[INFO] fetching crate fmt-derive 0.1.2...
[INFO] checking fmt-derive-0.1.2 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate fmt-derive 0.1.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate fmt-derive 0.1.2
[INFO] finished tweaking crates.io crate fmt-derive 0.1.2
[INFO] tweaked toml for crates.io crate fmt-derive 0.1.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fmt-derive 0.1.2 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 20 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c2db450f5b50496fa261bc7560ff9d4a3173cc452f86820860bd4507db38a6ef
[INFO] running `Command { std: "docker" "start" "-a" "c2db450f5b50496fa261bc7560ff9d4a3173cc452f86820860bd4507db38a6ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c2db450f5b50496fa261bc7560ff9d4a3173cc452f86820860bd4507db38a6ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2db450f5b50496fa261bc7560ff9d4a3173cc452f86820860bd4507db38a6ef", kill_on_drop: false }`
[INFO] [stdout] c2db450f5b50496fa261bc7560ff9d4a3173cc452f86820860bd4507db38a6ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cf278528131c8fb7e6fea47c7e99db8e9c04e987cb1902339f99f5029d3581a0
[INFO] running `Command { std: "docker" "start" "-a" "cf278528131c8fb7e6fea47c7e99db8e9c04e987cb1902339f99f5029d3581a0", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling toml_datetime v0.6.11
[INFO] [stderr]     Checking yansi v1.0.1
[INFO] [stderr]     Checking diff v0.1.13
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling toml_edit v0.22.27
[INFO] [stderr]     Checking pretty_assertions v1.4.1
[INFO] [stderr]    Compiling proc-macro-crate v3.3.0
[INFO] [stderr]    Compiling fmt-derive-proc v0.1.2
[INFO] [stderr]     Checking fmt-derive v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `float` is never read
[INFO] [stdout]  --> src/test/basic_union.rs:9:7
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub union UnionDebug {
[INFO] [stdout]   |               ---------- field in this union
[INFO] [stdout] 8 |         pub unsigned: u32,
[INFO] [stdout] 9 |         pub float: f32,
[INFO] [stdout]   |             ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `float` is never read
[INFO] [stdout]   --> src/test/basic_union.rs:15:7
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub union UnionDisplay {
[INFO] [stdout]    |               ------------ field in this union
[INFO] [stdout] 14 |         pub unsigned: u32,
[INFO] [stdout] 15 |         pub float: f32,
[INFO] [stdout]    |             ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.70s
[INFO] running `Command { std: "docker" "inspect" "cf278528131c8fb7e6fea47c7e99db8e9c04e987cb1902339f99f5029d3581a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cf278528131c8fb7e6fea47c7e99db8e9c04e987cb1902339f99f5029d3581a0", kill_on_drop: false }`
[INFO] [stdout] cf278528131c8fb7e6fea47c7e99db8e9c04e987cb1902339f99f5029d3581a0