[INFO] updating cached repository sunny4381/twitnot
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sunny4381/twitnot
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sunny4381/twitnot" "work/ex/beta-1.38-1/sources/1.37.0/gh/sunny4381/twitnot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/sunny4381/twitnot'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sunny4381/twitnot" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sunny4381/twitnot"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sunny4381/twitnot'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 458721ebeaeaef4927a90f0642ce0fe9d5de1445
[INFO] sha for GitHub repo sunny4381/twitnot: 458721ebeaeaef4927a90f0642ce0fe9d5de1445
[INFO] validating manifest of sunny4381/twitnot 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 sunny4381/twitnot 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 sunny4381/twitnot
[INFO] finished frobbing sunny4381/twitnot
[INFO] frobbed toml for sunny4381/twitnot written to work/ex/beta-1.38-1/sources/1.37.0/gh/sunny4381/twitnot/Cargo.toml
[INFO] started frobbing sunny4381/twitnot
[INFO] finished frobbing sunny4381/twitnot
[INFO] frobbed toml for sunny4381/twitnot written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/sunny4381/twitnot/Cargo.toml
[INFO] crate sunny4381/twitnot 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 sunny4381/twitnot 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-4/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/sunny4381/twitnot:/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] cdcfdb8256eecc9d1a8e07fee4f13e84c74f1cdfcfbaf467d8657d0d62a31632
[INFO] running `"docker" "start" "-a" "cdcfdb8256eecc9d1a8e07fee4f13e84c74f1cdfcfbaf467d8657d0d62a31632"`
[INFO] [stderr]    Compiling matches v0.1.7
[INFO] [stderr]    Compiling serde v1.0.71
[INFO] [stderr]    Compiling email v0.0.20
[INFO] [stderr]    Compiling log v0.4.3
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling encoding_rs v0.7.2
[INFO] [stderr]    Compiling base64 v0.5.2
[INFO] [stderr]    Compiling openssl-sys v0.9.35
[INFO] [stderr]    Compiling uuid v0.6.5
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling nom v3.2.1
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling mio v0.6.15
[INFO] [stderr]    Compiling want v0.0.4
[INFO] [stderr]    Compiling backtrace-sys v0.1.23
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling phf_shared v0.7.22
[INFO] [stderr]    Compiling syn v0.14.8
[INFO] [stderr]    Compiling digest v0.7.5
[INFO] [stderr]    Compiling idna v0.1.5
[INFO] [stderr]    Compiling backtrace v0.3.9
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling libflate v0.1.16
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling regex v1.0.2
[INFO] [stderr]    Compiling chrono v0.4.5
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling phf v0.7.22
[INFO] [stderr]    Compiling hmac v0.6.2
[INFO] [stderr]    Compiling md-5 v0.7.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.3
[INFO] [stderr]    Compiling rust-sqlite v0.3.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.5
[INFO] [stderr]    Compiling openssl v0.9.24
[INFO] [stderr]    Compiling url v1.7.1
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.1
[INFO] [stderr]    Compiling env_logger v0.5.12
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-fs v0.1.3
[INFO] [stderr]    Compiling synstructure v0.9.0
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling native-tls v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling serde_json v1.0.24
[INFO] [stderr]    Compiling serde_urlencoded v0.5.2
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling serde_derive v1.0.71
[INFO] [stderr]    Compiling failure_derive v0.1.2
[INFO] [stderr]    Compiling failure v0.1.2
[INFO] [stderr]    Compiling dotenv v0.13.0
[INFO] [stderr]    Compiling hyper-tls v0.1.4
[INFO] [stderr]    Compiling reqwest v0.8.7
[INFO] [stderr]    Compiling lettre v0.8.2
[INFO] [stderr]    Compiling docopt v1.0.0
[INFO] [stderr]    Compiling lettre_email v0.8.2
[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-0.8.2/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] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "cdcfdb8256eecc9d1a8e07fee4f13e84c74f1cdfcfbaf467d8657d0d62a31632"`
[INFO] running `"docker" "rm" "-f" "cdcfdb8256eecc9d1a8e07fee4f13e84c74f1cdfcfbaf467d8657d0d62a31632"`
[INFO] [stdout] cdcfdb8256eecc9d1a8e07fee4f13e84c74f1cdfcfbaf467d8657d0d62a31632