[INFO] fetching crate mm0b_parser 0.1.4...
[INFO] checking mm0b_parser-0.1.4 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate mm0b_parser 0.1.4 into /workspace/builds/worker-77/source
[INFO] validating manifest of crates.io crate mm0b_parser 0.1.4 on toolchain db1fb85cff63ad5fffe435e17128f99f9e1d970c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mm0b_parser 0.1.4
[INFO] finished tweaking crates.io crate mm0b_parser 0.1.4
[INFO] tweaked toml for crates.io crate mm0b_parser 0.1.4 written to /workspace/builds/worker-77/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "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 zerocopy v0.5.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.3.0
[INFO] [stderr]   Downloaded mm0_util v0.1.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1912807d31130cf5dc5e401cc63ddd79c3c5546f2218f4938d183aab138a45ca
[INFO] running `Command { std: "docker" "start" "-a" "1912807d31130cf5dc5e401cc63ddd79c3c5546f2218f4938d183aab138a45ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1912807d31130cf5dc5e401cc63ddd79c3c5546f2218f4938d183aab138a45ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1912807d31130cf5dc5e401cc63ddd79c3c5546f2218f4938d183aab138a45ca", kill_on_drop: false }`
[INFO] [stdout] 1912807d31130cf5dc5e401cc63ddd79c3c5546f2218f4938d183aab138a45ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-77/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94cf652c053f7c2b0b8fe5f1f23e317cb308a8669a9b6b885a1364e1db518f45
[INFO] running `Command { std: "docker" "start" "-a" "94cf652c053f7c2b0b8fe5f1f23e317cb308a8669a9b6b885a1364e1db518f45", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking mm0_util v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling zerocopy-derive v0.3.0
[INFO] [stderr]     Checking zerocopy v0.5.0
[INFO] [stderr]     Checking mm0b_parser v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `buf`
[INFO] [stdout]     --> src/parser.rs:1020:3
[INFO] [stdout]      |
[INFO] [stdout] 1020 |   buf: &'a [u8],
[INFO] [stdout]      |   ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:18:3
[INFO] [stdout]      |
[INFO] [stdout] 18   |   unused,
[INFO] [stdout]      |   ^^^^^^
[INFO] [stdout]      = note: `#[warn(dead_code)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `buf`
[INFO] [stdout]     --> src/parser.rs:1020:3
[INFO] [stdout]      |
[INFO] [stdout] 1020 |   buf: &'a [u8],
[INFO] [stdout]      |   ^^^^^^^^^^^^^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:18:3
[INFO] [stdout]      |
[INFO] [stdout] 18   |   unused,
[INFO] [stdout]      |   ^^^^^^
[INFO] [stdout]      = note: `#[warn(dead_code)]` implied by `#[warn(unused)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.56s
[INFO] running `Command { std: "docker" "inspect" "94cf652c053f7c2b0b8fe5f1f23e317cb308a8669a9b6b885a1364e1db518f45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94cf652c053f7c2b0b8fe5f1f23e317cb308a8669a9b6b885a1364e1db518f45", kill_on_drop: false }`
[INFO] [stdout] 94cf652c053f7c2b0b8fe5f1f23e317cb308a8669a9b6b885a1364e1db518f45