[INFO] fetching crate fairsquare 0.0.0...
[INFO] testing fairsquare-0.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate fairsquare 0.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate fairsquare 0.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fairsquare 0.0.0
[INFO] finished tweaking crates.io crate fairsquare 0.0.0
[INFO] tweaked toml for crates.io crate fairsquare 0.0.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27770ec32095db72cd444b71374dfc137cedeb74f2567edb808b9e5ddbe38795
[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" "27770ec32095db72cd444b71374dfc137cedeb74f2567edb808b9e5ddbe38795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27770ec32095db72cd444b71374dfc137cedeb74f2567edb808b9e5ddbe38795", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27770ec32095db72cd444b71374dfc137cedeb74f2567edb808b9e5ddbe38795", kill_on_drop: false }`
[INFO] [stdout] 27770ec32095db72cd444b71374dfc137cedeb74f2567edb808b9e5ddbe38795
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 364f4455db93cd9afac51dcf03fd507d105be1cd2c9ed5858f416db5b2cee40e
[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" "364f4455db93cd9afac51dcf03fd507d105be1cd2c9ed5858f416db5b2cee40e", kill_on_drop: false }`
[INFO] [stderr]    Compiling assert_approx_eq v1.1.0
[INFO] [stderr]    Compiling juggernaut v0.9.0
[INFO] [stderr]    Compiling fairsquare v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.02s
[INFO] running `Command { std: "docker" "inspect" "364f4455db93cd9afac51dcf03fd507d105be1cd2c9ed5858f416db5b2cee40e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "364f4455db93cd9afac51dcf03fd507d105be1cd2c9ed5858f416db5b2cee40e", kill_on_drop: false }`
[INFO] [stdout] 364f4455db93cd9afac51dcf03fd507d105be1cd2c9ed5858f416db5b2cee40e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c9e2487e03a9383a0550f735b729bc5f0dd73bd29e8cbf51d1eb0b3da084879b
[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" "c9e2487e03a9383a0550f735b729bc5f0dd73bd29e8cbf51d1eb0b3da084879b", kill_on_drop: false }`
[INFO] [stderr]    Compiling fairsquare v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.77s
[INFO] running `Command { std: "docker" "inspect" "c9e2487e03a9383a0550f735b729bc5f0dd73bd29e8cbf51d1eb0b3da084879b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c9e2487e03a9383a0550f735b729bc5f0dd73bd29e8cbf51d1eb0b3da084879b", kill_on_drop: false }`
[INFO] [stdout] c9e2487e03a9383a0550f735b729bc5f0dd73bd29e8cbf51d1eb0b3da084879b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b58926ea795c2b6749789a9bb5270bad70cc7ea2d9d7c163405604d3c9018e6e
[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" "b58926ea795c2b6749789a9bb5270bad70cc7ea2d9d7c163405604d3c9018e6e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/fairsquare-f91ba817ae6c9b2e)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests fairsquare
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b58926ea795c2b6749789a9bb5270bad70cc7ea2d9d7c163405604d3c9018e6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b58926ea795c2b6749789a9bb5270bad70cc7ea2d9d7c163405604d3c9018e6e", kill_on_drop: false }`
[INFO] [stdout] b58926ea795c2b6749789a9bb5270bad70cc7ea2d9d7c163405604d3c9018e6e