[INFO] fetching crate trait-ffi 0.2.8...
[INFO] building trait-ffi-0.2.8 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate trait-ffi 0.2.8 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate trait-ffi 0.2.8
[INFO] finished tweaking crates.io crate trait-ffi 0.2.8
[INFO] tweaked toml for crates.io crate trait-ffi 0.2.8 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate trait-ffi 0.2.8 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 trait-ffi 0.2.8 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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] ffab1dd92b6d03175ed21772bcbbb5d052ccd773444fef7f59b0dcb93d2cbea2
[INFO] running `Command { std: "docker" "start" "-a" "ffab1dd92b6d03175ed21772bcbbb5d052ccd773444fef7f59b0dcb93d2cbea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ffab1dd92b6d03175ed21772bcbbb5d052ccd773444fef7f59b0dcb93d2cbea2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ffab1dd92b6d03175ed21772bcbbb5d052ccd773444fef7f59b0dcb93d2cbea2", kill_on_drop: false }`
[INFO] [stdout] ffab1dd92b6d03175ed21772bcbbb5d052ccd773444fef7f59b0dcb93d2cbea2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 979dfd50a2a3bcc8b58224eee958dfebd150854621b6cae8733f3a94841be151
[INFO] running `Command { std: "docker" "start" "-a" "979dfd50a2a3bcc8b58224eee958dfebd150854621b6cae8733f3a94841be151", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling lenient_semver_version_builder v0.4.2
[INFO] [stderr]    Compiling syn v2.0.104
[INFO] [stderr]    Compiling lenient_semver_parser v0.4.2
[INFO] [stderr]    Compiling lenient_semver v0.4.2
[INFO] [stderr]    Compiling convert_case v0.8.0
[INFO] [stderr]    Compiling trait-ffi v0.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `warn_fn_name`
[INFO] [stdout]    --> src/lib.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let warn_fn_name = format_ident!(
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_warn_fn_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.83s
[INFO] running `Command { std: "docker" "inspect" "979dfd50a2a3bcc8b58224eee958dfebd150854621b6cae8733f3a94841be151", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "979dfd50a2a3bcc8b58224eee958dfebd150854621b6cae8733f3a94841be151", kill_on_drop: false }`
[INFO] [stdout] 979dfd50a2a3bcc8b58224eee958dfebd150854621b6cae8733f3a94841be151
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6eab5429fb1812e5ed2ecb86c0d46955e9fbdec4833138b1a5879f7e165313cd
[INFO] running `Command { std: "docker" "start" "-a" "6eab5429fb1812e5ed2ecb86c0d46955e9fbdec4833138b1a5879f7e165313cd", kill_on_drop: false }`
[INFO] [stderr]    Compiling trait-ffi v0.2.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `warn_fn_name`
[INFO] [stdout]    --> src/lib.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let warn_fn_name = format_ident!(
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_warn_fn_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `warn_fn_name`
[INFO] [stdout]    --> src/lib.rs:185:9
[INFO] [stdout]     |
[INFO] [stdout] 185 |     let warn_fn_name = format_ident!(
[INFO] [stdout]     |         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_warn_fn_name`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.53s
[INFO] running `Command { std: "docker" "inspect" "6eab5429fb1812e5ed2ecb86c0d46955e9fbdec4833138b1a5879f7e165313cd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6eab5429fb1812e5ed2ecb86c0d46955e9fbdec4833138b1a5879f7e165313cd", kill_on_drop: false }`
[INFO] [stdout] 6eab5429fb1812e5ed2ecb86c0d46955e9fbdec4833138b1a5879f7e165313cd