[INFO] fetching crate simple-semaphore 0.1.2...
[INFO] building simple-semaphore-0.1.2 against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] extracting crate simple-semaphore 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate simple-semaphore 0.1.2 on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-semaphore 0.1.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate simple-semaphore 0.1.2
[INFO] tweaked toml for crates.io crate simple-semaphore 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate simple-semaphore 0.1.2 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ab61e035196fe42cc62b93d08cc31c068cc52e81bd19c3a7f32a7ae7f6c64a3
[INFO] running `Command { std: "docker" "start" "-a" "7ab61e035196fe42cc62b93d08cc31c068cc52e81bd19c3a7f32a7ae7f6c64a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ab61e035196fe42cc62b93d08cc31c068cc52e81bd19c3a7f32a7ae7f6c64a3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ab61e035196fe42cc62b93d08cc31c068cc52e81bd19c3a7f32a7ae7f6c64a3", kill_on_drop: false }`
[INFO] [stdout] 7ab61e035196fe42cc62b93d08cc31c068cc52e81bd19c3a7f32a7ae7f6c64a3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 990fd2dd1ae05443327f6b168fe90ef2d40bf94d2f245a4ac428b003427f3090
[INFO] running `Command { std: "docker" "start" "-a" "990fd2dd1ae05443327f6b168fe90ef2d40bf94d2f245a4ac428b003427f3090", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.167
[INFO] [stderr]    Compiling num_cpus v1.16.0
[INFO] [stderr]    Compiling simple-semaphore v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "990fd2dd1ae05443327f6b168fe90ef2d40bf94d2f245a4ac428b003427f3090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "990fd2dd1ae05443327f6b168fe90ef2d40bf94d2f245a4ac428b003427f3090", kill_on_drop: false }`
[INFO] [stdout] 990fd2dd1ae05443327f6b168fe90ef2d40bf94d2f245a4ac428b003427f3090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0e51b09fb0b8f525d4e0cd872942d240db5a57e7a12c5d3d6da3f80f54ebdc75
[INFO] running `Command { std: "docker" "start" "-a" "0e51b09fb0b8f525d4e0cd872942d240db5a57e7a12c5d3d6da3f80f54ebdc75", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-semaphore v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "0e51b09fb0b8f525d4e0cd872942d240db5a57e7a12c5d3d6da3f80f54ebdc75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0e51b09fb0b8f525d4e0cd872942d240db5a57e7a12c5d3d6da3f80f54ebdc75", kill_on_drop: false }`
[INFO] [stdout] 0e51b09fb0b8f525d4e0cd872942d240db5a57e7a12c5d3d6da3f80f54ebdc75