[INFO] fetching crate arcon_spec 0.1.3...
[INFO] checking arcon_spec-0.1.3 against master#936f2600b6c903b04387f74ed5cbce88bb06d243 for pr-91141
[INFO] extracting crate arcon_spec 0.1.3 into /workspace/builds/worker-21/source
[INFO] validating manifest of crates.io crate arcon_spec 0.1.3 on toolchain 936f2600b6c903b04387f74ed5cbce88bb06d243
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate arcon_spec 0.1.3
[INFO] finished tweaking crates.io crate arcon_spec 0.1.3
[INFO] tweaked toml for crates.io crate arcon_spec 0.1.3 written to /workspace/builds/worker-21/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 85f8223a1fa149f86447a9f0643b429b4c5e8e47e331d221b145d350efbdc521
[INFO] running `Command { std: "docker" "start" "-a" "85f8223a1fa149f86447a9f0643b429b4c5e8e47e331d221b145d350efbdc521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "85f8223a1fa149f86447a9f0643b429b4c5e8e47e331d221b145d350efbdc521", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85f8223a1fa149f86447a9f0643b429b4c5e8e47e331d221b145d350efbdc521", kill_on_drop: false }`
[INFO] [stdout] 85f8223a1fa149f86447a9f0643b429b4c5e8e47e331d221b145d350efbdc521
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-21/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+936f2600b6c903b04387f74ed5cbce88bb06d243" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d0609094f61068c3bc5f712073de5b730e49626d61f661827f70a076b8450bfe
[INFO] running `Command { std: "docker" "start" "-a" "d0609094f61068c3bc5f712073de5b730e49626d61f661827f70a076b8450bfe", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling syn v1.0.82
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking gimli v0.26.1
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.21
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking itoa v0.3.4
[INFO] [stderr]     Checking dtoa v0.4.8
[INFO] [stderr]     Checking serde v0.9.15
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]    Compiling backtrace v0.3.63
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking serde_json v0.9.10
[INFO] [stderr]     Checking addr2line v0.17.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking arcon_spec v0.1.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 18.38s
[INFO] running `Command { std: "docker" "inspect" "d0609094f61068c3bc5f712073de5b730e49626d61f661827f70a076b8450bfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0609094f61068c3bc5f712073de5b730e49626d61f661827f70a076b8450bfe", kill_on_drop: false }`
[INFO] [stdout] d0609094f61068c3bc5f712073de5b730e49626d61f661827f70a076b8450bfe