[INFO] updating cached repository KonishchevDmitry/transmission-controller
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/KonishchevDmitry/transmission-controller
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/KonishchevDmitry/transmission-controller" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/KonishchevDmitry/transmission-controller"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/KonishchevDmitry/transmission-controller'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/KonishchevDmitry/transmission-controller" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/KonishchevDmitry/transmission-controller"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/KonishchevDmitry/transmission-controller'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 26a74d6b42faae93d4e0da69125074491fbbbde5
[INFO] sha for GitHub repo KonishchevDmitry/transmission-controller: 26a74d6b42faae93d4e0da69125074491fbbbde5
[INFO] validating manifest of KonishchevDmitry/transmission-controller on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of KonishchevDmitry/transmission-controller on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing KonishchevDmitry/transmission-controller
[INFO] finished frobbing KonishchevDmitry/transmission-controller
[INFO] frobbed toml for KonishchevDmitry/transmission-controller written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/KonishchevDmitry/transmission-controller/Cargo.toml
[INFO] started frobbing KonishchevDmitry/transmission-controller
[INFO] finished frobbing KonishchevDmitry/transmission-controller
[INFO] frobbed toml for KonishchevDmitry/transmission-controller written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/KonishchevDmitry/transmission-controller/Cargo.toml
[INFO] crate KonishchevDmitry/transmission-controller already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking KonishchevDmitry/transmission-controller against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-7/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/KonishchevDmitry/transmission-controller:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c1b43d60b2421c7471e9ccda1646dabf92f5f8d836e2318efbbc5c75e94e3f4d
[INFO] running `"docker" "start" "-a" "c1b43d60b2421c7471e9ccda1646dabf92f5f8d836e2318efbbc5c75e94e3f4d"`
[INFO] [stderr]     Checking fast_chemail v0.9.5
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking dirs v1.0.4
[INFO] [stderr]     Checking num-bigint v0.2.1
[INFO] [stderr]     Checking num-iter v0.1.37
[INFO] [stderr]     Checking parking_lot_core v0.3.1
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking email v0.0.20
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking lettre v0.9.1
[INFO] [stderr]     Checking chan-signal v0.3.2
[INFO] [stderr]     Checking parking_lot v0.6.4
[INFO] [stderr]     Checking tokio-reactor v0.1.7
[INFO] [stderr]     Checking num-rational v0.2.1
[INFO] [stderr]     Checking tokio-uds v0.2.4
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.2
[INFO] [stderr]     Checking num v0.2.0
[INFO] [stderr]     Checking tokio-threadpool v0.1.9
[INFO] [stderr]     Checking lettre_email v0.9.1
[INFO] [stderr]     Checking tokio-fs v0.1.4
[INFO] [stderr]     Checking tokio v0.1.13
[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-0.9.1/src/lib.rs:139:66
[INFO] [stderr]     |
[INFO] [stderr] 139 |         self.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" "c1b43d60b2421c7471e9ccda1646dabf92f5f8d836e2318efbbc5c75e94e3f4d"`
[INFO] running `"docker" "rm" "-f" "c1b43d60b2421c7471e9ccda1646dabf92f5f8d836e2318efbbc5c75e94e3f4d"`
[INFO] [stdout] c1b43d60b2421c7471e9ccda1646dabf92f5f8d836e2318efbbc5c75e94e3f4d