[INFO] updating cached repository SEQUOIIA/ssh-notify
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/SEQUOIIA/ssh-notify
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/SEQUOIIA/ssh-notify" "work/ex/beta-1.38-1/sources/1.37.0/gh/SEQUOIIA/ssh-notify"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/SEQUOIIA/ssh-notify'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/SEQUOIIA/ssh-notify" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SEQUOIIA/ssh-notify"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SEQUOIIA/ssh-notify'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 67dc1747a28098d200f3ae576f3f0d752fd27391
[INFO] sha for GitHub repo SEQUOIIA/ssh-notify: 67dc1747a28098d200f3ae576f3f0d752fd27391
[INFO] validating manifest of SEQUOIIA/ssh-notify 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 SEQUOIIA/ssh-notify 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 SEQUOIIA/ssh-notify
[INFO] finished frobbing SEQUOIIA/ssh-notify
[INFO] frobbed toml for SEQUOIIA/ssh-notify written to work/ex/beta-1.38-1/sources/1.37.0/gh/SEQUOIIA/ssh-notify/Cargo.toml
[INFO] started frobbing SEQUOIIA/ssh-notify
[INFO] finished frobbing SEQUOIIA/ssh-notify
[INFO] frobbed toml for SEQUOIIA/ssh-notify written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/SEQUOIIA/ssh-notify/Cargo.toml
[INFO] crate SEQUOIIA/ssh-notify 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing SEQUOIIA/ssh-notify against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/SEQUOIIA/ssh-notify:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 0b8669a1d21e33cf0d71050f9bde56f4ed5ca073ea5cf8eace190cf4dd828a48
[INFO] running `"docker" "start" "-a" "0b8669a1d21e33cf0d71050f9bde56f4ed5ca073ea5cf8eace190cf4dd828a48"`
[INFO] [stderr]    Compiling openssl v0.10.19
[INFO] [stderr]    Compiling log-mdc v0.1.0
[INFO] [stderr]    Compiling ipnet v2.0.0
[INFO] [stderr]    Compiling email v0.0.20
[INFO] [stderr]    Compiling tokio-sync v0.1.3
[INFO] [stderr]    Compiling yaml-rust v0.4.3
[INFO] [stderr]    Compiling tokio-executor v0.1.6
[INFO] [stderr]    Compiling thread-id v3.3.0
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling serde-value v0.5.3
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling native-tls v0.2.2
[INFO] [stderr]    Compiling uuid v0.7.2
[INFO] [stderr]    Compiling tokio-current-thread v0.1.5
[INFO] [stderr]    Compiling tokio-timer v0.2.10
[INFO] [stderr]    Compiling mio v0.6.16
[INFO] [stderr]    Compiling tokio-io v0.1.12
[INFO] [stderr]    Compiling tokio-threadpool v0.1.12
[INFO] [stderr]    Compiling want v0.0.6
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling h2 v0.1.16
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling serde_yaml v0.8.8
[INFO] [stderr]    Compiling pretty_env_logger v0.3.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.9
[INFO] [stderr]    Compiling log4rs v0.8.1
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling tokio-tcp v0.1.3
[INFO] [stderr]    Compiling tokio v0.1.16
[INFO] [stderr]    Compiling lettre v0.8.3
[INFO] [stderr]    Compiling hyper v0.12.25
[INFO] [stderr]    Compiling lettre_email v0.8.3
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]    --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/lettre_email-0.8.3/src/lib.rs:387:70
[INFO] [stderr]     |
[INFO] [stderr] 387 |         self.add_header(("Content-Type", format!("{}", content_type).as_ref()));
[INFO] [stderr]     |                                                                      ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0283`.
[INFO] [stderr] error: Could not compile `lettre_email`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "0b8669a1d21e33cf0d71050f9bde56f4ed5ca073ea5cf8eace190cf4dd828a48"`
[INFO] running `"docker" "rm" "-f" "0b8669a1d21e33cf0d71050f9bde56f4ed5ca073ea5cf8eace190cf4dd828a48"`
[INFO] [stdout] 0b8669a1d21e33cf0d71050f9bde56f4ed5ca073ea5cf8eace190cf4dd828a48