[INFO] cloning repository AndrewGaspar/hello-emterpreter-async-rust
[INFO] running `"git" "clone" "--bare" "git://github.com/AndrewGaspar/hello-emterpreter-async-rust.git" "work/cache/sources/gh/AndrewGaspar/hello-emterpreter-async-rust"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/AndrewGaspar/hello-emterpreter-async-rust'...
[INFO] running `"git" "clone" "work/cache/sources/gh/AndrewGaspar/hello-emterpreter-async-rust" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AndrewGaspar/hello-emterpreter-async-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AndrewGaspar/hello-emterpreter-async-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AndrewGaspar/hello-emterpreter-async-rust" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AndrewGaspar/hello-emterpreter-async-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AndrewGaspar/hello-emterpreter-async-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0db904aed056dfa6a697ef6ef3920ecfda6fe764
[INFO] sha for GitHub repo AndrewGaspar/hello-emterpreter-async-rust: 0db904aed056dfa6a697ef6ef3920ecfda6fe764
[INFO] validating manifest of AndrewGaspar/hello-emterpreter-async-rust on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of AndrewGaspar/hello-emterpreter-async-rust on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing AndrewGaspar/hello-emterpreter-async-rust
[INFO] finished frobbing AndrewGaspar/hello-emterpreter-async-rust
[INFO] frobbed toml for AndrewGaspar/hello-emterpreter-async-rust written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/AndrewGaspar/hello-emterpreter-async-rust/Cargo.toml
[INFO] started frobbing AndrewGaspar/hello-emterpreter-async-rust
[INFO] finished frobbing AndrewGaspar/hello-emterpreter-async-rust
[INFO] frobbed toml for AndrewGaspar/hello-emterpreter-async-rust written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AndrewGaspar/hello-emterpreter-async-rust/Cargo.toml
[INFO] crate AndrewGaspar/hello-emterpreter-async-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded node-rs v0.1.3
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] checking AndrewGaspar/hello-emterpreter-async-rust against try#8f81d0bf6baf07b92f1246696722485c4ca0b049 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-2/try#8f81d0bf6baf07b92f1246696722485c4ca0b049:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/AndrewGaspar/hello-emterpreter-async-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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=forbid" "-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" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 10bcdc220fd0db6cba4bb120ce243cfe9f04a780fd5b4ba2009980b4e0ac35dd
[INFO] running `"docker" "start" "-a" "10bcdc220fd0db6cba4bb120ce243cfe9f04a780fd5b4ba2009980b4e0ac35dd"`
[INFO] [stderr]    Compiling proc-macro2 v0.4.13
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ryu v0.2.5
[INFO] [stderr]    Compiling serde v1.0.74
[INFO] [stderr]    Compiling stdweb v0.4.8
[INFO] [stderr]     Checking itoa v0.4.2
[INFO] [stderr]     Checking discard v1.0.3
[INFO] [stderr] error[E0463]: can't find crate for `std`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `wasm32-unknown-emscripten` 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 `discard`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0463]: can't find crate for `std`
[INFO] [stderr]   |
[INFO] [stderr]   = note: the `wasm32-unknown-emscripten` 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" "10bcdc220fd0db6cba4bb120ce243cfe9f04a780fd5b4ba2009980b4e0ac35dd"`
[INFO] running `"docker" "rm" "-f" "10bcdc220fd0db6cba4bb120ce243cfe9f04a780fd5b4ba2009980b4e0ac35dd"`
[INFO] [stdout] 10bcdc220fd0db6cba4bb120ce243cfe9f04a780fd5b4ba2009980b4e0ac35dd