[INFO] fetching crate regex-syntax 0.6.25...
[INFO] checking regex-syntax-0.6.25 against master#db1fb85cff63ad5fffe435e17128f99f9e1d970c for pr-89056
[INFO] extracting crate regex-syntax 0.6.25 into /workspace/builds/worker-107/source
[INFO] validating manifest of crates.io crate regex-syntax 0.6.25 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 regex-syntax 0.6.25
[INFO] finished tweaking crates.io crate regex-syntax 0.6.25
[INFO] tweaked toml for crates.io crate regex-syntax 0.6.25 written to /workspace/builds/worker-107/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] 99de327baa3455175d2d6933e1372b5f1a68fc8363bd48d19529472d55131caf
[INFO] running `Command { std: "docker" "start" "-a" "99de327baa3455175d2d6933e1372b5f1a68fc8363bd48d19529472d55131caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "99de327baa3455175d2d6933e1372b5f1a68fc8363bd48d19529472d55131caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99de327baa3455175d2d6933e1372b5f1a68fc8363bd48d19529472d55131caf", kill_on_drop: false }`
[INFO] [stdout] 99de327baa3455175d2d6933e1372b5f1a68fc8363bd48d19529472d55131caf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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] d46abc56f46db0bf1d579c7e62939bb2db2a7f520d12fecd4d16152424cae853
[INFO] running `Command { std: "docker" "start" "-a" "d46abc56f46db0bf1d579c7e62939bb2db2a7f520d12fecd4d16152424cae853", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking regex-syntax v0.6.25 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field is never read: `printer`
[INFO] [stdout]   --> src/ast/print.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     printer: &'p mut Printer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `printer`
[INFO] [stdout]   --> src/hir/print.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     printer: &'p mut Printer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `printer`
[INFO] [stdout]   --> src/ast/print.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     printer: &'p mut Printer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `printer`
[INFO] [stdout]   --> src/hir/print.rs:74:5
[INFO] [stdout]    |
[INFO] [stdout] 74 |     printer: &'p mut Printer,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.51s
[INFO] running `Command { std: "docker" "inspect" "d46abc56f46db0bf1d579c7e62939bb2db2a7f520d12fecd4d16152424cae853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d46abc56f46db0bf1d579c7e62939bb2db2a7f520d12fecd4d16152424cae853", kill_on_drop: false }`
[INFO] [stdout] d46abc56f46db0bf1d579c7e62939bb2db2a7f520d12fecd4d16152424cae853