[INFO] fetching crate matter-cli 0.1.0-alpha1...
[INFO] testing matter-cli-0.1.0-alpha1 against try#b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b for pr-145330-1
[INFO] extracting crate matter-cli 0.1.0-alpha1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate matter-cli 0.1.0-alpha1
[INFO] finished tweaking crates.io crate matter-cli 0.1.0-alpha1
[INFO] tweaked toml for crates.io crate matter-cli 0.1.0-alpha1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate matter-cli 0.1.0-alpha1 on toolchain b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 53 packages to latest compatible versions
[INFO] [stderr]       Adding matter v0.1.0-alpha3 (available: v0.1.0-alpha4)
[INFO] [stderr]       Adding structopt v0.2.18 (available: v0.3.26)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df6d1cc42ad4a12f6a911c225a7117bba99d89d5e54269d8d3ae3642f98fb1ff
[INFO] running `Command { std: "docker" "start" "-a" "df6d1cc42ad4a12f6a911c225a7117bba99d89d5e54269d8d3ae3642f98fb1ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df6d1cc42ad4a12f6a911c225a7117bba99d89d5e54269d8d3ae3642f98fb1ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df6d1cc42ad4a12f6a911c225a7117bba99d89d5e54269d8d3ae3642f98fb1ff", kill_on_drop: false }`
[INFO] [stdout] df6d1cc42ad4a12f6a911c225a7117bba99d89d5e54269d8d3ae3642f98fb1ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b6ae10aa7319b7ebb6c7b3331dd71a9d6c9c5b4b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40c94974da5ede4415bcd74fc4261c5ac0d683e36d76050692a31c7f770db4f7
[INFO] running `Command { std: "docker" "start" "-a" "40c94974da5ede4415bcd74fc4261c5ac0d683e36d76050692a31c7f770db4f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling toml v0.5.11
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling serde_yaml v0.8.26
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling matter v0.1.0-alpha3
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling matter-cli v0.1.0-alpha1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |     match matter::extract(&contents) {
[INFO] [stdout]    |           -------------------------- this expression has type `Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout] 32 |         Some((matter, content)) => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ expected `Result<Option<(String, String)>, Error>`, found `Option<_>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] help: try wrapping the pattern in `Ok`
[INFO] [stdout]    |
[INFO] [stdout] 32 |         Ok(Some((matter, content))) => {
[INFO] [stdout]    |         +++                       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `matter-cli` (bin "matter") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "40c94974da5ede4415bcd74fc4261c5ac0d683e36d76050692a31c7f770db4f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40c94974da5ede4415bcd74fc4261c5ac0d683e36d76050692a31c7f770db4f7", kill_on_drop: false }`
[INFO] [stdout] 40c94974da5ede4415bcd74fc4261c5ac0d683e36d76050692a31c7f770db4f7