[INFO] updating cached repository mvniekerk/rust-imap-notifier
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/mvniekerk/rust-imap-notifier
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/mvniekerk/rust-imap-notifier" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvniekerk/rust-imap-notifier"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvniekerk/rust-imap-notifier'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/mvniekerk/rust-imap-notifier" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvniekerk/rust-imap-notifier"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvniekerk/rust-imap-notifier'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d1da3cc702bd40bb48639027887ba4392c07a9e8
[INFO] sha for GitHub repo mvniekerk/rust-imap-notifier: d1da3cc702bd40bb48639027887ba4392c07a9e8
[INFO] validating manifest of mvniekerk/rust-imap-notifier 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 mvniekerk/rust-imap-notifier 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 mvniekerk/rust-imap-notifier
[INFO] finished frobbing mvniekerk/rust-imap-notifier
[INFO] frobbed toml for mvniekerk/rust-imap-notifier written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/mvniekerk/rust-imap-notifier/Cargo.toml
[INFO] started frobbing mvniekerk/rust-imap-notifier
[INFO] finished frobbing mvniekerk/rust-imap-notifier
[INFO] frobbed toml for mvniekerk/rust-imap-notifier written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvniekerk/rust-imap-notifier/Cargo.toml
[INFO] crate mvniekerk/rust-imap-notifier 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 mvniekerk/rust-imap-notifier against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-6/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/mvniekerk/rust-imap-notifier:/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] 55669e3b17f079baf246110d7e17c1111ec09d4b4fda5da51903f3eedc101ca2
[INFO] running `"docker" "start" "-a" "55669e3b17f079baf246110d7e17c1111ec09d4b4fda5da51903f3eedc101ca2"`
[INFO] [stderr]    Compiling context v2.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.45
[INFO] [stderr]     Checking imap-proto v0.7.0
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-threadpool v0.1.14
[INFO] [stderr]     Checking serde v1.0.90
[INFO] [stderr]     Checking notify-rust v3.5.0
[INFO] [stderr]     Checking notifica v1.0.2
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]    Compiling openssl v0.10.21
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.19
[INFO] [stderr]     Checking corona v0.4.1
[INFO] [stderr]     Checking imap v1.0.1
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking rust-imap-notifier v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `tokio::prelude::*`
[INFO] [stderr]  --> src/model/imap.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tokio::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::runtime::current_thread`
[INFO] [stderr]  --> src/model/imap.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tokio::runtime::current_thread;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::prelude::*`
[INFO] [stderr]  --> src/model/imap.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use tokio::prelude::*;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `tokio::runtime::current_thread`
[INFO] [stderr]  --> src/model/imap.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use tokio::runtime::current_thread;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/model/imap.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         println!("Should be start polling {:#?}", config);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     Coroutine::new().run(|| {
[INFO] [stderr] 58 | |         for cfg in config.connections {
[INFO] [stderr] 59 | |             model::imap::start_polling(&cfg);
[INFO] [stderr] 60 | |         }
[INFO] [stderr] 61 | |     });
[INFO] [stderr]    | |_______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/model/imap.rs:72:9
[INFO] [stderr]    |
[INFO] [stderr] 72 |         println!("Should be start polling {:#?}", config);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/main.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 | /     Coroutine::new().run(|| {
[INFO] [stderr] 58 | |         for cfg in config.connections {
[INFO] [stderr] 59 | |             model::imap::start_polling(&cfg);
[INFO] [stderr] 60 | |         }
[INFO] [stderr] 61 | |     });
[INFO] [stderr]    | |_______^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.54s
[INFO] running `"docker" "inspect" "55669e3b17f079baf246110d7e17c1111ec09d4b4fda5da51903f3eedc101ca2"`
[INFO] running `"docker" "rm" "-f" "55669e3b17f079baf246110d7e17c1111ec09d4b4fda5da51903f3eedc101ca2"`
[INFO] [stdout] 55669e3b17f079baf246110d7e17c1111ec09d4b4fda5da51903f3eedc101ca2