[INFO] fetching crate tower-layer 0.3.1...
[INFO] checking tower-layer-0.3.1 against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] extracting crate tower-layer 0.3.1 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate tower-layer 0.3.1 on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tower-layer 0.3.1
[INFO] finished tweaking crates.io crate tower-layer 0.3.1
[INFO] tweaked toml for crates.io crate tower-layer 0.3.1 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tower-buffer v0.3.0
[INFO] [stderr]   Downloaded tower-retry v0.3.0
[INFO] [stderr]   Downloaded tower-timeout v0.3.0
[INFO] [stderr]   Downloaded tower-load v0.3.0
[INFO] [stderr]   Downloaded tower-limit v0.3.1
[INFO] [stderr]   Downloaded tower-load-shed v0.3.0
[INFO] [stderr]   Downloaded tower-util v0.3.1
[INFO] [stderr]   Downloaded tower v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9787426ed1b1d10fd666238b99cf7643842be3f56d0dc54ed9425cf3d321c3b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e9787426ed1b1d10fd666238b99cf7643842be3f56d0dc54ed9425cf3d321c3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9787426ed1b1d10fd666238b99cf7643842be3f56d0dc54ed9425cf3d321c3b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9787426ed1b1d10fd666238b99cf7643842be3f56d0dc54ed9425cf3d321c3b", kill_on_drop: false }`
[INFO] [stdout] e9787426ed1b1d10fd666238b99cf7643842be3f56d0dc54ed9425cf3d321c3b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c46a2d1a26fb48b37929c74ca49dd9409f2375a0a3bdb8fe07617f3ffccaa889" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 94676b263e1e60e277bb66df65659e6b16700aabad5475341100e0ab556f6cec
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "94676b263e1e60e277bb66df65659e6b16700aabad5475341100e0ab556f6cec", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking tower-layer v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]    Compiling pin-project-internal v0.4.28
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking pin-project v0.4.28
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 31.89s
[INFO] running `Command { std: "docker" "inspect" "94676b263e1e60e277bb66df65659e6b16700aabad5475341100e0ab556f6cec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "94676b263e1e60e277bb66df65659e6b16700aabad5475341100e0ab556f6cec", kill_on_drop: false }`
[INFO] [stdout] 94676b263e1e60e277bb66df65659e6b16700aabad5475341100e0ab556f6cec