[INFO] updating cached repository FreeMasen/analytics
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/FreeMasen/analytics
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/FreeMasen/analytics" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/FreeMasen/analytics"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/FreeMasen/analytics'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/FreeMasen/analytics" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/FreeMasen/analytics"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/FreeMasen/analytics'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1a5158cac025b8865febc514727ee1561b33170c
[INFO] sha for GitHub repo FreeMasen/analytics: 1a5158cac025b8865febc514727ee1561b33170c
[INFO] validating manifest of FreeMasen/analytics on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of FreeMasen/analytics on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing FreeMasen/analytics
[INFO] finished frobbing FreeMasen/analytics
[INFO] frobbed toml for FreeMasen/analytics written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/FreeMasen/analytics/Cargo.toml
[INFO] started frobbing FreeMasen/analytics
[INFO] finished frobbing FreeMasen/analytics
[INFO] frobbed toml for FreeMasen/analytics written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/FreeMasen/analytics/Cargo.toml
[INFO] crate FreeMasen/analytics already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking FreeMasen/analytics against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/FreeMasen/analytics:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 926d8ce0d57b6af0c6ba9e4a270f23bf99aac9dd34ca385cf29b3c0b4802068f
[INFO] running `"docker" "start" "-a" "926d8ce0d57b6af0c6ba9e4a270f23bf99aac9dd34ca385cf29b3c0b4802068f"`
[INFO] [stderr]    Compiling encoding_rs v0.8.15
[INFO] [stderr]     Checking wcwidth v1.0.1
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking memchr v1.0.2
[INFO] [stderr]     Checking socket2 v0.3.8
[INFO] [stderr]     Checking uuid v0.6.5
[INFO] [stderr]     Checking nom v4.2.0
[INFO] [stderr]     Checking stringprep v0.1.2
[INFO] [stderr]     Checking crypto-mac v0.6.2
[INFO] [stderr]     Checking block-buffer v0.7.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking input_buffer v0.2.0
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking md-5 v0.7.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling headers-derive v0.1.0
[INFO] [stderr]     Checking hmac v0.6.3
[INFO] [stderr]     Checking term-table v1.1.0
[INFO] [stderr]     Checking postgres-protocol v0.3.2
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking sha-1 v0.8.1
[INFO] [stderr]     Checking uuid v0.7.2
[INFO] [stderr]     Checking tungstenite v0.6.1
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking lettre v0.8.3
[INFO] [stderr]     Checking email v0.0.20
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking postgres-shared v0.4.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking headers v0.2.1
[INFO] [stderr]     Checking uap-rust v0.0.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking postgres v0.15.2
[INFO] [stderr]     Checking tokio-fs v0.1.5
[INFO] [stderr]     Checking lettre_email v0.8.3
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking tera v0.11.20
[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" "926d8ce0d57b6af0c6ba9e4a270f23bf99aac9dd34ca385cf29b3c0b4802068f"`
[INFO] running `"docker" "rm" "-f" "926d8ce0d57b6af0c6ba9e4a270f23bf99aac9dd34ca385cf29b3c0b4802068f"`
[INFO] [stdout] 926d8ce0d57b6af0c6ba9e4a270f23bf99aac9dd34ca385cf29b3c0b4802068f