[INFO] cloning repository https://github.com/lshlyapnikov/grokking-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lshlyapnikov/grokking-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5cce67cceb595b89af1df13426ddd9d453c86a06
[INFO] building lshlyapnikov/grokking-rust against try#615edd3ad1cf6871c977dc900317cb6c2070fd6b for pr-97334
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flshlyapnikov%2Fgrokking-rust" "/workspace/builds/worker-28/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-28/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lshlyapnikov/grokking-rust on toolchain 615edd3ad1cf6871c977dc900317cb6c2070fd6b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lshlyapnikov/grokking-rust
[INFO] finished tweaking git repo https://github.com/lshlyapnikov/grokking-rust
[INFO] tweaked toml for git repo https://github.com/lshlyapnikov/grokking-rust written to /workspace/builds/worker-28/source/Cargo.toml
[INFO] crate git repo https://github.com/lshlyapnikov/grokking-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a90d24c7b49ea75c7cf0458c14982a7c3dff1b587eb3b2a07ee28a1b0fddf94
[INFO] running `Command { std: "docker" "start" "-a" "0a90d24c7b49ea75c7cf0458c14982a7c3dff1b587eb3b2a07ee28a1b0fddf94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a90d24c7b49ea75c7cf0458c14982a7c3dff1b587eb3b2a07ee28a1b0fddf94", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a90d24c7b49ea75c7cf0458c14982a7c3dff1b587eb3b2a07ee28a1b0fddf94", kill_on_drop: false }`
[INFO] [stdout] 0a90d24c7b49ea75c7cf0458c14982a7c3dff1b587eb3b2a07ee28a1b0fddf94
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 43a7e36cb84205348d39ef978483528eaf497aba19aec6618ff3a2635d64e370
[INFO] running `Command { std: "docker" "start" "-a" "43a7e36cb84205348d39ef978483528eaf497aba19aec6618ff3a2635d64e370", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.65
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.3.5
[INFO] [stderr]    Compiling quickcheck v0.2.27
[INFO] [stderr]    Compiling grokking-rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `volumes`
[INFO] [stdout]   --> src/grok/waterpouring.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 |   let volumes: Vec<usize> = vec![0, max_volumes.len()];
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_volumes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `required_volume`
[INFO] [stdout]   --> src/grok/waterpouring.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec<usize>, required_volume: usize) -> State {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_required_volume`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fill`
[INFO] [stdout]  --> src/grok/waterpouring.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Fill { glass: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/grok/waterpouring.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Empty { glass: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Transfer`
[INFO] [stdout]  --> src/grok/waterpouring.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   Transfer { from: usize, to: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]   --> src/grok/waterpouring.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec<usize>, required_volume: usize) -> State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 00s
[INFO] running `Command { std: "docker" "inspect" "43a7e36cb84205348d39ef978483528eaf497aba19aec6618ff3a2635d64e370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43a7e36cb84205348d39ef978483528eaf497aba19aec6618ff3a2635d64e370", kill_on_drop: false }`
[INFO] [stdout] 43a7e36cb84205348d39ef978483528eaf497aba19aec6618ff3a2635d64e370
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:ac0d0aa6ec8ed129e241004a6179c99fa0d2616f50ba759c5b60bd26d0fafa02" "/opt/rustwide/cargo-home/bin/cargo" "+615edd3ad1cf6871c977dc900317cb6c2070fd6b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 464fbd2d9cea876798eb02f986bf3b40582aef4ce73ef6521ee758520bc560a9
[INFO] running `Command { std: "docker" "start" "-a" "464fbd2d9cea876798eb02f986bf3b40582aef4ce73ef6521ee758520bc560a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling grokking-rust v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `volumes`
[INFO] [stdout]   --> src/grok/waterpouring.rs:40:7
[INFO] [stdout]    |
[INFO] [stdout] 40 |   let volumes: Vec<usize> = vec![0, max_volumes.len()];
[INFO] [stdout]    |       ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_volumes`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `required_volume`
[INFO] [stdout]   --> src/grok/waterpouring.rs:39:40
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec<usize>, required_volume: usize) -> State {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_required_volume`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Fill`
[INFO] [stdout]  --> src/grok/waterpouring.rs:5:3
[INFO] [stdout]   |
[INFO] [stdout] 5 |   Fill { glass: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Empty`
[INFO] [stdout]  --> src/grok/waterpouring.rs:6:3
[INFO] [stdout]   |
[INFO] [stdout] 6 |   Empty { glass: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Transfer`
[INFO] [stdout]  --> src/grok/waterpouring.rs:7:3
[INFO] [stdout]   |
[INFO] [stdout] 7 |   Transfer { from: usize, to: usize },
[INFO] [stdout]   |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout] note: `Action` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]  --> src/grok/waterpouring.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[derive(Clone, Debug)]
[INFO] [stdout]   |          ^^^^^  ^^^^^
[INFO] [stdout]   = note: this warning originates in the derive macro `Clone` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `solve`
[INFO] [stdout]   --> src/grok/waterpouring.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve(max_volumes: &Vec<usize>, required_volume: usize) -> State {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.58s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/grokking_rust-b3b2dce3b610b41c)
[INFO] running `Command { std: "docker" "inspect" "464fbd2d9cea876798eb02f986bf3b40582aef4ce73ef6521ee758520bc560a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "464fbd2d9cea876798eb02f986bf3b40582aef4ce73ef6521ee758520bc560a9", kill_on_drop: false }`
[INFO] [stdout] 464fbd2d9cea876798eb02f986bf3b40582aef4ce73ef6521ee758520bc560a9