[INFO] crate webgl-rendering-context 0.1.0 is already in cache
[INFO] extracting crate webgl-rendering-context 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/webgl-rendering-context/0.1.0
[INFO] extracting crate webgl-rendering-context 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/webgl-rendering-context/0.1.0
[INFO] validating manifest of webgl-rendering-context-0.1.0 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of webgl-rendering-context-0.1.0 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing webgl-rendering-context-0.1.0
[INFO] finished frobbing webgl-rendering-context-0.1.0
[INFO] frobbed toml for webgl-rendering-context-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/webgl-rendering-context/0.1.0/Cargo.toml
[INFO] started frobbing webgl-rendering-context-0.1.0
[INFO] finished frobbing webgl-rendering-context-0.1.0
[INFO] frobbed toml for webgl-rendering-context-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/webgl-rendering-context/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing webgl-rendering-context-0.1.0 against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/webgl-rendering-context/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 938c91ab2898ce643fe4e614d58cce8850119139ad302d9dafb550476e417fc9
[INFO] running `"docker" "start" "-a" "938c91ab2898ce643fe4e614d58cce8850119139ad302d9dafb550476e417fc9"`
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.48
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling lazy_static v1.3.0
[INFO] [stderr]    Compiling bumpalo v2.5.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.48
[INFO] [stderr]    Compiling stdweb-internal-runtime v0.1.4
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling base-x v0.2.5
[INFO] [stderr]    Compiling sha1 v0.6.0
[INFO] [stderr] error[E0463]: can't find crate for `std`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `wasm32-unknown-unknown` target may not be installed
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: Could not compile `itoa`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "938c91ab2898ce643fe4e614d58cce8850119139ad302d9dafb550476e417fc9"`
[INFO] running `"docker" "rm" "-f" "938c91ab2898ce643fe4e614d58cce8850119139ad302d9dafb550476e417fc9"`
[INFO] [stdout] 938c91ab2898ce643fe4e614d58cce8850119139ad302d9dafb550476e417fc9