[INFO] fetching crate ikon 0.1.0-beta.16...
[INFO] checking ikon-0.1.0-beta.16 against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] extracting crate ikon 0.1.0-beta.16 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate ikon 0.1.0-beta.16 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 ikon 0.1.0-beta.16
[INFO] finished tweaking crates.io crate ikon 0.1.0-beta.16
[INFO] tweaked toml for crates.io crate ikon 0.1.0-beta.16 written to /workspace/builds/worker-1/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rctree v0.3.3
[INFO] [stderr]   Downloaded simplecss v0.2.0
[INFO] [stderr]   Downloaded svgtypes v0.5.0
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[INFO] [stderr]   Downloaded lyon_geom v0.14.1
[INFO] [stderr]   Downloaded freetype v0.5.1
[INFO] [stderr]   Downloaded roxmltree v0.7.3
[INFO] [stderr]   Downloaded float-cmp v0.5.3
[INFO] [stderr]   Downloaded harfbuzz_rs v1.2.0
[INFO] [stderr]   Downloaded unicode-vo v0.1.0
[INFO] [stderr]   Downloaded euclid v0.20.14
[INFO] [stderr]   Downloaded xmlparser v0.10.0
[INFO] [stderr]   Downloaded kurbo v0.2.3
[INFO] [stderr]   Downloaded freetype-sys v0.11.0
[INFO] [stderr]   Downloaded harfbuzz-sys v0.4.1
[INFO] [stderr]   Downloaded data-url v0.1.0
[INFO] [stderr]   Downloaded sw-composite v0.5.10
[INFO] [stderr]   Downloaded resvg v0.8.0
[INFO] [stderr]   Downloaded raqote v0.6.4
[INFO] [stderr]   Downloaded unicode-script v0.3.0
[INFO] [stderr]   Downloaded usvg v0.8.0
[INFO] [stderr]   Downloaded ttf-parser v0.2.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] 4d88d2c21d5eed05e8db2d56cb4c9d60de830be4321379c48cf65cf1911bc3f5
[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" "4d88d2c21d5eed05e8db2d56cb4c9d60de830be4321379c48cf65cf1911bc3f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d88d2c21d5eed05e8db2d56cb4c9d60de830be4321379c48cf65cf1911bc3f5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d88d2c21d5eed05e8db2d56cb4c9d60de830be4321379c48cf65cf1911bc3f5", kill_on_drop: false }`
[INFO] [stdout] 4d88d2c21d5eed05e8db2d56cb4c9d60de830be4321379c48cf65cf1911bc3f5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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] [stdout] a7d587e7d54cdf1b1e0ed9f3cc7b8aedabb49021df1218f1f21a41b8ecf0972e
[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" "a7d587e7d54cdf1b1e0ed9f3cc7b8aedabb49021df1218f1f21a41b8ecf0972e", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]     Checking adler32 v1.2.0
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling rayon-core v1.9.0
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]     Checking siphasher v0.2.3
[INFO] [stderr]     Checking xmlparser v0.10.0
[INFO] [stderr]     Checking rle-decode-fast v1.0.1
[INFO] [stderr]     Checking take_mut v0.2.2
[INFO] [stderr]     Checking float-cmp v0.5.3
[INFO] [stderr]     Checking lzw v0.10.0
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking color_quant v1.1.0
[INFO] [stderr]     Checking rctree v0.3.3
[INFO] [stderr]     Checking ttf-parser v0.2.2
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking sw-composite v0.5.10
[INFO] [stderr]     Checking typed-arena v1.7.0
[INFO] [stderr]     Checking unicode-vo v0.1.0
[INFO] [stderr]     Checking unicode-script v0.3.0
[INFO] [stderr]     Checking scoped_threadpool v0.1.9
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling rayon v1.5.0
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking unicode-bidi v0.3.5
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]     Checking roxmltree v0.7.3
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking rgb v0.8.27
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking kurbo v0.2.3
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking num-iter v0.1.42
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]    Compiling freetype-sys v0.11.0
[INFO] [stderr]    Compiling harfbuzz-sys v0.4.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking lyon_geom v0.14.1
[INFO] [stderr]     Checking freetype v0.5.1
[INFO] [stderr]     Checking raqote v0.6.4
[INFO] [stderr]     Checking harfbuzz_rs v1.2.0
[INFO] [stderr]     Checking usvg v0.8.0
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking resvg v0.8.0
[INFO] [stderr]     Checking tiff v0.3.1
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking ikon v0.1.0-beta.16 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.72s
[INFO] running `Command { std: "docker" "inspect" "a7d587e7d54cdf1b1e0ed9f3cc7b8aedabb49021df1218f1f21a41b8ecf0972e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7d587e7d54cdf1b1e0ed9f3cc7b8aedabb49021df1218f1f21a41b8ecf0972e", kill_on_drop: false }`
[INFO] [stdout] a7d587e7d54cdf1b1e0ed9f3cc7b8aedabb49021df1218f1f21a41b8ecf0972e