[INFO] fetching crate tracing-core 0.1.34...
[INFO] building tracing-core-0.1.34 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate tracing-core 0.1.34 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate tracing-core 0.1.34
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate tracing-core 0.1.34
[INFO] tweaked toml for crates.io crate tracing-core 0.1.34 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tracing-core 0.1.34 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tracing-core 0.1.34 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8fd919faeba4476b9b2f7d0fb3c35c459fe3201bb2359522e8e314acc379928b
[INFO] running `Command { std: "docker" "start" "-a" "8fd919faeba4476b9b2f7d0fb3c35c459fe3201bb2359522e8e314acc379928b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8fd919faeba4476b9b2f7d0fb3c35c459fe3201bb2359522e8e314acc379928b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fd919faeba4476b9b2f7d0fb3c35c459fe3201bb2359522e8e314acc379928b", kill_on_drop: false }`
[INFO] [stdout] 8fd919faeba4476b9b2f7d0fb3c35c459fe3201bb2359522e8e314acc379928b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 226782d4a52f8b6d65b8181e31bb9115f051c55f0ffc9775c1b1045f56f340e8
[INFO] running `Command { std: "docker" "start" "-a" "226782d4a52f8b6d65b8181e31bb9115f051c55f0ffc9775c1b1045f56f340e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.34 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "226782d4a52f8b6d65b8181e31bb9115f051c55f0ffc9775c1b1045f56f340e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "226782d4a52f8b6d65b8181e31bb9115f051c55f0ffc9775c1b1045f56f340e8", kill_on_drop: false }`
[INFO] [stdout] 226782d4a52f8b6d65b8181e31bb9115f051c55f0ffc9775c1b1045f56f340e8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec3f2d34aff3bb80bf7ce9ee302a742df0ce378948c24eb0fc73d0b8585cc4fc
[INFO] running `Command { std: "docker" "start" "-a" "ec3f2d34aff3bb80bf7ce9ee302a742df0ce378948c24eb0fc73d0b8585cc4fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling tracing-core v0.1.34 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/field.rs:1238:63
[INFO] [stdout]      |
[INFO] [stdout] 1238 |             fn record_debug(&mut self, field: &Field, _: &dyn (crate::stdlib::fmt::Debug)) {
[INFO] [stdout]      |                                                               ^                         ^
[INFO] [stdout]      |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]     --> src/lib.rs:144:5
[INFO] [stdout]      |
[INFO] [stdout]  144 |     unused_parens,
[INFO] [stdout]      |     ^^^^^^^^^^^^^
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1238 -             fn record_debug(&mut self, field: &Field, _: &dyn (crate::stdlib::fmt::Debug)) {
[INFO] [stdout] 1238 +             fn record_debug(&mut self, field: &Field, _: &dyn crate::stdlib::fmt::Debug) {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/field.rs:1257:63
[INFO] [stdout]      |
[INFO] [stdout] 1257 |             fn record_debug(&mut self, field: &Field, _: &dyn (crate::stdlib::fmt::Debug)) {
[INFO] [stdout]      |                                                               ^                         ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1257 -             fn record_debug(&mut self, field: &Field, _: &dyn (crate::stdlib::fmt::Debug)) {
[INFO] [stdout] 1257 +             fn record_debug(&mut self, field: &Field, _: &dyn crate::stdlib::fmt::Debug) {
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "ec3f2d34aff3bb80bf7ce9ee302a742df0ce378948c24eb0fc73d0b8585cc4fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec3f2d34aff3bb80bf7ce9ee302a742df0ce378948c24eb0fc73d0b8585cc4fc", kill_on_drop: false }`
[INFO] [stdout] ec3f2d34aff3bb80bf7ce9ee302a742df0ce378948c24eb0fc73d0b8585cc4fc