[INFO] fetching crate kf-protocol-api 2.0.0...
[INFO] checking kf-protocol-api-2.0.0 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174
[INFO] extracting crate kf-protocol-api 2.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate kf-protocol-api 2.0.0 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kf-protocol-api 2.0.0
[INFO] finished tweaking crates.io crate kf-protocol-api 2.0.0
[INFO] tweaked toml for crates.io crate kf-protocol-api 2.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a0c3542445cd0e328d1691f493a9937d672f275dce8af3be99ca3432cb72d23d
[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" "a0c3542445cd0e328d1691f493a9937d672f275dce8af3be99ca3432cb72d23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a0c3542445cd0e328d1691f493a9937d672f275dce8af3be99ca3432cb72d23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a0c3542445cd0e328d1691f493a9937d672f275dce8af3be99ca3432cb72d23d", kill_on_drop: false }`
[INFO] [stdout] a0c3542445cd0e328d1691f493a9937d672f275dce8af3be99ca3432cb72d23d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "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] 327286ebf64e5dc34ee6a6b2f19fb73bd8adfd974fc28e3676790a2ca2284462
[INFO] running `Command { std: "docker" "start" "-a" "327286ebf64e5dc34ee6a6b2f19fb73bd8adfd974fc28e3676790a2ca2284462", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling log v0.4.13
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking pin-project-lite v0.2.4
[INFO] [stderr]    Compiling crc32c v0.5.0
[INFO] [stderr]     Checking ansi_term v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]     Checking regex v1.4.3
[INFO] [stderr]     Checking sharded-slab v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking content_inspector v0.2.4
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling serde_derive v1.0.123
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]    Compiling kf-protocol-derive v0.2.0
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]     Checking kf-protocol-core v0.1.2
[INFO] [stderr]     Checking tracing-subscriber v0.2.15
[INFO] [stderr]     Checking flv-util v0.4.0
[INFO] [stderr]     Checking kf-protocol-api v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 17s
[INFO] running `Command { std: "docker" "inspect" "327286ebf64e5dc34ee6a6b2f19fb73bd8adfd974fc28e3676790a2ca2284462", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "327286ebf64e5dc34ee6a6b2f19fb73bd8adfd974fc28e3676790a2ca2284462", kill_on_drop: false }`
[INFO] [stdout] 327286ebf64e5dc34ee6a6b2f19fb73bd8adfd974fc28e3676790a2ca2284462