[INFO] fetching crate buffered-reader 1.3.1...
[INFO] checking buffered-reader-1.3.1 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate buffered-reader 1.3.1 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate buffered-reader 1.3.1 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 buffered-reader 1.3.1
[INFO] finished tweaking crates.io crate buffered-reader 1.3.1
[INFO] tweaked toml for crates.io crate buffered-reader 1.3.1 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c387b04bf028733cd561d62128c8a5eee4bc1458" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 12 packages to latest compatible versions
[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] 12e7ce3ae8acc576bfee9372526dcb59245271daac66b6b5dbede0a83458420c
[INFO] running `Command { std: "docker" "start" "-a" "12e7ce3ae8acc576bfee9372526dcb59245271daac66b6b5dbede0a83458420c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "12e7ce3ae8acc576bfee9372526dcb59245271daac66b6b5dbede0a83458420c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "12e7ce3ae8acc576bfee9372526dcb59245271daac66b6b5dbede0a83458420c", kill_on_drop: false }`
[INFO] [stdout] 12e7ce3ae8acc576bfee9372526dcb59245271daac66b6b5dbede0a83458420c
[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] f63d51ecab20dd3e40c5cb347b5c34dcb2bda536f10d0f020f8e495ea5965ce1
[INFO] running `Command { std: "docker" "start" "-a" "f63d51ecab20dd3e40c5cb347b5c34dcb2bda536f10d0f020f8e495ea5965ce1", kill_on_drop: false }`
[INFO] [stderr]    Compiling bzip2-sys v0.1.11+1.0.8
[INFO] [stderr]     Checking bzip2 v0.4.4
[INFO] [stderr]     Checking buffered-reader v1.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `MyStruct` is never constructed
[INFO] [stdout]    --> src/macros.rs:135:16
[INFO] [stdout]     |
[INFO] [stdout] 135 |     pub struct MyStruct {}
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `WithLifetime` is never constructed
[INFO] [stdout]    --> src/macros.rs:139:16
[INFO] [stdout]     |
[INFO] [stdout] 139 |     pub struct WithLifetime<'a> { _p: std::marker::PhantomData<&'a ()> }
[INFO] [stdout]     |                ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyWriter` is never constructed
[INFO] [stdout]    --> src/macros.rs:144:16
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub struct MyWriter<W: std::io::Write> { _p: std::marker::PhantomData<W> }
[INFO] [stdout]     |                ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyWriterWithLifetime` is never constructed
[INFO] [stdout]    --> src/macros.rs:153:16
[INFO] [stdout]     |
[INFO] [stdout] 153 |     pub struct MyWriterWithLifetime<'a, C, W: std::io::Write> {
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.00s
[INFO] running `Command { std: "docker" "inspect" "f63d51ecab20dd3e40c5cb347b5c34dcb2bda536f10d0f020f8e495ea5965ce1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f63d51ecab20dd3e40c5cb347b5c34dcb2bda536f10d0f020f8e495ea5965ce1", kill_on_drop: false }`
[INFO] [stdout] f63d51ecab20dd3e40c5cb347b5c34dcb2bda536f10d0f020f8e495ea5965ce1