[INFO] fetching crate palaver 0.3.0-alpha.3...
[INFO] checking palaver-0.3.0-alpha.3 against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] extracting crate palaver 0.3.0-alpha.3 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate palaver 0.3.0-alpha.3 on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate palaver 0.3.0-alpha.3
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate palaver 0.3.0-alpha.3
[INFO] tweaked toml for crates.io crate palaver 0.3.0-alpha.3 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate palaver 0.3.0-alpha.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded twox-hash v1.5.0
[INFO] [stderr]   Downloaded libflate v0.1.27
[INFO] [stderr]   Downloaded escargot v0.5.0
[INFO] [stderr]   Downloaded as-slice v0.1.2
[INFO] [stderr]   Downloaded hex v0.4.1
[INFO] [stderr]   Downloaded replace_with v0.1.5
[INFO] [stderr]   Downloaded typenum v1.11.2
[INFO] [stderr]   Downloaded mach v0.3.2
[INFO] [stderr]   Downloaded nix v0.16.1
[INFO] [stderr]   Downloaded valgrind_request v1.1.0
[INFO] [stderr]   Downloaded rle-decode-fast v1.0.1
[INFO] [stderr]   Downloaded generic-array v0.13.2
[INFO] [stderr]   Downloaded procfs v0.7.7
[INFO] [stderr]   Downloaded hash32 v0.1.1
[INFO] [stderr]   Downloaded take_mut v0.2.2
[INFO] [stderr]   Downloaded heapless v0.5.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df8278c611bff414d3b215ebc00c300130f3fc9476e6899a1be4066976e9732e
[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" "df8278c611bff414d3b215ebc00c300130f3fc9476e6899a1be4066976e9732e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df8278c611bff414d3b215ebc00c300130f3fc9476e6899a1be4066976e9732e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df8278c611bff414d3b215ebc00c300130f3fc9476e6899a1be4066976e9732e", kill_on_drop: false }`
[INFO] [stdout] df8278c611bff414d3b215ebc00c300130f3fc9476e6899a1be4066976e9732e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] e165bad6d32aba8fabf31fa4b1be9b4a41fb9f9482ad3ecb669db0d4845e0d70
[INFO] running `Command { std: "docker" "start" "-a" "e165bad6d32aba8fabf31fa4b1be9b4a41fb9f9482ad3ecb669db0d4845e0d70", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling syn v1.0.14
[INFO] [stderr]    Compiling byteorder v1.3.4
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling nix v0.16.1
[INFO] [stderr]    Compiling heapless v0.5.3
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]    Compiling escargot v0.5.0
[INFO] [stderr]     Checking hex v0.4.1
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking replace_with v0.1.5
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking hash32 v0.1.1
[INFO] [stderr]     Checking generic-array v0.12.3
[INFO] [stderr]     Checking generic-array v0.13.2
[INFO] [stderr]     Checking as-slice v0.1.2
[INFO] [stderr]     Checking getrandom v0.1.14
[INFO] [stderr]     Checking procfs v0.7.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]     Checking palaver v0.3.0-alpha.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking serde v1.0.104
[INFO] [stderr]     Checking serde_json v1.0.47
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.90s
[INFO] running `Command { std: "docker" "inspect" "e165bad6d32aba8fabf31fa4b1be9b4a41fb9f9482ad3ecb669db0d4845e0d70", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e165bad6d32aba8fabf31fa4b1be9b4a41fb9f9482ad3ecb669db0d4845e0d70", kill_on_drop: false }`
[INFO] [stdout] e165bad6d32aba8fabf31fa4b1be9b4a41fb9f9482ad3ecb669db0d4845e0d70