[INFO] crate euphrates_x64 0.1.0 is already in cache
[INFO] extracting crate euphrates_x64 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/euphrates_x64/0.1.0
[INFO] extracting crate euphrates_x64 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/euphrates_x64/0.1.0
[INFO] validating manifest of euphrates_x64-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of euphrates_x64-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing euphrates_x64-0.1.0
[INFO] finished frobbing euphrates_x64-0.1.0
[INFO] frobbed toml for euphrates_x64-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/euphrates_x64/0.1.0/Cargo.toml
[INFO] started frobbing euphrates_x64-0.1.0
[INFO] finished frobbing euphrates_x64-0.1.0
[INFO] frobbed toml for euphrates_x64-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/euphrates_x64/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing euphrates_x64-0.1.0 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/euphrates_x64/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] da1924f628ff2df99c182fd3e59a37962102a62866e90f8f01b4ae3b64dd5a1e
[INFO] running `"docker" "start" "-a" "da1924f628ff2df99c182fd3e59a37962102a62866e90f8f01b4ae3b64dd5a1e"`
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling euphrates_x64 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error: failed to run custom build command for `euphrates_x64 v0.1.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/euphrates_x64-d4c8a2e869eedfe8/build-script-build` (exit code: 1)
[INFO] [stderr] --- stdout
[INFO] [stderr] TARGET = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] OPT_LEVEL = Some("0")
[INFO] [stderr] HOST = Some("x86_64-unknown-linux-gnu")
[INFO] [stderr] CC_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CC_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CC = None
[INFO] [stderr] CC = Some("clang")
[INFO] [stderr] CFLAGS_x86_64-unknown-linux-gnu = None
[INFO] [stderr] CFLAGS_x86_64_unknown_linux_gnu = None
[INFO] [stderr] HOST_CFLAGS = None
[INFO] [stderr] CFLAGS = None
[INFO] [stderr] CRATE_CC_NO_DEFAULTS = None
[INFO] [stderr] DEBUG = Some("true")
[INFO] [stderr] running: "clang" "-O0" "-ffunction-sections" "-fdata-sections" "-fPIC" "-g" "-fno-omit-frame-pointer" "--target=x86_64-unknown-linux-gnu" "-Wall" "-Wextra" "-o" "/opt/crater/target/debug/build/euphrates_x64-157c5021718dfc13/out/src/pattern_to_palette_indices.o" "-c" "src/pattern_to_palette_indices.s"
[INFO] [stderr] 
[INFO] [stderr] --- stderr
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] error occurred: Failed to find tool. Is `clang` installed?
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "da1924f628ff2df99c182fd3e59a37962102a62866e90f8f01b4ae3b64dd5a1e"`
[INFO] running `"docker" "rm" "-f" "da1924f628ff2df99c182fd3e59a37962102a62866e90f8f01b4ae3b64dd5a1e"`
[INFO] [stdout] da1924f628ff2df99c182fd3e59a37962102a62866e90f8f01b4ae3b64dd5a1e