[INFO] fetching crate reference-counted-singleton 0.1.4...
[INFO] checking reference-counted-singleton-0.1.4 against master#22572d0994593197593e2a1b7b18d720a9a349a7 for pr-126452-1
[INFO] extracting crate reference-counted-singleton 0.1.4 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate reference-counted-singleton 0.1.4 on toolchain 22572d0994593197593e2a1b7b18d720a9a349a7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reference-counted-singleton 0.1.4
[INFO] finished tweaking crates.io crate reference-counted-singleton 0.1.4
[INFO] tweaked toml for crates.io crate reference-counted-singleton 0.1.4 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 43 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] eaba1cee455b8438b7e291708a7f7baf5281e0090162c7ceee5dc5391685c38a
[INFO] running `Command { std: "docker" "start" "-a" "eaba1cee455b8438b7e291708a7f7baf5281e0090162c7ceee5dc5391685c38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eaba1cee455b8438b7e291708a7f7baf5281e0090162c7ceee5dc5391685c38a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaba1cee455b8438b7e291708a7f7baf5281e0090162c7ceee5dc5391685c38a", kill_on_drop: false }`
[INFO] [stdout] eaba1cee455b8438b7e291708a7f7baf5281e0090162c7ceee5dc5391685c38a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+22572d0994593197593e2a1b7b18d720a9a349a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02090de0544695956038f213829ba7beadbe057be41c3549fb324827b249c77c
[INFO] running `Command { std: "docker" "start" "-a" "02090de0544695956038f213829ba7beadbe057be41c3549fb324827b249c77c", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking sdd v3.0.2
[INFO] [stderr]    Compiling serial_test_derive v3.1.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking reference-counted-singleton v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking scc v2.1.16
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serial_test v3.1.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.33s
[INFO] running `Command { std: "docker" "inspect" "02090de0544695956038f213829ba7beadbe057be41c3549fb324827b249c77c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02090de0544695956038f213829ba7beadbe057be41c3549fb324827b249c77c", kill_on_drop: false }`
[INFO] [stdout] 02090de0544695956038f213829ba7beadbe057be41c3549fb324827b249c77c
[INFO] checking reference-counted-singleton-0.1.4 against try#6289438dbad80b1a0029c66dd3f6abf57c2c51be for pr-126452-1
[INFO] extracting crate reference-counted-singleton 0.1.4 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate reference-counted-singleton 0.1.4 on toolchain 6289438dbad80b1a0029c66dd3f6abf57c2c51be
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reference-counted-singleton 0.1.4
[INFO] finished tweaking crates.io crate reference-counted-singleton 0.1.4
[INFO] tweaked toml for crates.io crate reference-counted-singleton 0.1.4 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 43 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02b153a97b7360b2a4caab1dbdbaaea0e5541dd60d8a79da318ccea2f7a79305
[INFO] running `Command { std: "docker" "start" "-a" "02b153a97b7360b2a4caab1dbdbaaea0e5541dd60d8a79da318ccea2f7a79305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02b153a97b7360b2a4caab1dbdbaaea0e5541dd60d8a79da318ccea2f7a79305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02b153a97b7360b2a4caab1dbdbaaea0e5541dd60d8a79da318ccea2f7a79305", kill_on_drop: false }`
[INFO] [stdout] 02b153a97b7360b2a4caab1dbdbaaea0e5541dd60d8a79da318ccea2f7a79305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+6289438dbad80b1a0029c66dd3f6abf57c2c51be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 955230dc4841b9907b1a0ac4ffe9b8221e844a15c6d40e33abba5326668df8ff
[INFO] running `Command { std: "docker" "start" "-a" "955230dc4841b9907b1a0ac4ffe9b8221e844a15c6d40e33abba5326668df8ff", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking smallvec v1.13.2
[INFO] [stderr]     Checking sdd v3.0.2
[INFO] [stderr]    Compiling serial_test_derive v3.1.1
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking reference-counted-singleton v0.1.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-channel v0.3.30
[INFO] [stderr]     Checking parking_lot_core v0.9.10
[INFO] [stderr]     Checking scc v2.1.16
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking parking_lot v0.12.3
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Checking serial_test v3.1.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.55s
[INFO] running `Command { std: "docker" "inspect" "955230dc4841b9907b1a0ac4ffe9b8221e844a15c6d40e33abba5326668df8ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "955230dc4841b9907b1a0ac4ffe9b8221e844a15c6d40e33abba5326668df8ff", kill_on_drop: false }`
[INFO] [stdout] 955230dc4841b9907b1a0ac4ffe9b8221e844a15c6d40e33abba5326668df8ff