[INFO] cloning repository https://github.com/mvniekerk/rust-imap-notifier
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mvniekerk/rust-imap-notifier" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvniekerk%2Frust-imap-notifier", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvniekerk%2Frust-imap-notifier'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d1da3cc702bd40bb48639027887ba4392c07a9e8
[INFO] checking mvniekerk/rust-imap-notifier against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmvniekerk%2Frust-imap-notifier" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mvniekerk/rust-imap-notifier on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mvniekerk/rust-imap-notifier
[INFO] finished tweaking git repo https://github.com/mvniekerk/rust-imap-notifier
[INFO] tweaked toml for git repo https://github.com/mvniekerk/rust-imap-notifier written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/mvniekerk/rust-imap-notifier already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6f39021027e963e31511d4cdae07fa9c63dc2d3cc420807c86c12d7fbb4846a0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6f39021027e963e31511d4cdae07fa9c63dc2d3cc420807c86c12d7fbb4846a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6f39021027e963e31511d4cdae07fa9c63dc2d3cc420807c86c12d7fbb4846a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f39021027e963e31511d4cdae07fa9c63dc2d3cc420807c86c12d7fbb4846a0", kill_on_drop: false }`
[INFO] [stdout] 6f39021027e963e31511d4cdae07fa9c63dc2d3cc420807c86c12d7fbb4846a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5f304d5e2d588ea116ea8849417139e80b79775e8dd319e7b9e7a33521467c87
[INFO] running `Command { std: "docker" "start" "-a" "5f304d5e2d588ea116ea8849417139e80b79775e8dd319e7b9e7a33521467c87", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling bitflags v1.0.5
[INFO] [stderr]    Compiling syn v0.15.33
[INFO] [stderr]    Compiling context v2.1.0
[INFO] [stderr]     Checking dbus v0.6.4
[INFO] [stderr]     Checking imap-proto v0.7.0
[INFO] [stderr]     Checking error-chain v0.12.0
[INFO] [stderr]     Checking openssl v0.10.21
[INFO] [stderr]     Checking corona v0.4.1
[INFO] [stderr]     Checking notify-rust v3.5.0
[INFO] [stderr]     Checking notifica v1.0.2
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking imap v1.0.1
[INFO] [stderr]    Compiling serde_derive v1.0.90
[INFO] [stderr]     Checking serde v1.0.90
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking rust-imap-notifier v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/model/imap.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::current_thread`
[INFO] [stdout]  --> src/model/imap.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::runtime::current_thread;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::prelude::*`
[INFO] [stdout]  --> src/model/imap.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use tokio::prelude::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::runtime::current_thread`
[INFO] [stdout]  --> src/model/imap.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tokio::runtime::current_thread;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/model/imap.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | /         loop {
[INFO] [stdout] 16 | |             println!("Before wait {:#?}", config.email.refresh);
[INFO] [stdout] 17 | |             let timeout = Delay::new(clock::now() + Duration::from_secs(config.email.refresh));
[INFO] [stdout] 18 | |             println!("Timeout {:#?}", timeout);
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }
[INFO] [stdout] 31 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 72 |           println!("Should be start polling {:#?}", config);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     Coroutine::new().run(|| {
[INFO] [stdout] 58 | |         for cfg in config.connections {
[INFO] [stdout] 59 | |             model::imap::start_polling(&cfg);
[INFO] [stdout] 60 | |         }
[INFO] [stdout] 61 | |     });
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/model/imap.rs:72:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | /         loop {
[INFO] [stdout] 16 | |             println!("Before wait {:#?}", config.email.refresh);
[INFO] [stdout] 17 | |             let timeout = Delay::new(clock::now() + Duration::from_secs(config.email.refresh));
[INFO] [stdout] 18 | |             println!("Timeout {:#?}", timeout);
[INFO] [stdout] ...  |
[INFO] [stdout] 30 | |             }
[INFO] [stdout] 31 | |         }
[INFO] [stdout]    | |_________- any code following this expression is unreachable
[INFO] [stdout] ...
[INFO] [stdout] 72 |           println!("Should be start polling {:#?}", config);
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout]    = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/main.rs:57:5
[INFO] [stdout]    |
[INFO] [stdout] 57 | /     Coroutine::new().run(|| {
[INFO] [stdout] 58 | |         for cfg in config.connections {
[INFO] [stdout] 59 | |             model::imap::start_polling(&cfg);
[INFO] [stdout] 60 | |         }
[INFO] [stdout] 61 | |     });
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 49.29s
[INFO] running `Command { std: "docker" "inspect" "5f304d5e2d588ea116ea8849417139e80b79775e8dd319e7b9e7a33521467c87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f304d5e2d588ea116ea8849417139e80b79775e8dd319e7b9e7a33521467c87", kill_on_drop: false }`
[INFO] [stdout] 5f304d5e2d588ea116ea8849417139e80b79775e8dd319e7b9e7a33521467c87