[INFO] cloning repository https://github.com/kir68k/matrix-export-tool
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kir68k/matrix-export-tool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkir68k%2Fmatrix-export-tool", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkir68k%2Fmatrix-export-tool'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7e614754b3ea2f48805427c9c4cc123884772c4a
[INFO] checking kir68k/matrix-export-tool 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%2Fkir68k%2Fmatrix-export-tool" "/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/kir68k/matrix-export-tool
[INFO] finished tweaking git repo https://github.com/kir68k/matrix-export-tool
[INFO] tweaked toml for git repo https://github.com/kir68k/matrix-export-tool written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/kir68k/matrix-export-tool 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/kir68k/matrix-export-tool 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] 09e0057b3d4091a7f7880620014e2fc4330f86d2be893f2746b41bb68446623b
[INFO] running `Command { std: "docker" "start" "-a" "09e0057b3d4091a7f7880620014e2fc4330f86d2be893f2746b41bb68446623b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09e0057b3d4091a7f7880620014e2fc4330f86d2be893f2746b41bb68446623b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09e0057b3d4091a7f7880620014e2fc4330f86d2be893f2746b41bb68446623b", kill_on_drop: false }`
[INFO] [stdout] 09e0057b3d4091a7f7880620014e2fc4330f86d2be893f2746b41bb68446623b
[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] b6109f0269f9887db8f4b8b251619d15ea13746f18c0bf71a625b80171db61ae
[INFO] running `Command { std: "docker" "start" "-a" "b6109f0269f9887db8f4b8b251619d15ea13746f18c0bf71a625b80171db61ae", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/utils/cache/output_cache.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 |     sync::mpsc::{self, Receiver},
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]   --> src/utils/cache/output_cache.rs:18:18
[INFO] [stdout]    |
[INFO] [stdout] 18 |     sync::mpsc::{self, Receiver},
[INFO] [stdout]    |                  ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `user` is never read
[INFO] [stdout]   --> src/utils/cache/output_cache.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct FileCache {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 25 |     user: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileCache` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[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/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Promkit` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `matrix-export-tool` (bin "matrix-export-tool") due to 5 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: field `user` is never read
[INFO] [stdout]   --> src/utils/cache/output_cache.rs:25:5
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub struct FileCache {
[INFO] [stdout]    |            --------- field in this struct
[INFO] [stdout] 25 |     user: String,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `FileCache` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[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/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the derive macro `Promkit` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: ControlFlow<Result<Infallible, Infallible>, std::string::String>
[INFO] [stdout]   --> src/cli/interface.rs:16:26
[INFO] [stdout]    |
[INFO] [stdout] 16 | #[derive(Default, Debug, Promkit, Deserialize)]
[INFO] [stdout]    |                          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `matrix-export-tool` (bin "matrix-export-tool" test) due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "b6109f0269f9887db8f4b8b251619d15ea13746f18c0bf71a625b80171db61ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6109f0269f9887db8f4b8b251619d15ea13746f18c0bf71a625b80171db61ae", kill_on_drop: false }`
[INFO] [stdout] b6109f0269f9887db8f4b8b251619d15ea13746f18c0bf71a625b80171db61ae
