[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 1.90.0 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-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/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-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mjul/zai-rust-free-monad-interpreter on toolchain 1.90.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.90.0" "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" "+1.90.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.90.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4262a02b175058a53d8b5acf8d8700965d5818dfa22644b7d3ef653cc3e96ace
[INFO] running `Command { std: "docker" "start" "-a" "4262a02b175058a53d8b5acf8d8700965d5818dfa22644b7d3ef653cc3e96ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4262a02b175058a53d8b5acf8d8700965d5818dfa22644b7d3ef653cc3e96ace", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4262a02b175058a53d8b5acf8d8700965d5818dfa22644b7d3ef653cc3e96ace", kill_on_drop: false }`
[INFO] [stdout] 4262a02b175058a53d8b5acf8d8700965d5818dfa22644b7d3ef653cc3e96ace
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.90.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eaddf82e7c447cabbb5992cc936e081efbb2bb9e4b17fa72a1c7f7c47e8eca03
[INFO] running `Command { std: "docker" "start" "-a" "eaddf82e7c447cabbb5992cc936e081efbb2bb9e4b17fa72a1c7f7c47e8eca03", 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<A> {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 3 |     Append(String, String, A),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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<A> MyFunctor<A> {
[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<A> Free<A> {
[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<B, G>(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<String> {
[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<Box<Free<A>>>) -> Self {
[INFO] [stdout]    |        ^^^^^ help: convert the identifier to snake case: `lift_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "eaddf82e7c447cabbb5992cc936e081efbb2bb9e4b17fa72a1c7f7c47e8eca03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaddf82e7c447cabbb5992cc936e081efbb2bb9e4b17fa72a1c7f7c47e8eca03", kill_on_drop: false }`
[INFO] [stdout] eaddf82e7c447cabbb5992cc936e081efbb2bb9e4b17fa72a1c7f7c47e8eca03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.90.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e81b46df71220362bdb3315a1baba7ff31217cabac1a6b74d00ed11c90956669
[INFO] running `Command { std: "docker" "start" "-a" "e81b46df71220362bdb3315a1baba7ff31217cabac1a6b74d00ed11c90956669", 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<A> {
[INFO] [stdout]   |      --------- variant in this enum
[INFO] [stdout] 3 |     Append(String, String, A),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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<A> MyFunctor<A> {
[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<A> Free<A> {
[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<B, G>(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<String> {
[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<Box<Free<A>>>) -> Self {
[INFO] [stdout]    |        ^^^^^ help: convert the identifier to snake case: `lift_f`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` 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" "e81b46df71220362bdb3315a1baba7ff31217cabac1a6b74d00ed11c90956669", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e81b46df71220362bdb3315a1baba7ff31217cabac1a6b74d00ed11c90956669", kill_on_drop: false }`
[INFO] [stdout] e81b46df71220362bdb3315a1baba7ff31217cabac1a6b74d00ed11c90956669
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "+1.90.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 778350343a217cbfa276240339e63111f0ddcaa5d043cc59421122c9c78b505d
[INFO] running `Command { std: "docker" "start" "-a" "778350343a217cbfa276240339e63111f0ddcaa5d043cc59421122c9c78b505d", 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<A> {
[INFO] [stderr]   |      --------- variant in this enum
[INFO] [stderr] 3 |     Append(String, String, A),
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` 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<A> MyFunctor<A> {
[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<A> Free<A> {
[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<B, G>(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<String> {
[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<Box<Free<A>>>) -> Self {
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to snake case: `lift_f`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` 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 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/zai_rust_free_monad_interpreter-be2055a8e155685c)
[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" "778350343a217cbfa276240339e63111f0ddcaa5d043cc59421122c9c78b505d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "778350343a217cbfa276240339e63111f0ddcaa5d043cc59421122c9c78b505d", kill_on_drop: false }`
[INFO] [stdout] 778350343a217cbfa276240339e63111f0ddcaa5d043cc59421122c9c78b505d