[INFO] cloning repository https://github.com/purefunctor/inference-with-constraints
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/purefunctor/inference-with-constraints" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpurefunctor%2Finference-with-constraints", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpurefunctor%2Finference-with-constraints'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 31f02df87e5d750c83721d313a9b93ee8f2bec86
[INFO] checking purefunctor/inference-with-constraints against try#5cafabc9f16561d7796554d5d241c3068e2bd97f for pr-135852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpurefunctor%2Finference-with-constraints" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/purefunctor/inference-with-constraints on toolchain 5cafabc9f16561d7796554d5d241c3068e2bd97f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/purefunctor/inference-with-constraints
[INFO] finished tweaking git repo https://github.com/purefunctor/inference-with-constraints
[INFO] tweaked toml for git repo https://github.com/purefunctor/inference-with-constraints written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/purefunctor/inference-with-constraints already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking purefunctor/inference-with-constraints against try#5cafabc9f16561d7796554d5d241c3068e2bd97f for pr-135852
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpurefunctor%2Finference-with-constraints" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/purefunctor/inference-with-constraints on toolchain 5cafabc9f16561d7796554d5d241c3068e2bd97f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/purefunctor/inference-with-constraints
[INFO] finished tweaking git repo https://github.com/purefunctor/inference-with-constraints
[INFO] tweaked toml for git repo https://github.com/purefunctor/inference-with-constraints written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/purefunctor/inference-with-constraints already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.173
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd6d2cb65ca34e08d05c0f9b238f6ecb11843b0578ed3a55812c4e7b77f4b127
[INFO] running `Command { std: "docker" "start" "-a" "bd6d2cb65ca34e08d05c0f9b238f6ecb11843b0578ed3a55812c4e7b77f4b127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd6d2cb65ca34e08d05c0f9b238f6ecb11843b0578ed3a55812c4e7b77f4b127", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd6d2cb65ca34e08d05c0f9b238f6ecb11843b0578ed3a55812c4e7b77f4b127", kill_on_drop: false }`
[INFO] [stdout] bd6d2cb65ca34e08d05c0f9b238f6ecb11843b0578ed3a55812c4e7b77f4b127
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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" "RUSTDOCFLAGS=--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:c80049f3b88b82089a44e0f06d0d6029d44b96b7257e55a1cd63dbc9f4c33334" "/opt/rustwide/cargo-home/bin/cargo" "+5cafabc9f16561d7796554d5d241c3068e2bd97f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 54a6b40ad29bfc8b2fad1409bd1f8fe555e31e225e16c6001fa651be2e3f814b
[INFO] running `Command { std: "docker" "start" "-a" "54a6b40ad29bfc8b2fad1409bd1f8fe555e31e225e16c6001fa651be2e3f814b", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking smol_str v0.2.0
[INFO] [stderr]     Checking iwc-arena v0.1.0 (/opt/rustwide/workdir/iwc-arena)
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]    Compiling anyhow v1.0.72
[INFO] [stderr]     Checking fixedbitset v0.4.2
[INFO] [stderr]    Compiling im v15.1.0
[INFO] [stderr]    Compiling indexmap v1.9.3
[INFO] [stderr]     Checking rand_xoshiro v0.6.0
[INFO] [stderr]     Checking concurrent-queue v2.2.0
[INFO] [stderr]     Checking petgraph v0.6.3
[INFO] [stderr]     Checking bitmaps v2.1.0
[INFO] [stderr]     Checking sized-chunks v0.6.5
[INFO] [stderr]     Checking iwc-core-ast v0.1.0 (/opt/rustwide/workdir/iwc-core-ast)
[INFO] [stderr]     Checking iwc-core-error v0.1.0 (/opt/rustwide/workdir/iwc-core-error)
[INFO] [stderr]     Checking iwc-core-constraint v0.1.0 (/opt/rustwide/workdir/iwc-core-constraint)
[INFO] [stderr]     Checking iwc-core-elaborate v0.1.0 (/opt/rustwide/workdir/iwc-core-elaborate)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.59s
[INFO] running `Command { std: "docker" "inspect" "54a6b40ad29bfc8b2fad1409bd1f8fe555e31e225e16c6001fa651be2e3f814b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54a6b40ad29bfc8b2fad1409bd1f8fe555e31e225e16c6001fa651be2e3f814b", kill_on_drop: false }`
[INFO] [stdout] 54a6b40ad29bfc8b2fad1409bd1f8fe555e31e225e16c6001fa651be2e3f814b