[INFO] cloning repository https://github.com/mjul/zai-rust-free-monad-interpreter [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mjul/zai-rust-free-monad-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjul%2Fzai-rust-free-monad-interpreter", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjul%2Fzai-rust-free-monad-interpreter'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 02be0c8469952d0728710f8bba93d5e713b58411 [INFO] testing mjul/zai-rust-free-monad-interpreter against beta-2025-09-21 for beta-1.91-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjul%2Fzai-rust-free-monad-interpreter" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/mjul/zai-rust-free-monad-interpreter [INFO] finished tweaking git repo https://github.com/mjul/zai-rust-free-monad-interpreter [INFO] tweaked toml for git repo https://github.com/mjul/zai-rust-free-monad-interpreter written to /workspace/builds/worker-2-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/mjul/zai-rust-free-monad-interpreter on toolchain beta-2025-09-21 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/mjul/zai-rust-free-monad-interpreter 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" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 84c3d558e60ca1027684f0ffb8860074f42019cf83e04e4bed574b6b4101ade7 [INFO] running `Command { std: "docker" "start" "-a" "84c3d558e60ca1027684f0ffb8860074f42019cf83e04e4bed574b6b4101ade7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "84c3d558e60ca1027684f0ffb8860074f42019cf83e04e4bed574b6b4101ade7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "84c3d558e60ca1027684f0ffb8860074f42019cf83e04e4bed574b6b4101ade7", kill_on_drop: false }` [INFO] [stdout] 84c3d558e60ca1027684f0ffb8860074f42019cf83e04e4bed574b6b4101ade7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 94b4d017e538230c6b845441adc23aea236fbdca39b17a962f6916a31c313320 [INFO] running `Command { std: "docker" "start" "-a" "94b4d017e538230c6b845441adc23aea236fbdca39b17a962f6916a31c313320", kill_on_drop: false }` [INFO] [stderr] Compiling zai-rust-free-monad-interpreter v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant `Append` is never constructed [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | enum MyFunctor { [INFO] [stdout] | --------- variant in this enum [INFO] [stdout] 3 | Append(String, String, A), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `append` is never used [INFO] [stdout] --> src/main.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 23 | impl MyFunctor { [INFO] [stdout] | -------------------- associated function in this implementation [INFO] [stdout] 24 | fn append(s1: String, s2: String, cont: A) -> Self { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `pure` and `fold` are never used [INFO] [stdout] --> src/main.rs:46:8 [INFO] [stdout] | [INFO] [stdout] 44 | impl Free { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 45 | // Create a pure value [INFO] [stdout] 46 | fn pure(x: A) -> Self { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 75 | fn fold(self, f: G, pure: impl Fn(A) -> B) -> B [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `free_append` is never used [INFO] [stdout] --> src/main.rs:110:4 [INFO] [stdout] | [INFO] [stdout] 110 | fn free_append(s1: String, s2: String) -> Free { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `liftF` should have a snake case name [INFO] [stdout] --> src/main.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | fn liftF(fa: MyFunctor>>) -> Self { [INFO] [stdout] | ^^^^^ help: convert the identifier to snake case: `lift_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.49s [INFO] running `Command { std: "docker" "inspect" "94b4d017e538230c6b845441adc23aea236fbdca39b17a962f6916a31c313320", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "94b4d017e538230c6b845441adc23aea236fbdca39b17a962f6916a31c313320", kill_on_drop: false }` [INFO] [stdout] 94b4d017e538230c6b845441adc23aea236fbdca39b17a962f6916a31c313320 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b5bc3b134da67fcde55d2a7999bab86bc958dcc72a9c737bace04273f4654ea7 [INFO] running `Command { std: "docker" "start" "-a" "b5bc3b134da67fcde55d2a7999bab86bc958dcc72a9c737bace04273f4654ea7", kill_on_drop: false }` [INFO] [stderr] Compiling zai-rust-free-monad-interpreter v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: variant `Append` is never constructed [INFO] [stdout] --> src/main.rs:3:5 [INFO] [stdout] | [INFO] [stdout] 2 | enum MyFunctor { [INFO] [stdout] | --------- variant in this enum [INFO] [stdout] 3 | Append(String, String, A), [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `append` is never used [INFO] [stdout] --> src/main.rs:24:8 [INFO] [stdout] | [INFO] [stdout] 23 | impl MyFunctor { [INFO] [stdout] | -------------------- associated function in this implementation [INFO] [stdout] 24 | fn append(s1: String, s2: String, cont: A) -> Self { [INFO] [stdout] | ^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated items `pure` and `fold` are never used [INFO] [stdout] --> src/main.rs:46:8 [INFO] [stdout] | [INFO] [stdout] 44 | impl Free { [INFO] [stdout] | --------------- associated items in this implementation [INFO] [stdout] 45 | // Create a pure value [INFO] [stdout] 46 | fn pure(x: A) -> Self { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 75 | fn fold(self, f: G, pure: impl Fn(A) -> B) -> B [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `free_append` is never used [INFO] [stdout] --> src/main.rs:110:4 [INFO] [stdout] | [INFO] [stdout] 110 | fn free_append(s1: String, s2: String) -> Free { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `liftF` should have a snake case name [INFO] [stdout] --> src/main.rs:51:8 [INFO] [stdout] | [INFO] [stdout] 51 | fn liftF(fa: MyFunctor>>) -> Self { [INFO] [stdout] | ^^^^^ help: convert the identifier to snake case: `lift_f` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.26s [INFO] running `Command { std: "docker" "inspect" "b5bc3b134da67fcde55d2a7999bab86bc958dcc72a9c737bace04273f4654ea7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b5bc3b134da67fcde55d2a7999bab86bc958dcc72a9c737bace04273f4654ea7", kill_on_drop: false }` [INFO] [stdout] b5bc3b134da67fcde55d2a7999bab86bc958dcc72a9c737bace04273f4654ea7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }` [INFO] [stdout] 0480067e631bf454847d12f7a16350f7d6fccc032ba327f8408790f9717c93a0 [INFO] running `Command { std: "docker" "start" "-a" "0480067e631bf454847d12f7a16350f7d6fccc032ba327f8408790f9717c93a0", kill_on_drop: false }` [INFO] [stderr] warning: variant `Append` is never constructed [INFO] [stderr] --> src/main.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 2 | enum MyFunctor { [INFO] [stderr] | --------- variant in this enum [INFO] [stderr] 3 | Append(String, String, A), [INFO] [stderr] | ^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: associated function `append` is never used [INFO] [stderr] --> src/main.rs:24:8 [INFO] [stderr] | [INFO] [stderr] 23 | impl MyFunctor { [INFO] [stderr] | -------------------- associated function in this implementation [INFO] [stderr] 24 | fn append(s1: String, s2: String, cont: A) -> Self { [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: associated items `pure` and `fold` are never used [INFO] [stderr] --> src/main.rs:46:8 [INFO] [stderr] | [INFO] [stderr] 44 | impl Free { [INFO] [stderr] | --------------- associated items in this implementation [INFO] [stderr] 45 | // Create a pure value [INFO] [stderr] 46 | fn pure(x: A) -> Self { [INFO] [stderr] | ^^^^ [INFO] [stderr] ... [INFO] [stderr] 75 | fn fold(self, f: G, pure: impl Fn(A) -> B) -> B [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: function `free_append` is never used [INFO] [stderr] --> src/main.rs:110:4 [INFO] [stderr] | [INFO] [stderr] 110 | fn free_append(s1: String, s2: String) -> Free { [INFO] [stderr] | ^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method `liftF` should have a snake case name [INFO] [stderr] --> src/main.rs:51:8 [INFO] [stderr] | [INFO] [stderr] 51 | fn liftF(fa: MyFunctor>>) -> Self { [INFO] [stderr] | ^^^^^ help: convert the identifier to snake case: `lift_f` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default [INFO] [stderr] [INFO] [stderr] warning: `zai-rust-free-monad-interpreter` (bin "zai-rust-free-monad-interpreter" test) generated 5 warnings [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running unittests src/main.rs (/opt/rustwide/target/debug/deps/zai_rust_free_monad_interpreter-bc8f822c0e588c92) [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" "0480067e631bf454847d12f7a16350f7d6fccc032ba327f8408790f9717c93a0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0480067e631bf454847d12f7a16350f7d6fccc032ba327f8408790f9717c93a0", kill_on_drop: false }` [INFO] [stdout] 0480067e631bf454847d12f7a16350f7d6fccc032ba327f8408790f9717c93a0