[INFO] fetching crate reefast 0.0.1...
[INFO] testing reefast-0.0.1 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate reefast 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate reefast 0.0.1 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate reefast 0.0.1
[INFO] finished tweaking crates.io crate reefast 0.0.1
[INFO] tweaked toml for crates.io crate reefast 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate reefast 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2eb33d8824033b2c1c00fbc159bab112e3d1a080d8d22b8db99e9f2c5fc52d46
[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" "2eb33d8824033b2c1c00fbc159bab112e3d1a080d8d22b8db99e9f2c5fc52d46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2eb33d8824033b2c1c00fbc159bab112e3d1a080d8d22b8db99e9f2c5fc52d46", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2eb33d8824033b2c1c00fbc159bab112e3d1a080d8d22b8db99e9f2c5fc52d46", kill_on_drop: false }`
[INFO] [stdout] 2eb33d8824033b2c1c00fbc159bab112e3d1a080d8d22b8db99e9f2c5fc52d46
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--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] 28e09be0401e9d5394cfc3f505c11bde7f2c90387d8085e85e3cab35f43938d1
[INFO] running `Command { std: "docker" "start" "-a" "28e09be0401e9d5394cfc3f505c11bde7f2c90387d8085e85e3cab35f43938d1", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.25
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling proc-macro2 v1.0.17
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling quote v1.0.6
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling serde_json v1.0.53
[INFO] [stderr]    Compiling reefast v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 33.62s
[INFO] running `Command { std: "docker" "inspect" "28e09be0401e9d5394cfc3f505c11bde7f2c90387d8085e85e3cab35f43938d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28e09be0401e9d5394cfc3f505c11bde7f2c90387d8085e85e3cab35f43938d1", kill_on_drop: false }`
[INFO] [stdout] 28e09be0401e9d5394cfc3f505c11bde7f2c90387d8085e85e3cab35f43938d1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3a6760a5955672c279dcf841f41a5c21fa4c7cd7dbfbafd7a23037215af7e6b4
[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" "3a6760a5955672c279dcf841f41a5c21fa4c7cd7dbfbafd7a23037215af7e6b4", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling time v0.1.43
[INFO] [stderr]    Compiling chrono v0.4.11
[INFO] [stderr]    Compiling fern v0.5.9
[INFO] [stderr]    Compiling reefast v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 13.06s
[INFO] running `Command { std: "docker" "inspect" "3a6760a5955672c279dcf841f41a5c21fa4c7cd7dbfbafd7a23037215af7e6b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3a6760a5955672c279dcf841f41a5c21fa4c7cd7dbfbafd7a23037215af7e6b4", kill_on_drop: false }`
[INFO] [stdout] 3a6760a5955672c279dcf841f41a5c21fa4c7cd7dbfbafd7a23037215af7e6b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 655d7b4741eb09175579c774b00c5282f64f763ef5fd9d4cec66c05f4ff31958
[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" "655d7b4741eb09175579c774b00c5282f64f763ef5fd9d4cec66c05f4ff31958", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/reefast-8b826552cbb3a231
[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] [stderr]    Doc-tests reefast
[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" "655d7b4741eb09175579c774b00c5282f64f763ef5fd9d4cec66c05f4ff31958", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "655d7b4741eb09175579c774b00c5282f64f763ef5fd9d4cec66c05f4ff31958", kill_on_drop: false }`
[INFO] [stdout] 655d7b4741eb09175579c774b00c5282f64f763ef5fd9d4cec66c05f4ff31958