[INFO] fetching crate puff 0.1.7...
[INFO] checking puff-0.1.7 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate puff 0.1.7 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate puff 0.1.7 on toolchain c387b04bf028733cd561d62128c8a5eee4bc1458
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate puff 0.1.7
[INFO] finished tweaking crates.io crate puff 0.1.7
[INFO] tweaked toml for crates.io crate puff 0.1.7 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] crate crates.io crate puff 0.1.7 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" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9d8e1b1cf0b9fc9a876b28d19ec8ca05fe941554c600aa0c1a5fee4c0820a7b
[INFO] running `Command { std: "docker" "start" "-a" "f9d8e1b1cf0b9fc9a876b28d19ec8ca05fe941554c600aa0c1a5fee4c0820a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9d8e1b1cf0b9fc9a876b28d19ec8ca05fe941554c600aa0c1a5fee4c0820a7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9d8e1b1cf0b9fc9a876b28d19ec8ca05fe941554c600aa0c1a5fee4c0820a7b", kill_on_drop: false }`
[INFO] [stdout] f9d8e1b1cf0b9fc9a876b28d19ec8ca05fe941554c600aa0c1a5fee4c0820a7b
[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 -Dtail_expr_drop_order" "-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@sha256:6252d7ea7fb8caaf7af6d800c5fb250a9cd862b9a7f9508afb3c54fa7fe1102e" "/opt/rustwide/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e8d707cabe864fa3d89423708e4103c592c44f464d74d4136f32f30824ab7b8e
[INFO] running `Command { std: "docker" "start" "-a" "e8d707cabe864fa3d89423708e4103c592c44f464d74d4136f32f30824ab7b8e", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling syn v1.0.85
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling serde_derive v1.0.133
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.74
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking fastrand v1.6.0
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking symlink v0.1.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]    Compiling quote v1.0.14
[INFO] [stderr]     Checking directories v4.0.1
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking structopt v0.3.25
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking puff v0.1.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> src/error.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AppError(pub(crate) String);
[INFO] [stdout]   |            -------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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 `0` is never read
[INFO] [stdout]  --> src/error.rs:4:21
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct AppError(pub(crate) String);
[INFO] [stdout]   |            -------- ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |            |
[INFO] [stdout]   |            field in this struct
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider removing this field
[INFO] [stdout]   = note: `AppError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[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` profile [unoptimized + debuginfo] target(s) in 14.49s
[INFO] running `Command { std: "docker" "inspect" "e8d707cabe864fa3d89423708e4103c592c44f464d74d4136f32f30824ab7b8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e8d707cabe864fa3d89423708e4103c592c44f464d74d4136f32f30824ab7b8e", kill_on_drop: false }`
[INFO] [stdout] e8d707cabe864fa3d89423708e4103c592c44f464d74d4136f32f30824ab7b8e