[INFO] cloning repository https://github.com/barower/imap-listener
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/barower/imap-listener" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarower%2Fimap-listener", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarower%2Fimap-listener'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6b2f8642f8be724dc360e3cf6eca92ce9f2bacb3
[INFO] checking barower/imap-listener against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbarower%2Fimap-listener" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/barower/imap-listener
[INFO] finished tweaking git repo https://github.com/barower/imap-listener
[INFO] tweaked toml for git repo https://github.com/barower/imap-listener written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/barower/imap-listener on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/barower/imap-listener already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5e121eb96468cb0ed14e24fa108940afd711c1490b50f8b0c781a313f0d95250
[INFO] running `Command { std: "docker" "start" "-a" "5e121eb96468cb0ed14e24fa108940afd711c1490b50f8b0c781a313f0d95250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5e121eb96468cb0ed14e24fa108940afd711c1490b50f8b0c781a313f0d95250", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e121eb96468cb0ed14e24fa108940afd711c1490b50f8b0c781a313f0d95250", kill_on_drop: false }`
[INFO] [stdout] 5e121eb96468cb0ed14e24fa108940afd711c1490b50f8b0c781a313f0d95250
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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 -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5649fd5e61293fc2fbd3f3b7dda811662c806c15999ef42d490f8f5a2fcf51a7
[INFO] running `Command { std: "docker" "start" "-a" "5649fd5e61293fc2fbd3f3b7dda811662c806c15999ef42d490f8f5a2fcf51a7", kill_on_drop: false }`
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling syn v1.0.88
[INFO] [stderr]     Checking encoding_index_tests v0.1.4
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking nom v7.1.1
[INFO] [stderr]    Compiling email v0.0.21
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking aliasable v0.1.3
[INFO] [stderr]    Compiling time-macros v0.2.4
[INFO] [stderr]     Checking num_threads v0.1.5
[INFO] [stderr]     Checking encoding-index-tradchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-singlebyte v1.20141219.5
[INFO] [stderr]     Checking encoding-index-korean v1.20141219.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking encoding-index-simpchinese v1.20141219.5
[INFO] [stderr]     Checking encoding-index-japanese v1.20141219.5
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking regex v1.5.5
[INFO] [stderr]     Checking bufstream v0.1.4
[INFO] [stderr]     Checking base64 v0.11.0
[INFO] [stderr]     Checking edit-distance v2.1.0
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking encoding v0.2.33
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking num-integer v0.1.44
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking time v0.3.9
[INFO] [stderr]     Checking imap-proto v0.15.0
[INFO] [stderr]     Checking simple_logger v2.1.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking serde_json v1.0.79
[INFO] [stderr]    Compiling ouroboros_macro v0.14.2
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]     Checking ouroboros v0.14.2
[INFO] [stderr]     Checking imap v3.0.0-alpha.6
[INFO] [stderr]     Checking structopt v0.3.26
[INFO] [stderr]     Checking imap-listener v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(short, long)]
[INFO] [stdout] 17 | |     server: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     #[structopt(short, long)]
[INFO] [stdout] 25 | |     username: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[structopt(short = "w", long)]
[INFO] [stdout] 32 | |     password: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     #[structopt(short, long, default_value = "INBOX")]
[INFO] [stdout] 36 | |     mailbox: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | /     #[structopt(long, default_value = "allowed_people.json")]
[INFO] [stdout] 44 | |     allowed_people: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     #[structopt(long, default_value = "triggering_subjects.json")]
[INFO] [stdout] 48 | |     triggering_subjects: String,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | /     #[structopt(short, long, default_value = "~/Music/kanapkiv2.wav")]
[INFO] [stdout] 56 | |     audio_file: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imap-listener` (bin "imap-listener") due to 7 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 | /     #[structopt(short, long)]
[INFO] [stdout] 17 | |     server: String,
[INFO] [stdout]    | |__________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | /     #[structopt(short, long)]
[INFO] [stdout] 25 | |     username: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:31:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     #[structopt(short = "w", long)]
[INFO] [stdout] 32 | |     password: String,
[INFO] [stdout]    | |____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:35:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | /     #[structopt(short, long, default_value = "INBOX")]
[INFO] [stdout] 36 | |     mailbox: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:43:5
[INFO] [stdout]    |
[INFO] [stdout] 43 | /     #[structopt(long, default_value = "allowed_people.json")]
[INFO] [stdout] 44 | |     allowed_people: String,
[INFO] [stdout]    | |__________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:47:5
[INFO] [stdout]    |
[INFO] [stdout] 47 | /     #[structopt(long, default_value = "triggering_subjects.json")]
[INFO] [stdout] 48 | |     triggering_subjects: String,
[INFO] [stdout]    | |_______________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<std::string::String, Infallible>
[INFO] [stdout]   --> src/main.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 | /     #[structopt(short, long, default_value = "~/Music/kanapkiv2.wav")]
[INFO] [stdout] 56 | |     audio_file: String,
[INFO] [stdout]    | |______________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `imap-listener` (bin "imap-listener" test) due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "5649fd5e61293fc2fbd3f3b7dda811662c806c15999ef42d490f8f5a2fcf51a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5649fd5e61293fc2fbd3f3b7dda811662c806c15999ef42d490f8f5a2fcf51a7", kill_on_drop: false }`
[INFO] [stdout] 5649fd5e61293fc2fbd3f3b7dda811662c806c15999ef42d490f8f5a2fcf51a7