[INFO] fetching crate butane_core 0.4.1...
[INFO] checking butane_core-0.4.1 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate butane_core 0.4.1 into /workspace/builds/worker-15/source
[INFO] validating manifest of crates.io crate butane_core 0.4.1 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 butane_core 0.4.1
[INFO] finished tweaking crates.io crate butane_core 0.4.1
[INFO] tweaked toml for crates.io crate butane_core 0.4.1 written to /workspace/builds/worker-15/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+db1fb85cff63ad5fffe435e17128f99f9e1d970c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] adf625e041de7039f9394c8e94f46ec33557b703c807c996112074085ebf54f9
[INFO] running `Command { std: "docker" "start" "-a" "adf625e041de7039f9394c8e94f46ec33557b703c807c996112074085ebf54f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "adf625e041de7039f9394c8e94f46ec33557b703c807c996112074085ebf54f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "adf625e041de7039f9394c8e94f46ec33557b703c807c996112074085ebf54f9", kill_on_drop: false }`
[INFO] [stdout] adf625e041de7039f9394c8e94f46ec33557b703c807c996112074085ebf54f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] f2e9bb2dfd3c7f0ba2bab5ac07d637e838f0321e6c4c9a3cb16eb314c4f1a934
[INFO] running `Command { std: "docker" "start" "-a" "f2e9bb2dfd3c7f0ba2bab5ac07d637e838f0321e6c4c9a3cb16eb314c4f1a934", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.29
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.76
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.130
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking hex v0.4.3
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking fs2 v0.4.3
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]    Compiling serde_derive v1.0.130
[INFO] [stderr]    Compiling pin-project-internal v1.0.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.29
[INFO] [stderr]     Checking thiserror v1.0.29
[INFO] [stderr]     Checking pin-project v1.0.8
[INFO] [stderr]     Checking serde_json v1.0.68
[INFO] [stderr]     Checking butane_core v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `ts`
[INFO] [stdout]    --> src/codegen/mod.rs:529:5
[INFO] [stdout]     |
[INFO] [stdout] 529 |     ts: TokenStream2,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `ts`
[INFO] [stdout]    --> src/codegen/mod.rs:529:5
[INFO] [stdout]     |
[INFO] [stdout] 529 |     ts: TokenStream2,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.36s
[INFO] running `Command { std: "docker" "inspect" "f2e9bb2dfd3c7f0ba2bab5ac07d637e838f0321e6c4c9a3cb16eb314c4f1a934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e9bb2dfd3c7f0ba2bab5ac07d637e838f0321e6c4c9a3cb16eb314c4f1a934", kill_on_drop: false }`
[INFO] [stdout] f2e9bb2dfd3c7f0ba2bab5ac07d637e838f0321e6c4c9a3cb16eb314c4f1a934