[INFO] fetching crate gut 0.5.0...
[INFO] checking gut-0.5.0 against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] extracting crate gut 0.5.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate gut 0.5.0 on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate gut 0.5.0
[INFO] finished tweaking crates.io crate gut 0.5.0
[INFO] tweaked toml for crates.io crate gut 0.5.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded dync-derive v0.3.0
[INFO] [stderr]   Downloaded gut-derive v0.5.0
[INFO] [stderr]   Downloaded reinterpret v0.2.1
[INFO] [stderr]   Downloaded data-buffer v0.7.1
[INFO] [stderr]   Downloaded obj v0.10.1
[INFO] [stderr]   Downloaded autodiff v0.1.9
[INFO] [stderr]   Downloaded vtkio v0.3.1
[INFO] [stderr]   Downloaded dync v0.3.2
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3102c414d2bab9b9f4085fb6b8b114a50071330393d5f4b1c5218c8e78e458eb
[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" "3102c414d2bab9b9f4085fb6b8b114a50071330393d5f4b1c5218c8e78e458eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3102c414d2bab9b9f4085fb6b8b114a50071330393d5f4b1c5218c8e78e458eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3102c414d2bab9b9f4085fb6b8b114a50071330393d5f4b1c5218c8e78e458eb", kill_on_drop: false }`
[INFO] [stdout] 3102c414d2bab9b9f4085fb6b8b114a50071330393d5f4b1c5218c8e78e458eb
[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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "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] 66f15c71ee4f00b604f9d64bccb398499a0e0792ee4c234a2fadc15070ab1a9e
[INFO] running `Command { std: "docker" "start" "-a" "66f15c71ee4f00b604f9d64bccb398499a0e0792ee4c234a2fadc15070ab1a9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.77
[INFO] [stderr]     Checking reinterpret v0.2.1
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking downcast-rs v1.2.0
[INFO] [stderr]     Checking regex-syntax v0.6.18
[INFO] [stderr]     Checking obj v0.10.1
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]     Checking bitflags v1.2.1
[INFO] [stderr]    Compiling cast v0.2.3
[INFO] [stderr]     Checking serde_json v1.0.57
[INFO] [stderr]     Checking serde_cbor v0.11.1
[INFO] [stderr]    Compiling num-derive v0.3.2
[INFO] [stderr]    Compiling gut-derive v0.5.0
[INFO] [stderr]     Checking bstr v0.2.13
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking csv v1.1.3
[INFO] [stderr]    Compiling dync-derive v0.3.0
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking getrandom v0.1.15
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking criterion-plot v0.4.3
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking nom v3.2.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tinytemplate v1.1.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking regex v1.3.9
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking data-buffer v0.7.1
[INFO] [stderr]     Checking plotters v0.2.15
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking vtkio v0.3.1
[INFO] [stderr]     Checking dync v0.3.2
[INFO] [stderr]     Checking autodiff v0.1.9
[INFO] [stderr]     Checking criterion v0.3.3
[INFO] [stderr]     Checking gut v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.21s
[INFO] running `Command { std: "docker" "inspect" "66f15c71ee4f00b604f9d64bccb398499a0e0792ee4c234a2fadc15070ab1a9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66f15c71ee4f00b604f9d64bccb398499a0e0792ee4c234a2fadc15070ab1a9e", kill_on_drop: false }`
[INFO] [stdout] 66f15c71ee4f00b604f9d64bccb398499a0e0792ee4c234a2fadc15070ab1a9e