[INFO] fetching crate fractal-analysis 0.2.0...
[INFO] checking fractal-analysis-0.2.0 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate fractal-analysis 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate fractal-analysis 0.2.0 on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fractal-analysis 0.2.0
[INFO] finished tweaking crates.io crate fractal-analysis 0.2.0
[INFO] tweaked toml for crates.io crate fractal-analysis 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itertools v0.8.2
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded arrayvec v0.6.1
[INFO] [stderr]   Downloaded gif v0.9.2
[INFO] [stderr]   Downloaded png v0.11.0
[INFO] [stderr]   Downloaded enum_primitive v0.1.1
[INFO] [stderr]   Downloaded rand v0.5.6
[INFO] [stderr]   Downloaded noise v0.6.0
[INFO] [stderr]   Downloaded morton-encoding v2.0.1
[INFO] [stderr]   Downloaded inflate v0.3.4
[INFO] [stderr]   Downloaded image v0.18.0
[INFO] [stderr]   Downloaded lindel v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3fa4508591ea68972e5f38c0a8309e07251058cc6542ffa04b466e88ed3fe801
[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" "3fa4508591ea68972e5f38c0a8309e07251058cc6542ffa04b466e88ed3fe801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3fa4508591ea68972e5f38c0a8309e07251058cc6542ffa04b466e88ed3fe801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3fa4508591ea68972e5f38c0a8309e07251058cc6542ffa04b466e88ed3fe801", kill_on_drop: false }`
[INFO] [stdout] 3fa4508591ea68972e5f38c0a8309e07251058cc6542ffa04b466e88ed3fe801
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "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] b613c4882ef465f5a509ac657fdc550c558d700c073f1fe4872ee942332a476d
[INFO] running `Command { std: "docker" "start" "-a" "b613c4882ef465f5a509ac657fdc550c558d700c073f1fe4872ee942332a476d", kill_on_drop: false }`
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]     Checking arrayvec v0.6.1
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking enum_primitive v0.1.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking gif v0.9.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num v0.2.1
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking morton-encoding v2.0.1
[INFO] [stderr]     Checking lindel v0.1.1
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking noise v0.6.0
[INFO] [stderr]     Checking fractal-analysis v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.83s
[INFO] running `Command { std: "docker" "inspect" "b613c4882ef465f5a509ac657fdc550c558d700c073f1fe4872ee942332a476d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b613c4882ef465f5a509ac657fdc550c558d700c073f1fe4872ee942332a476d", kill_on_drop: false }`
[INFO] [stdout] b613c4882ef465f5a509ac657fdc550c558d700c073f1fe4872ee942332a476d