[INFO] fetching crate matter-cli 0.1.0-alpha1...
[INFO] testing matter-cli-0.1.0-alpha1 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate matter-cli 0.1.0-alpha1 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate matter-cli 0.1.0-alpha1 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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-107/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e5464b41ab66238c12b1cdb021d257bc73e41ba97bf9b4606d9c2cee4bb5805d
[INFO] running `Command { std: "docker" "start" "-a" "e5464b41ab66238c12b1cdb021d257bc73e41ba97bf9b4606d9c2cee4bb5805d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e5464b41ab66238c12b1cdb021d257bc73e41ba97bf9b4606d9c2cee4bb5805d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5464b41ab66238c12b1cdb021d257bc73e41ba97bf9b4606d9c2cee4bb5805d", kill_on_drop: false }`
[INFO] [stdout] e5464b41ab66238c12b1cdb021d257bc73e41ba97bf9b4606d9c2cee4bb5805d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad08c97f2560907a04bfa9e87cb7d42677db69a6c509dac002e5870b3cdf554c
[INFO] running `Command { std: "docker" "start" "-a" "ad08c97f2560907a04bfa9e87cb7d42677db69a6c509dac002e5870b3cdf554c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling linked-hash-map v0.5.4
[INFO] [stderr]    Compiling serde_json v1.0.71
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling yaml-rust v0.4.5
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde_yaml v0.8.21
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling structopt v0.2.18
[INFO] [stderr]    Compiling structopt v0.3.25
[INFO] [stderr]    Compiling thiserror v1.0.30
[INFO] [stderr]    Compiling matter v0.1.0-alpha3
[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 enum `Result`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[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` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ad08c97f2560907a04bfa9e87cb7d42677db69a6c509dac002e5870b3cdf554c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad08c97f2560907a04bfa9e87cb7d42677db69a6c509dac002e5870b3cdf554c", kill_on_drop: false }`
[INFO] [stdout] ad08c97f2560907a04bfa9e87cb7d42677db69a6c509dac002e5870b3cdf554c