[INFO] updating cached repository https://github.com/ffimnsr/simple-webservice-rust
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] fa784d2adfca24055555f407c52dee2a9eedb293
[INFO] checking ffimnsr/simple-webservice-rust against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fffimnsr%2Fsimple-webservice-rust" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ffimnsr/simple-webservice-rust on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/ffimnsr/simple-webservice-rust
[INFO] finished tweaking git repo https://github.com/ffimnsr/simple-webservice-rust
[INFO] tweaked toml for git repo https://github.com/ffimnsr/simple-webservice-rust written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/ffimnsr/simple-webservice-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 8dc4af0f0a05dbd5f7b4357dd31b54a56109b49da5868b1f2cfc8296bcd71ffd
[INFO] running `"docker" "start" "-a" "8dc4af0f0a05dbd5f7b4357dd31b54a56109b49da5868b1f2cfc8296bcd71ffd"`
[INFO] [stderr]    Compiling email v0.0.19
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling gotham_derive v0.2.1
[INFO] [stderr]     Checking error-chain v0.11.0
[INFO] [stderr]     Checking hmac v0.6.2
[INFO] [stderr]     Checking md-5 v0.7.0
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]    Compiling ring v0.12.1
[INFO] [stderr]     Checking dotenv v0.13.0
[INFO] [stderr]     Checking lettre v0.8.2
[INFO] [stderr]     Checking diesel v1.3.2
[INFO] [stderr]    Compiling cargo_metadata v0.5.8
[INFO] [stderr]    Compiling skeptic v0.13.3
[INFO] [stderr]     Checking lettre_email v0.8.2
[INFO] [stderr]     Checking jsonwebtoken v4.0.1
[INFO] [stderr] error[E0283]: type annotations required: cannot resolve `std::string::String: std::convert::AsRef<_>`
[INFO] [stderr]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lettre_email-0.8.2/src/lib.rs:361:70
[INFO] [stderr]     |
[INFO] [stderr] 361 |         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" "8dc4af0f0a05dbd5f7b4357dd31b54a56109b49da5868b1f2cfc8296bcd71ffd"`
[INFO] running `"docker" "rm" "-f" "8dc4af0f0a05dbd5f7b4357dd31b54a56109b49da5868b1f2cfc8296bcd71ffd"`
[INFO] [stdout] 8dc4af0f0a05dbd5f7b4357dd31b54a56109b49da5868b1f2cfc8296bcd71ffd