[INFO] updating cached repository waxosuit/echo-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/waxosuit/echo-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/waxosuit/echo-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/waxosuit/echo-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/waxosuit/echo-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/waxosuit/echo-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/waxosuit/echo-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/waxosuit/echo-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 50684ea6464ec9921773ee58eefb190e986f23b9
[INFO] sha for GitHub repo waxosuit/echo-example: 50684ea6464ec9921773ee58eefb190e986f23b9
[INFO] validating manifest of waxosuit/echo-example 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 waxosuit/echo-example 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 waxosuit/echo-example
[INFO] finished frobbing waxosuit/echo-example
[INFO] frobbed toml for waxosuit/echo-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/waxosuit/echo-example/Cargo.toml
[INFO] started frobbing waxosuit/echo-example
[INFO] finished frobbing waxosuit/echo-example
[INFO] frobbed toml for waxosuit/echo-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/waxosuit/echo-example/Cargo.toml
[INFO] crate waxosuit/echo-example already has a lockfile, it will not be regenerated
[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 waxosuit/echo-example 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/gh/waxosuit/echo-example:/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] f38c6c2729e24e7680ce990d2b2536a63809263f93eccc3d5fff3e017663fca4
[INFO] running `"docker" "start" "-a" "f38c6c2729e24e7680ce990d2b2536a63809263f93eccc3d5fff3e017663fca4"`
[INFO] [stderr]    Compiling cc v1.0.37
[INFO] [stderr]    Compiling libc v0.2.60
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling spin v0.5.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling rustc-demangle v0.1.15
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling ppv-lite86 v0.2.5
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling fixedbitset v0.1.9
[INFO] [stderr]    Compiling iovec v0.1.2
[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 `iovec`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "f38c6c2729e24e7680ce990d2b2536a63809263f93eccc3d5fff3e017663fca4"`
[INFO] running `"docker" "rm" "-f" "f38c6c2729e24e7680ce990d2b2536a63809263f93eccc3d5fff3e017663fca4"`
[INFO] [stdout] f38c6c2729e24e7680ce990d2b2536a63809263f93eccc3d5fff3e017663fca4