[INFO] fetching crate cargo-llvm-cov 0.1.0-alpha.4...
[INFO] checking cargo-llvm-cov-0.1.0-alpha.4 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate cargo-llvm-cov 0.1.0-alpha.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate cargo-llvm-cov 0.1.0-alpha.4 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cargo-llvm-cov 0.1.0-alpha.4
[INFO] finished tweaking crates.io crate cargo-llvm-cov 0.1.0-alpha.4
[INFO] tweaked toml for crates.io crate cargo-llvm-cov 0.1.0-alpha.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate cargo-llvm-cov 0.1.0-alpha.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c61a1690e427c392423ed4feb0ef9fba6595ccb9aaab7b0cf1ad2c95edb8e87e
[INFO] running `Command { std: "docker" "start" "-a" "c61a1690e427c392423ed4feb0ef9fba6595ccb9aaab7b0cf1ad2c95edb8e87e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c61a1690e427c392423ed4feb0ef9fba6595ccb9aaab7b0cf1ad2c95edb8e87e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c61a1690e427c392423ed4feb0ef9fba6595ccb9aaab7b0cf1ad2c95edb8e87e", kill_on_drop: false }`
[INFO] [stdout] c61a1690e427c392423ed4feb0ef9fba6595ccb9aaab7b0cf1ad2c95edb8e87e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 76ec688fe01c708b9b817650edfa42327ae6d3d7023e7598aeb45e93123043aa
[INFO] running `Command { std: "docker" "start" "-a" "76ec688fe01c708b9b817650edfa42327ae6d3d7023e7598aeb45e93123043aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking same-file v1.0.6
[INFO] [stderr]     Checking rustc-demangle v0.1.19
[INFO] [stderr]     Checking shell-escape v0.1.5
[INFO] [stderr]     Checking glob v0.3.0
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]     Checking is_executable v1.0.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking tracing-core v0.1.18
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking shared_child v0.3.5
[INFO] [stderr]     Checking which v4.1.0
[INFO] [stderr]     Checking os_pipe v0.9.2
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking walkdir v2.3.2
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking duct v0.13.5
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking open v1.7.0
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.18
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling structopt-derive v0.4.14
[INFO] [stderr]     Checking structopt v0.3.21
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking cargo-platform v0.1.1
[INFO] [stderr]     Checking camino v1.0.4
[INFO] [stderr]     Checking semver v0.11.0
[INFO] [stderr]     Checking cargo_metadata v0.13.1
[INFO] [stderr]     Checking cargo-llvm-cov v0.1.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.46s
[INFO] running `Command { std: "docker" "inspect" "76ec688fe01c708b9b817650edfa42327ae6d3d7023e7598aeb45e93123043aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76ec688fe01c708b9b817650edfa42327ae6d3d7023e7598aeb45e93123043aa", kill_on_drop: false }`
[INFO] [stdout] 76ec688fe01c708b9b817650edfa42327ae6d3d7023e7598aeb45e93123043aa