[INFO] fetching crate rust-tour 0.1.17...
[INFO] testing rust-tour-0.1.17 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate rust-tour 0.1.17 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate rust-tour 0.1.17
[INFO] finished tweaking crates.io crate rust-tour 0.1.17
[INFO] tweaked toml for crates.io crate rust-tour 0.1.17 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rust-tour 0.1.17 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate rust-tour 0.1.17 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a6b366c237f62e9aea8411163da15039a19355c32c2daf60b2b8eb7c350493ef
[INFO] running `Command { std: "docker" "start" "-a" "a6b366c237f62e9aea8411163da15039a19355c32c2daf60b2b8eb7c350493ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6b366c237f62e9aea8411163da15039a19355c32c2daf60b2b8eb7c350493ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6b366c237f62e9aea8411163da15039a19355c32c2daf60b2b8eb7c350493ef", kill_on_drop: false }`
[INFO] [stdout] a6b366c237f62e9aea8411163da15039a19355c32c2daf60b2b8eb7c350493ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71348eb3e79762df0a7c4d19e9ab5a8c9555f2867de4f5a3bc3c1e52f4928401
[INFO] running `Command { std: "docker" "start" "-a" "71348eb3e79762df0a7c4d19e9ab5a8c9555f2867de4f5a3bc3c1e52f4928401", kill_on_drop: false }`
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[INFO] [stderr] warning: rust-tour@0.1.17: Using pre-copied assets for packaging
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[INFO] [stdout] warning: field `session_id` is never read
[INFO] [stdout]    --> src/main.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct TerminalSession {
[INFO] [stdout]     |        --------------- field in this struct
[INFO] [stdout] 108 |     session_id: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TerminalSession` has derived impls for the traits `Clone` and `Debug`, but these are 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] warning: associated function `error` is never used
[INFO] [stdout]    --> src/main.rs:398:8
[INFO] [stdout]     |
[INFO] [stdout] 377 | impl<T> ApiResponse<T> {
[INFO] [stdout]     | ---------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 398 |     fn error(message: String) -> ApiResponse<()> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_total_exercises` is never used
[INFO] [stdout]     --> src/main.rs:1901:10
[INFO] [stdout]      |
[INFO] [stdout] 1901 | async fn count_total_exercises(exercises_path: &std::path::Path) -> anyhow::Result<u32> {
[INFO] [stdout]      |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 619 |     cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 619 |     let _ = cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5m 35s
[INFO] running `Command { std: "docker" "inspect" "71348eb3e79762df0a7c4d19e9ab5a8c9555f2867de4f5a3bc3c1e52f4928401", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71348eb3e79762df0a7c4d19e9ab5a8c9555f2867de4f5a3bc3c1e52f4928401", kill_on_drop: false }`
[INFO] [stdout] 71348eb3e79762df0a7c4d19e9ab5a8c9555f2867de4f5a3bc3c1e52f4928401
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0b9e72f3df53a6eb00fcc734dad4b696cd3dd88ced7c318f95c247a7c91c0bfc
[INFO] running `Command { std: "docker" "start" "-a" "0b9e72f3df53a6eb00fcc734dad4b696cd3dd88ced7c318f95c247a7c91c0bfc", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-tour v0.1.17 (/opt/rustwide/workdir)
[INFO] [stderr] warning: rust-tour@0.1.17: Using pre-copied assets for packaging
[INFO] [stdout] warning: field `session_id` is never read
[INFO] [stdout]    --> src/main.rs:108:5
[INFO] [stdout]     |
[INFO] [stdout] 107 | struct TerminalSession {
[INFO] [stdout]     |        --------------- field in this struct
[INFO] [stdout] 108 |     session_id: String,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TerminalSession` has derived impls for the traits `Clone` and `Debug`, but these are 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] warning: associated function `error` is never used
[INFO] [stdout]    --> src/main.rs:398:8
[INFO] [stdout]     |
[INFO] [stdout] 377 | impl<T> ApiResponse<T> {
[INFO] [stdout]     | ---------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 398 |     fn error(message: String) -> ApiResponse<()> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `count_total_exercises` is never used
[INFO] [stdout]     --> src/main.rs:1901:10
[INFO] [stdout]      |
[INFO] [stdout] 1901 | async fn count_total_exercises(exercises_path: &std::path::Path) -> anyhow::Result<u32> {
[INFO] [stdout]      |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/main.rs:619:5
[INFO] [stdout]     |
[INFO] [stdout] 619 |     cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 619 |     let _ = cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.93s
[INFO] running `Command { std: "docker" "inspect" "0b9e72f3df53a6eb00fcc734dad4b696cd3dd88ced7c318f95c247a7c91c0bfc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b9e72f3df53a6eb00fcc734dad4b696cd3dd88ced7c318f95c247a7c91c0bfc", kill_on_drop: false }`
[INFO] [stdout] 0b9e72f3df53a6eb00fcc734dad4b696cd3dd88ced7c318f95c247a7c91c0bfc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 3b543e40380a539bf07cd9b25917caa0f1f50597658df0bffdc51671b4a1d704
[INFO] running `Command { std: "docker" "start" "-a" "3b543e40380a539bf07cd9b25917caa0f1f50597658df0bffdc51671b4a1d704", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-tour v0.1.17 (/opt/rustwide/workdir)
[INFO] [stderr] warning: rust-tour@0.1.17: Using pre-copied assets for packaging
[INFO] [stderr] warning: field `session_id` is never read
[INFO] [stderr]    --> src/main.rs:108:5
[INFO] [stderr]     |
[INFO] [stderr] 107 | struct TerminalSession {
[INFO] [stderr]     |        --------------- field in this struct
[INFO] [stderr] 108 |     session_id: String,
[INFO] [stderr]     |     ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `TerminalSession` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `error` is never used
[INFO] [stderr]    --> src/main.rs:398:8
[INFO] [stderr]     |
[INFO] [stderr] 377 | impl<T> ApiResponse<T> {
[INFO] [stderr]     | ---------------------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 398 |     fn error(message: String) -> ApiResponse<()> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `count_total_exercises` is never used
[INFO] [stderr]     --> src/main.rs:1901:10
[INFO] [stderr]      |
[INFO] [stderr] 1901 | async fn count_total_exercises(exercises_path: &std::path::Path) -> anyhow::Result<u32> {
[INFO] [stderr]      |          ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/main.rs:619:5
[INFO] [stderr]     |
[INFO] [stderr] 619 |     cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 619 |     let _ = cleanup_terminal_sessions(&state, connection_id).await;
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-tour` (bin "rust-tour" test) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.95s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_tour-3e204c99ab08bf2f)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3b543e40380a539bf07cd9b25917caa0f1f50597658df0bffdc51671b4a1d704", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b543e40380a539bf07cd9b25917caa0f1f50597658df0bffdc51671b4a1d704", kill_on_drop: false }`
[INFO] [stdout] 3b543e40380a539bf07cd9b25917caa0f1f50597658df0bffdc51671b4a1d704