[INFO] fetching crate discard-while 0.1.6...
[INFO] checking discard-while-0.1.6 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate discard-while 0.1.6 into /workspace/builds/worker-4-tc2/source
[INFO] validating manifest of crates.io crate discard-while 0.1.6 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate discard-while 0.1.6
[INFO] finished tweaking crates.io crate discard-while 0.1.6
[INFO] tweaked toml for crates.io crate discard-while 0.1.6 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" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e73aa7de49b1d34df3be6ce370a6fd897dabe046cdd8b16fbe6101f54365d726
[INFO] running `Command { std: "docker" "start" "-a" "e73aa7de49b1d34df3be6ce370a6fd897dabe046cdd8b16fbe6101f54365d726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e73aa7de49b1d34df3be6ce370a6fd897dabe046cdd8b16fbe6101f54365d726", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e73aa7de49b1d34df3be6ce370a6fd897dabe046cdd8b16fbe6101f54365d726", kill_on_drop: false }`
[INFO] [stdout] e73aa7de49b1d34df3be6ce370a6fd897dabe046cdd8b16fbe6101f54365d726
[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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 46aeb46c07f7ee2a7d29fc433191b8a9cb0a80e2c11fbce9fd61f783b41cb5de
[INFO] running `Command { std: "docker" "start" "-a" "46aeb46c07f7ee2a7d29fc433191b8a9cb0a80e2c11fbce9fd61f783b41cb5de", kill_on_drop: false }`
[INFO] [stderr]     Checking discard-while v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "46aeb46c07f7ee2a7d29fc433191b8a9cb0a80e2c11fbce9fd61f783b41cb5de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "46aeb46c07f7ee2a7d29fc433191b8a9cb0a80e2c11fbce9fd61f783b41cb5de", kill_on_drop: false }`
[INFO] [stdout] 46aeb46c07f7ee2a7d29fc433191b8a9cb0a80e2c11fbce9fd61f783b41cb5de