[INFO] fetching crate ikon 0.1.0-beta.16...
[INFO] checking ikon-0.1.0-beta.16 against master#893fadd11a52aa26fc19c67ee1b79f03d6a1bed3 for pr-77153
[INFO] extracting crate ikon 0.1.0-beta.16 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ikon 0.1.0-beta.16 on toolchain 893fadd11a52aa26fc19c67ee1b79f03d6a1bed3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 275a6c4965d126590efe5df2537864cb6f9dd415ca30dece10f9cf5dbe1b97b5
[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" "275a6c4965d126590efe5df2537864cb6f9dd415ca30dece10f9cf5dbe1b97b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "275a6c4965d126590efe5df2537864cb6f9dd415ca30dece10f9cf5dbe1b97b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "275a6c4965d126590efe5df2537864cb6f9dd415ca30dece10f9cf5dbe1b97b5", kill_on_drop: false }`
[INFO] [stdout] 275a6c4965d126590efe5df2537864cb6f9dd415ca30dece10f9cf5dbe1b97b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+893fadd11a52aa26fc19c67ee1b79f03d6a1bed3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e84d66c53163a958c68ae78a148f63fbb2cf1bff8f8c584f64a9d50d643d5d9d
[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" "e84d66c53163a958c68ae78a148f63fbb2cf1bff8f8c584f64a9d50d643d5d9d", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling cmake v0.1.44
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking data-url v0.1.0
[INFO] [stderr]     Checking arrayvec v0.4.12
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking euclid v0.20.14
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking libflate v0.1.27
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking kurbo v0.2.3
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]    Compiling freetype-sys v0.11.0
[INFO] [stderr]    Compiling harfbuzz-sys v0.4.1
[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 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 24.54s
[INFO] running `Command { std: "docker" "inspect" "e84d66c53163a958c68ae78a148f63fbb2cf1bff8f8c584f64a9d50d643d5d9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e84d66c53163a958c68ae78a148f63fbb2cf1bff8f8c584f64a9d50d643d5d9d", kill_on_drop: false }`
[INFO] [stdout] e84d66c53163a958c68ae78a148f63fbb2cf1bff8f8c584f64a9d50d643d5d9d