[INFO] fetching crate protocol 3.1.7...
[INFO] checking protocol-3.1.7 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate protocol 3.1.7 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate protocol 3.1.7 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate protocol 3.1.7
[INFO] removed 6 missing examples
[INFO] finished tweaking crates.io crate protocol 3.1.7
[INFO] tweaked toml for crates.io crate protocol 3.1.7 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate protocol 3.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e08254b6ce94741de10c73c13fe3643680c73cc52667125e00828da7c3ae77f
[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" "2e08254b6ce94741de10c73c13fe3643680c73cc52667125e00828da7c3ae77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e08254b6ce94741de10c73c13fe3643680c73cc52667125e00828da7c3ae77f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e08254b6ce94741de10c73c13fe3643680c73cc52667125e00828da7c3ae77f", kill_on_drop: false }`
[INFO] [stdout] 2e08254b6ce94741de10c73c13fe3643680c73cc52667125e00828da7c3ae77f
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4bb40bc0a38e34effaa8b5add3690bbc96b91ad4a06e2e8bd41f47a456f9a7f9
[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" "4bb40bc0a38e34effaa8b5add3690bbc96b91ad4a06e2e8bd41f47a456f9a7f9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.72
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling version_check v0.9.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking miniz_oxide v0.4.0
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]    Compiling error-chain v0.12.2
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]     Checking backtrace v0.3.50
[INFO] [stderr]     Checking flate2 v1.0.16
[INFO] [stderr]     Checking protocol v3.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling protocol-derive v3.1.7
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.45s
[INFO] running `Command { std: "docker" "inspect" "4bb40bc0a38e34effaa8b5add3690bbc96b91ad4a06e2e8bd41f47a456f9a7f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4bb40bc0a38e34effaa8b5add3690bbc96b91ad4a06e2e8bd41f47a456f9a7f9", kill_on_drop: false }`
[INFO] [stdout] 4bb40bc0a38e34effaa8b5add3690bbc96b91ad4a06e2e8bd41f47a456f9a7f9
