[INFO] fetching crate reference-counted-singleton 0.1.1...
[INFO] checking reference-counted-singleton-0.1.1 against try#39e1293fce4b650061e85dda88aa428f726a8444 for pr-88041
[INFO] extracting crate reference-counted-singleton 0.1.1 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate reference-counted-singleton 0.1.1 on toolchain 39e1293fce4b650061e85dda88aa428f726a8444
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reference-counted-singleton 0.1.1
[INFO] finished tweaking crates.io crate reference-counted-singleton 0.1.1
[INFO] tweaked toml for crates.io crate reference-counted-singleton 0.1.1 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2d97c7fd0b4dd1deaf64199fbe184893d3e2d0736b2311c29a3554acfe55a28f
[INFO] running `Command { std: "docker" "start" "-a" "2d97c7fd0b4dd1deaf64199fbe184893d3e2d0736b2311c29a3554acfe55a28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2d97c7fd0b4dd1deaf64199fbe184893d3e2d0736b2311c29a3554acfe55a28f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d97c7fd0b4dd1deaf64199fbe184893d3e2d0736b2311c29a3554acfe55a28f", kill_on_drop: false }`
[INFO] [stdout] 2d97c7fd0b4dd1deaf64199fbe184893d3e2d0736b2311c29a3554acfe55a28f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+39e1293fce4b650061e85dda88aa428f726a8444" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce6ee61b77edd03bcaa660214c386068a78a973d2ff8e0158e4b477623ef664f
[INFO] running `Command { std: "docker" "start" "-a" "ce6ee61b77edd03bcaa660214c386068a78a973d2ff8e0158e4b477623ef664f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking reference-counted-singleton v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]     Checking instant v0.1.10
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]    Compiling serial_test_derive v0.5.1
[INFO] [stderr]     Checking serial_test v0.5.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.05s
[INFO] running `Command { std: "docker" "inspect" "ce6ee61b77edd03bcaa660214c386068a78a973d2ff8e0158e4b477623ef664f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce6ee61b77edd03bcaa660214c386068a78a973d2ff8e0158e4b477623ef664f", kill_on_drop: false }`
[INFO] [stdout] ce6ee61b77edd03bcaa660214c386068a78a973d2ff8e0158e4b477623ef664f