19:20
[INFO] [stdout]    |
[INFO] [stdout] 19 |             return Ok(Command::Down(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:23:20
[INFO] [stdout]    |
[INFO] [stdout] 23 |             return Ok(Command::Up(value));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<Command, Infallible>
[INFO] [stdout]   --> day02a/src/main.rs:54:23
[INFO] [stdout]    |
[INFO] [stdout] 54 |         let command = line.parse::<Command>().unwrap();
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `day02b` (bin "day02b") due to 5 previous errors
[INFO] [stderr] error: could not compile `day02a` (bin "day02a") due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "a8dcbe820ad8e9164aadbc42e2f5421507c72feed737cf6861fb3ca6939abbfd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8dcbe820ad8e9164aadbc42e2f5421507c72feed737cf6861fb3ca6939abbfd", kill_on_drop: false }`
[INFO] [stdout] a8dcbe820ad8e9164aadbc42e2f5421507c72feed737cf6861fb3ca6939abbfd