[INFO] crate google-classroom1 1.0.8+20181009 is already in cache
[INFO] extracting crate google-classroom1 1.0.8+20181009 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/google-classroom1/1.0.8+20181009
[INFO] extracting crate google-classroom1 1.0.8+20181009 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/google-classroom1/1.0.8+20181009
[INFO] validating manifest of google-classroom1-1.0.8+20181009 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of google-classroom1-1.0.8+20181009 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing google-classroom1-1.0.8+20181009
[INFO] finished frobbing google-classroom1-1.0.8+20181009
[INFO] frobbed toml for google-classroom1-1.0.8+20181009 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/google-classroom1/1.0.8+20181009/Cargo.toml
[INFO] started frobbing google-classroom1-1.0.8+20181009
[INFO] finished frobbing google-classroom1-1.0.8+20181009
[INFO] frobbed toml for google-classroom1-1.0.8+20181009 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/google-classroom1/1.0.8+20181009/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] building google-classroom1-1.0.8+20181009 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/google-classroom1/1.0.8+20181009:/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=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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] 7ffb4efd30898ae0e7a4200b16df10eca9856ebdd207276736cb857441b7ce2b
[INFO] running `"docker" "start" "-a" "7ffb4efd30898ae0e7a4200b16df10eca9856ebdd207276736cb857441b7ce2b"`
[INFO] [stderr]    Compiling google-classroom1 v1.0.8+20181009 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cmn.rs:344:46
[INFO] [stderr]     |
[INFO] [stderr] 344 |             Error::HttpError(ref err) => err.cause(),
[INFO] [stderr]     |                                              ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cmn.rs:345:55
[INFO] [stderr]     |
[INFO] [stderr] 345 |             Error::JsonDecodeError(_, ref err) => err.cause(),
[INFO] [stderr]     |                                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.84s
[INFO] running `"docker" "inspect" "7ffb4efd30898ae0e7a4200b16df10eca9856ebdd207276736cb857441b7ce2b"`
[INFO] running `"docker" "rm" "-f" "7ffb4efd30898ae0e7a4200b16df10eca9856ebdd207276736cb857441b7ce2b"`
[INFO] [stdout] 7ffb4efd30898ae0e7a4200b16df10eca9856ebdd207276736cb857441b7ce2b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/google-classroom1/1.0.8+20181009:/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=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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] f17ad2e71049132d09c4aab32c09c01212fb72baeeef9705ba670488df52096d
[INFO] running `"docker" "start" "-a" "f17ad2e71049132d09c4aab32c09c01212fb72baeeef9705ba670488df52096d"`
[INFO] [stderr]    Compiling google-classroom1 v1.0.8+20181009 (/opt/crater/workdir)
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cmn.rs:344:46
[INFO] [stderr]     |
[INFO] [stderr] 344 |             Error::HttpError(ref err) => err.cause(),
[INFO] [stderr]     |                                              ^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]    --> src/cmn.rs:345:55
[INFO] [stderr]     |
[INFO] [stderr] 345 |             Error::JsonDecodeError(_, ref err) => err.cause(),
[INFO] [stderr]     |                                                       ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.41s
[INFO] running `"docker" "inspect" "f17ad2e71049132d09c4aab32c09c01212fb72baeeef9705ba670488df52096d"`
[INFO] running `"docker" "rm" "-f" "f17ad2e71049132d09c4aab32c09c01212fb72baeeef9705ba670488df52096d"`
[INFO] [stdout] f17ad2e71049132d09c4aab32c09c01212fb72baeeef9705ba670488df52096d