[INFO] fetching crate v_jsonescape 0.2.0...
[INFO] checking v_jsonescape-0.2.0 against master#c724b67e1b474262917a5154d74e7072267593fe for pr-74315
[INFO] extracting crate v_jsonescape 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate v_jsonescape 0.2.0 on toolchain c724b67e1b474262917a5154d74e7072267593fe
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate v_jsonescape 0.2.0
[INFO] finished tweaking crates.io crate v_jsonescape 0.2.0
[INFO] tweaked toml for crates.io crate v_jsonescape 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "fetch" "--locked" "--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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d770d3782fd87069a1f5a62c33682aa3ecb3366289aebd07b0e912d3acf3f871
[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" "d770d3782fd87069a1f5a62c33682aa3ecb3366289aebd07b0e912d3acf3f871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d770d3782fd87069a1f5a62c33682aa3ecb3366289aebd07b0e912d3acf3f871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d770d3782fd87069a1f5a62c33682aa3ecb3366289aebd07b0e912d3acf3f871", kill_on_drop: false }`
[INFO] [stdout] d770d3782fd87069a1f5a62c33682aa3ecb3366289aebd07b0e912d3acf3f871
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+c724b67e1b474262917a5154d74e7072267593fe" "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] 3245166744e1091dfbc0034db98fc9a224a10fdd1e6fd5078fc6505c064ddf16
[INFO] running `Command { std: "docker" "start" "-a" "3245166744e1091dfbc0034db98fc9a224a10fdd1e6fd5078fc6505c064ddf16", kill_on_drop: false }`
[INFO] [stderr]    Compiling v_escape v0.12.0
[INFO] [stderr]    Compiling v_jsonescape v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking buf-min v0.1.1
[INFO] [stderr]    Compiling v_escape_derive v0.8.1
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.81s
[INFO] running `Command { std: "docker" "inspect" "3245166744e1091dfbc0034db98fc9a224a10fdd1e6fd5078fc6505c064ddf16", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3245166744e1091dfbc0034db98fc9a224a10fdd1e6fd5078fc6505c064ddf16", kill_on_drop: false }`
[INFO] [stdout] 3245166744e1091dfbc0034db98fc9a224a10fdd1e6fd5078fc6505c064ddf16