[INFO] fetching crate byte 0.2.7...
[INFO] checking byte-0.2.7 against try#c387b04bf028733cd561d62128c8a5eee4bc1458+rustflags=-Dtail_expr_drop_order for pr-130930
[INFO] extracting crate byte 0.2.7 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate byte 0.2.7 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 byte 0.2.7
[INFO] finished tweaking crates.io crate byte 0.2.7
[INFO] tweaked toml for crates.io crate byte 0.2.7 written to /workspace/builds/worker-3-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 25 packages to latest compatible versions
[INFO] [stderr]       Adding aho-corasick v0.5.3 (available: v1.1.3)
[INFO] [stderr]       Adding env_logger v0.3.5 (available: v0.11.5)
[INFO] [stderr]       Adding log v0.3.9 (available: v0.4.22)
[INFO] [stderr]       Adding memchr v0.1.11 (available: v2.7.4)
[INFO] [stderr]       Adding quickcheck v0.3.2 (available: v1.0.3)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.8.5)
[INFO] [stderr]       Adding rand v0.4.6 (available: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (available: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (available: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (available: v0.8.3)
[INFO] [stderr]       Adding regex v0.1.80 (available: v1.10.6)
[INFO] [stderr]       Adding regex-syntax v0.3.9 (available: v0.8.4)
[INFO] [stderr]       Adding thread-id v2.0.0 (available: v4.2.2)
[INFO] [stderr]       Adding thread_local v0.2.7 (available: v1.1.8)
[INFO] [stderr]       Adding utf8-ranges v0.1.3 (available: v1.0.5)
[INFO] [stderr]       Adding winapi v0.2.8 (available: v0.3.9)
[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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] f0d9c57bc2c3eb11a44c29555374f8e351c722f90f17c6ba13af0419b86134be
[INFO] running `Command { std: "docker" "start" "-a" "f0d9c57bc2c3eb11a44c29555374f8e351c722f90f17c6ba13af0419b86134be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f0d9c57bc2c3eb11a44c29555374f8e351c722f90f17c6ba13af0419b86134be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0d9c57bc2c3eb11a44c29555374f8e351c722f90f17c6ba13af0419b86134be", kill_on_drop: false }`
[INFO] [stdout] f0d9c57bc2c3eb11a44c29555374f8e351c722f90f17c6ba13af0419b86134be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 5af027ac9750b8b933e0b30e4951b662ce78af2bce2f31c442854a7b3b9a9d08
[INFO] running `Command { std: "docker" "start" "-a" "5af027ac9750b8b933e0b30e4951b662ce78af2bce2f31c442854a7b3b9a9d08", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking byte v0.2.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stderr]     Checking quickcheck v0.3.2
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:335:17
[INFO] [stdout]     |
[INFO] [stdout] 335 |     fn try_read(bytes: &'a [u8], _ctx: ()) -> Result<(Self, usize)> {
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `bytes`
[INFO] [stdout]    --> tests/lib.rs:341:24
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn try_write(self, bytes: &mut [u8], _ctx: ()) -> Result<usize> {
[INFO] [stdout]     |                        ^^^^^ help: if this is intentional, prefix it with an underscore: `_bytes`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.31s
[INFO] running `Command { std: "docker" "inspect" "5af027ac9750b8b933e0b30e4951b662ce78af2bce2f31c442854a7b3b9a9d08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5af027ac9750b8b933e0b30e4951b662ce78af2bce2f31c442854a7b3b9a9d08", kill_on_drop: false }`
[INFO] [stdout] 5af027ac9750b8b933e0b30e4951b662ce78af2bce2f31c442854a7b3b9a9d08