[INFO] cloning repository https://github.com/mmcclimon/advent-2020
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmcclimon/advent-2020" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmcclimon%2Fadvent-2020", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmcclimon%2Fadvent-2020'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 62d36b472cab895d2f42f228218b5bd4140d92dd
[INFO] testing mmcclimon/advent-2020 against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmcclimon%2Fadvent-2020" "/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/mmcclimon/advent-2020
[INFO] finished tweaking git repo https://github.com/mmcclimon/advent-2020
[INFO] tweaked toml for git repo https://github.com/mmcclimon/advent-2020 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mmcclimon/advent-2020 on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mmcclimon/advent-2020 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8b0b11f308c66f6b115ab35ed471a0c744c6d430463330093298dcff944db6ce
[INFO] running `Command { std: "docker" "start" "-a" "8b0b11f308c66f6b115ab35ed471a0c744c6d430463330093298dcff944db6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8b0b11f308c66f6b115ab35ed471a0c744c6d430463330093298dcff944db6ce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8b0b11f308c66f6b115ab35ed471a0c744c6d430463330093298dcff944db6ce", kill_on_drop: false }`
[INFO] [stdout] 8b0b11f308c66f6b115ab35ed471a0c744c6d430463330093298dcff944db6ce
[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" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] 29e5d3f6b2301afdab2ab889258b4bb9bb3d1f364ded7ced42394616b257096e
[INFO] running `Command { std: "docker" "start" "-a" "29e5d3f6b2301afdab2ab889258b4bb9bb3d1f364ded7ced42394616b257096e", kill_on_drop: false }`
[INFO] [stderr]    Compiling advent v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/bin/day2.rs:38:31
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn from_str(line: &str) -> Result<Self> {
[INFO] [stdout]    |   --------------------------------------- this function returns a `Result`
[INFO] [stdout] 37 |     let mut bits = line.split(&['-', ' ', ':'][..]).filter(|s| !s.is_empty());
[INFO] [stdout] 38 |     let a: usize = bits.next()?.parse()?;
[INFO] [stdout]    |                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<Line, AdventError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/bin/day2.rs:39:31
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn from_str(line: &str) -> Result<Self> {
[INFO] [stdout]    |   --------------------------------------- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 39 |     let b: usize = bits.next()?.parse()?;
[INFO] [stdout]    |                               ^ use `.ok_or(...)?` to provide an error compatible with `Result<Line, AdventError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/bin/day2.rs:40:27
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn from_str(line: &str) -> Result<Self> {
[INFO] [stdout]    |   --------------------------------------- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 40 |     let want = bits.next()?.chars().next()?;
[INFO] [stdout]    |                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<Line, AdventError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/bin/day2.rs:40:43
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn from_str(line: &str) -> Result<Self> {
[INFO] [stdout]    |   --------------------------------------- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 40 |     let want = bits.next()?.chars().next()?;
[INFO] [stdout]    |                                           ^ use `.ok_or(...)?` to provide an error compatible with `Result<Line, AdventError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be used on `Result`s, not `Option`s, in a method that returns `Result`
[INFO] [stdout]   --> src/bin/day2.rs:41:25
[INFO] [stdout]    |
[INFO] [stdout] 36 |   fn from_str(line: &str) -> Result<Self> {
[INFO] [stdout]    |   --------------------------------------- this function returns a `Result`
[INFO] [stdout] ...
[INFO] [stdout] 41 |     let pw = bits.next()?.to_string();
[INFO] [stdout]    |                         ^ use `.ok_or(...)?` to provide an error compatible with `Result<Line, AdventError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `advent` (bin "day2") due to 5 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "29e5d3f6b2301afdab2ab889258b4bb9bb3d1f364ded7ced42394616b257096e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29e5d3f6b2301afdab2ab889258b4bb9bb3d1f364ded7ced42394616b257096e", kill_on_drop: false }`
[INFO] [stdout] 29e5d3f6b2301afdab2ab889258b4bb9bb3d1f364ded7ced42394616b257096e
