[INFO] fetching crate matter-cli 0.1.0-alpha1...
[INFO] checking matter-cli-0.1.0-alpha1 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate matter-cli 0.1.0-alpha1 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate matter-cli 0.1.0-alpha1 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "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-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89808dfb9b62ae3cce22eb3f5c682229a9ced48b563fd7aaba88c5acfb5cc88b
[INFO] running `Command { std: "docker" "start" "-a" "89808dfb9b62ae3cce22eb3f5c682229a9ced48b563fd7aaba88c5acfb5cc88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89808dfb9b62ae3cce22eb3f5c682229a9ced48b563fd7aaba88c5acfb5cc88b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89808dfb9b62ae3cce22eb3f5c682229a9ced48b563fd7aaba88c5acfb5cc88b", kill_on_drop: false }`
[INFO] [stdout] 89808dfb9b62ae3cce22eb3f5c682229a9ced48b563fd7aaba88c5acfb5cc88b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3bda880d53eeac95157d8a9c5018d746fd45aa96b5f0e5bebee3589236fb14b1
[INFO] running `Command { std: "docker" "start" "-a" "3bda880d53eeac95157d8a9c5018d746fd45aa96b5f0e5bebee3589236fb14b1", kill_on_drop: false }`
[INFO] [stderr] Blocking waiting for file lock on package cache
[INFO] [stderr] Compiling unicode-xid v0.2.2
[INFO] [stderr] Compiling version_check v0.9.3
[INFO] [stderr] Compiling syn v1.0.82
[INFO] [stderr] Compiling unicode-segmentation v1.8.0
[INFO] [stderr] Compiling proc-macro2 v0.4.30
[INFO] [stderr] Compiling unicode-xid v0.1.0
[INFO] [stderr] Compiling autocfg v1.0.1
[INFO] [stderr] Compiling memchr v2.4.1
[INFO] [stderr] Checking strsim v0.8.0
[INFO] [stderr] Checking vec_map v0.8.2
[INFO] [stderr] Checking ansi_term v0.11.0
[INFO] [stderr] Checking bitflags v1.3.2
[INFO] [stderr] Checking hashbrown v0.11.2
[INFO] [stderr] Checking linked-hash-map v0.5.4
[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 atty v0.2.14
[INFO] [stderr] Checking toml v0.5.8
[INFO] [stderr] Compiling proc-macro2 v1.0.32
[INFO] [stderr] Checking yaml-rust v0.4.5
[INFO] [stderr] Checking clap v2.33.3
[INFO] [stderr] Compiling heck v0.3.3
[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 quote v1.0.10
[INFO] [stderr] Checking aho-corasick v0.7.18
[INFO] [stderr] Compiling quote v0.6.13
[INFO] [stderr] Compiling syn v0.15.44
[INFO] [stderr] Checking serde_yaml v0.8.21
[INFO] [stderr] Checking regex v1.5.4
[INFO] [stderr] Compiling structopt-derive v0.2.18
[INFO] [stderr] Compiling thiserror-impl v1.0.30
[INFO] [stderr] Compiling structopt-derive v0.4.18
[INFO] [stderr] Checking structopt v0.2.18
[INFO] [stderr] Checking structopt v0.3.25
[INFO] [stderr] Checking thiserror v1.0.30
[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