[INFO] fetching crate matter-cli 0.1.0-alpha1...
[INFO] checking matter-cli-0.1.0-alpha1 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate matter-cli 0.1.0-alpha1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate matter-cli 0.1.0-alpha1 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", 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-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d74bd3b8e0f23620817bfe87a5e835f747c440b58be2474a5066790cbbe4340f
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d74bd3b8e0f23620817bfe87a5e835f747c440b58be2474a5066790cbbe4340f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d74bd3b8e0f23620817bfe87a5e835f747c440b58be2474a5066790cbbe4340f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d74bd3b8e0f23620817bfe87a5e835f747c440b58be2474a5066790cbbe4340f", kill_on_drop: false }`
[INFO] [stdout] d74bd3b8e0f23620817bfe87a5e835f747c440b58be2474a5066790cbbe4340f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44b9fa6b286455ad12adf9d6b75991972d7eb744007da9f98f0b19ae76c47420
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "44b9fa6b286455ad12adf9d6b75991972d7eb744007da9f98f0b19ae76c47420", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking linked-hash-map v0.5.3
[INFO] [stderr]     Checking dtoa v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking yaml-rust v0.4.4
[INFO] [stderr]     Checking regex v1.4.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking serde_yaml v0.8.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]    Compiling structopt-derive v0.2.18
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking matter v0.1.0-alpha3
[INFO] [stderr]     Checking structopt v0.2.18
[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 `std::result::Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout] 32 |         Some((matter, content)) => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::result::Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout]               found enum `Option<_>`
[INFO] [stdout] 
[INFO] [stdout] 
[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 `std::result::Result<Option<(String, String)>, matter::Error>`
[INFO] [stdout] 32 |         Some((matter, content)) => {
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::result::Result`, found enum `Option`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::result::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] [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`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "44b9fa6b286455ad12adf9d6b75991972d7eb744007da9f98f0b19ae76c47420", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44b9fa6b286455ad12adf9d6b75991972d7eb744007da9f98f0b19ae76c47420", kill_on_drop: false }`
[INFO] [stdout] 44b9fa6b286455ad12adf9d6b75991972d7eb744007da9f98f0b19ae76c47420