[INFO] fetching crate matter-cli 0.1.0-alpha1...
[INFO] checking matter-cli-0.1.0-alpha1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate matter-cli 0.1.0-alpha1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate matter-cli 0.1.0-alpha1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "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] [stderr] Downloading crates ...
[INFO] [stderr] Downloaded matter v0.1.0-alpha3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cf92e0b988f4ecdae25a69fd014c16da8210336c74dbae1b6dcd26f6ee0be442
[INFO] running `Command { std: "docker" "start" "-a" "cf92e0b988f4ecdae25a69fd014c16da8210336c74dbae1b6dcd26f6ee0be442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cf92e0b988f4ecdae25a69fd014c16da8210336c74dbae1b6dcd26f6ee0be442", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf92e0b988f4ecdae25a69fd014c16da8210336c74dbae1b6dcd26f6ee0be442", kill_on_drop: false }`
[INFO] [stdout] cf92e0b988f4ecdae25a69fd014c16da8210336c74dbae1b6dcd26f6ee0be442
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 867a8ed6467f7ded945ce5be2c7aaa28011baa995d1c18b0fc608a2872a18a06
[INFO] running `Command { std: "docker" "start" "-a" "867a8ed6467f7ded945ce5be2c7aaa28011baa995d1c18b0fc608a2872a18a06", 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] [stderr] Compiling proc-macro2 v1.0.28
[INFO] [stderr] Compiling unicode-xid v0.2.2
[INFO] [stderr] Compiling version_check v0.9.3
[INFO] [stderr] Compiling syn v1.0.74
[INFO] [stderr] Compiling libc v0.2.99
[INFO] [stderr] Compiling unicode-segmentation v1.8.0
[INFO] [stderr] Compiling serde v1.0.127
[INFO] [stderr] Compiling proc-macro2 v0.4.30
[INFO] [stderr] Checking unicode-width v0.1.8
[INFO] [stderr] Compiling memchr v2.4.0
[INFO] [stderr] Compiling unicode-xid v0.1.0
[INFO] [stderr] Checking vec_map v0.8.2
[INFO] [stderr] Checking ansi_term v0.11.0
[INFO] [stderr] Compiling ryu v1.0.5
[INFO] [stderr] Checking strsim v0.8.0
[INFO] [stderr] Compiling syn v0.15.44
[INFO] [stderr] Checking bitflags v1.3.1
[INFO] [stderr] Compiling serde_json v1.0.66
[INFO] [stderr] Checking linked-hash-map v0.5.4
[INFO] [stderr] Checking itoa v0.4.7
[INFO] [stderr] Checking regex-syntax v0.6.25
[INFO] [stderr] Checking dtoa v0.4.8
[INFO] [stderr] Checking lazy_static v1.4.0
[INFO] [stderr] Checking textwrap v0.11.0
[INFO] [stderr] Checking yaml-rust v0.4.5
[INFO] [stderr] Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr] Compiling proc-macro-error v1.0.4
[INFO] [stderr] Compiling heck v0.3.3
[INFO] [stderr] Checking aho-corasick v0.7.18
[INFO] [stderr] Compiling quote v0.6.13
[INFO] [stderr] Compiling quote v1.0.9
[INFO] [stderr] Checking atty v0.2.14
[INFO] [stderr] Checking clap v2.33.3
[INFO] [stderr] Checking regex v1.5.4
[INFO] [stderr] Compiling structopt-derive v0.2.18
[INFO] [stderr] Checking serde_yaml v0.8.17
[INFO] [stderr] Checking toml v0.5.8
[INFO] [stderr] Checking structopt v0.2.18
[INFO] [stderr] Compiling structopt-derive v0.4.15
[INFO] [stderr] Compiling thiserror-impl v1.0.26
[INFO] [stderr] Checking thiserror v1.0.26
[INFO] [stderr] Checking structopt v0.3.22
[INFO] [stderr] Checking matter v0.1.0-alpha3
[INFO] [stderr] Checking 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