[INFO] fetching crate observer 0.2.4...
[INFO] checking observer-0.2.4 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate observer 0.2.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate observer 0.2.4 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate observer 0.2.4
[INFO] finished tweaking crates.io crate observer 0.2.4
[INFO] tweaked toml for crates.io crate observer 0.2.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e6e586c6ed79d45f9c8eb0aab230f172fabbf5a30a8b307988b40e2b5a4bf91
[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" "4e6e586c6ed79d45f9c8eb0aab230f172fabbf5a30a8b307988b40e2b5a4bf91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e6e586c6ed79d45f9c8eb0aab230f172fabbf5a30a8b307988b40e2b5a4bf91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e6e586c6ed79d45f9c8eb0aab230f172fabbf5a30a8b307988b40e2b5a4bf91", kill_on_drop: false }`
[INFO] [stdout] 4e6e586c6ed79d45f9c8eb0aab230f172fabbf5a30a8b307988b40e2b5a4bf91
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d28e0453c3109ec06c3f59e6ee8f734701c954ced4b1c587e7d2c044e7e5d82c
[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" "d28e0453c3109ec06c3f59e6ee8f734701c954ced4b1c587e7d2c044e7e5d82c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.19
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.39
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling serde_derive v1.0.115
[INFO] [stderr]    Compiling serde v1.0.115
[INFO] [stderr]     Checking smallvec v1.4.2
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling serde_json v1.0.57
[INFO] [stderr]     Checking adler v0.2.3
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling num-integer v0.1.43
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking miniz_oxide v0.4.1
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking parking_lot_core v0.7.2
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking parking_lot v0.10.2
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking scheduled-thread-pool v0.2.5
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking ordered-float v1.1.0
[INFO] [stderr]    Compiling darling_core v0.9.0
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling darling_macro v0.9.0
[INFO] [stderr]    Compiling diesel_derives v1.4.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling darling v0.9.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking chrono v0.4.15
[INFO] [stderr]     Checking serde_yaml v0.8.13
[INFO] [stderr]     Checking serde-value v0.6.0
[INFO] [stderr]     Checking uuid v0.8.1
[INFO] [stderr]     Checking r2d2 v0.8.9
[INFO] [stderr]     Checking sqlparser v0.5.1
[INFO] [stderr]     Checking diesel v1.4.5
[INFO] [stderr]     Checking log4rs v0.11.0
[INFO] [stderr]    Compiling observer_attribute v0.1.8
[INFO] [stderr]     Checking r2d2-diesel v1.0.0
[INFO] [stderr]     Checking observer v0.2.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 56s
[INFO] running `Command { std: "docker" "inspect" "d28e0453c3109ec06c3f59e6ee8f734701c954ced4b1c587e7d2c044e7e5d82c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d28e0453c3109ec06c3f59e6ee8f734701c954ced4b1c587e7d2c044e7e5d82c", kill_on_drop: false }`
[INFO] [stdout] d28e0453c3109ec06c3f59e6ee8f734701c954ced4b1c587e7d2c044e7e5d82c