[INFO] cloning repository https://github.com/Lettuce222/wy_cash
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Lettuce222/wy_cash" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLettuce222%2Fwy_cash", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLettuce222%2Fwy_cash'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c9194b04d854d7f9a4265f3748c0fd7f5e784c24
[INFO] testing Lettuce222/wy_cash against try#a7ce54db9b096bd1098d07c645b489195a667c9f for pr-137940
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLettuce222%2Fwy_cash" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Lettuce222/wy_cash on toolchain a7ce54db9b096bd1098d07c645b489195a667c9f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Lettuce222/wy_cash
[INFO] finished tweaking git repo https://github.com/Lettuce222/wy_cash
[INFO] tweaked toml for git repo https://github.com/Lettuce222/wy_cash written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/Lettuce222/wy_cash 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" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 954ec7e8c7982bfd293d539172c641cae1821664cea685e941543efdc6532705
[INFO] running `Command { std: "docker" "start" "-a" "954ec7e8c7982bfd293d539172c641cae1821664cea685e941543efdc6532705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "954ec7e8c7982bfd293d539172c641cae1821664cea685e941543efdc6532705", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "954ec7e8c7982bfd293d539172c641cae1821664cea685e941543efdc6532705", kill_on_drop: false }`
[INFO] [stdout] 954ec7e8c7982bfd293d539172c641cae1821664cea685e941543efdc6532705
[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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3877d2b36fc56a9470b31e62a30f2d954267a1c9010d82deaf1aa23c32d89b21
[INFO] running `Command { std: "docker" "start" "-a" "3877d2b36fc56a9470b31e62a30f2d954267a1c9010d82deaf1aa23c32d89b21", kill_on_drop: false }`
[INFO] [stderr]    Compiling wy_cash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]   --> src/main.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn reduce(&self, to: Currency) -> Money {
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Money` is never constructed
[INFO] [stdout]  --> src/main.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Money {
[INFO] [stdout]   |        ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Currency` is never used
[INFO] [stdout]   --> src/main.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | enum Currency {
[INFO] [stdout]    |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `dollar`, `franc`, `times`, and `plus` are never used
[INFO] [stdout]   --> src/main.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Money {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 18 |     fn dollar(amount: i32) -> Money {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 24 |     fn franc(amount: i32) -> Money {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     fn times(&self, multiplier: i32) -> Money {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 38 |     fn plus(&self, addend: &Money) -> Sum {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Expression` is never used
[INFO] [stdout]   --> src/main.rs:52:7
[INFO] [stdout]    |
[INFO] [stdout] 52 | trait Expression {
[INFO] [stdout]    |       ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Bank` is never constructed
[INFO] [stdout]   --> src/main.rs:62:8
[INFO] [stdout]    |
[INFO] [stdout] 62 | struct Bank {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `reduce` is never used
[INFO] [stdout]   --> src/main.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | impl Bank {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] 65 |     fn reduce(&self, source: impl Expression, to: Currency) -> Money {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sum` is never constructed
[INFO] [stdout]   --> src/main.rs:70:8
[INFO] [stdout]    |
[INFO] [stdout] 70 | struct Sum {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "3877d2b36fc56a9470b31e62a30f2d954267a1c9010d82deaf1aa23c32d89b21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3877d2b36fc56a9470b31e62a30f2d954267a1c9010d82deaf1aa23c32d89b21", kill_on_drop: false }`
[INFO] [stdout] 3877d2b36fc56a9470b31e62a30f2d954267a1c9010d82deaf1aa23c32d89b21
[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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb8493fb41c6b7771c41f96538d558b959ae4075c025e683fdebe5918b6db223
[INFO] running `Command { std: "docker" "start" "-a" "bb8493fb41c6b7771c41f96538d558b959ae4075c025e683fdebe5918b6db223", kill_on_drop: false }`
[INFO] [stderr]    Compiling wy_cash v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `to`
[INFO] [stdout]   --> src/main.rs:57:22
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn reduce(&self, to: Currency) -> Money {
[INFO] [stdout]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "bb8493fb41c6b7771c41f96538d558b959ae4075c025e683fdebe5918b6db223", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb8493fb41c6b7771c41f96538d558b959ae4075c025e683fdebe5918b6db223", kill_on_drop: false }`
[INFO] [stdout] bb8493fb41c6b7771c41f96538d558b959ae4075c025e683fdebe5918b6db223
[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=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@sha256:1680c8fbd8dfb46fcd6d22e546df16ab0e007457dc29fcd9e987cdd5077fd1af" "/opt/rustwide/cargo-home/bin/cargo" "+a7ce54db9b096bd1098d07c645b489195a667c9f" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] d8b859d591b4c4ff88e061deeefe15ad4c53e77c0cee694f6b3454ba02f15bb5
[INFO] running `Command { std: "docker" "start" "-a" "d8b859d591b4c4ff88e061deeefe15ad4c53e77c0cee694f6b3454ba02f15bb5", kill_on_drop: false }`
[INFO] [stderr] warning: unused variable: `to`
[INFO] [stderr]   --> src/main.rs:57:22
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn reduce(&self, to: Currency) -> Money {
[INFO] [stderr]    |                      ^^ help: if this is intentional, prefix it with an underscore: `_to`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `wy_cash` (bin "wy_cash" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/wy_cash-5e0faa84ead7f020)
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test_currency ... ok
[INFO] [stdout] test test_equality ... ok
[INFO] [stdout] test test_multiplication ... ok
[INFO] [stdout] test test_plus_returns_sum ... ok
[INFO] [stdout] test test_reduce_money ... ok
[INFO] [stdout] test test_reduce_sum ... ok
[INFO] [stdout] test test_simple_addition ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "d8b859d591b4c4ff88e061deeefe15ad4c53e77c0cee694f6b3454ba02f15bb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d8b859d591b4c4ff88e061deeefe15ad4c53e77c0cee694f6b3454ba02f15bb5", kill_on_drop: false }`
[INFO] [stdout] d8b859d591b4c4ff88e061deeefe15ad4c53e77c0cee694f6b3454ba02f15bb5