[INFO] updating cached repository MidgeOnGithub/vending-machine
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/MidgeOnGithub/vending-machine
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/MidgeOnGithub/vending-machine" "work/ex/beta-1.38-1/sources/1.37.0/gh/MidgeOnGithub/vending-machine"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/MidgeOnGithub/vending-machine'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/MidgeOnGithub/vending-machine" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b594de1b5439d492fdca466fe95bd087728fe9ab
[INFO] sha for GitHub repo MidgeOnGithub/vending-machine: b594de1b5439d492fdca466fe95bd087728fe9ab
[INFO] validating manifest of MidgeOnGithub/vending-machine on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of MidgeOnGithub/vending-machine on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing MidgeOnGithub/vending-machine
[INFO] finished frobbing MidgeOnGithub/vending-machine
[INFO] frobbed toml for MidgeOnGithub/vending-machine written to work/ex/beta-1.38-1/sources/1.37.0/gh/MidgeOnGithub/vending-machine/Cargo.toml
[INFO] started frobbing MidgeOnGithub/vending-machine
[INFO] finished frobbing MidgeOnGithub/vending-machine
[INFO] frobbed toml for MidgeOnGithub/vending-machine written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine/Cargo.toml
[INFO] crate MidgeOnGithub/vending-machine already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing MidgeOnGithub/vending-machine against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 99968fb9a36bd04d2a0506984e857cd89425e3771b7f07d30e28429e0a5f781b
[INFO] running `"docker" "start" "-a" "99968fb9a36bd04d2a0506984e857cd89425e3771b7f07d30e28429e0a5f781b"`
[INFO] [stderr]    Compiling vending_machine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::read_to_string`
[INFO] [stderr]  --> src/vending/cashier.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::read_to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::raw::c_void`
[INFO] [stderr]  --> src/vending/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::os::raw::c_void;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/vending/mod.rs:18:35
[INFO] [stderr]    |
[INFO] [stderr] 18 |             remainder => price += (NICKEL - remainder)
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `VendingItem`, `cashier::*`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     VendingItem,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 6 |     cashier::*
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coffers`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let coffers: MoneyBox = 0;
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_coffers`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.11s
[INFO] running `"docker" "inspect" "99968fb9a36bd04d2a0506984e857cd89425e3771b7f07d30e28429e0a5f781b"`
[INFO] running `"docker" "rm" "-f" "99968fb9a36bd04d2a0506984e857cd89425e3771b7f07d30e28429e0a5f781b"`
[INFO] [stdout] 99968fb9a36bd04d2a0506984e857cd89425e3771b7f07d30e28429e0a5f781b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 76df4d3286ec6fd2bb19514ec54ba0b5c9c8640a23e10500949755440ddd44ad
[INFO] running `"docker" "start" "-a" "76df4d3286ec6fd2bb19514ec54ba0b5c9c8640a23e10500949755440ddd44ad"`
[INFO] [stderr]    Compiling vending_machine v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::read_to_string`
[INFO] [stderr]  --> src/vending/cashier.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fs::read_to_string;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::os::raw::c_void`
[INFO] [stderr]  --> src/vending/mod.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::os::raw::c_void;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/vending/mod.rs:18:35
[INFO] [stderr]    |
[INFO] [stderr] 18 |             remainder => price += (NICKEL - remainder)
[INFO] [stderr]    |                                   ^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `VendingItem`, `cashier::*`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     VendingItem,
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 6 |     cashier::*
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `coffers`
[INFO] [stderr]   --> src/main.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let coffers: MoneyBox = 0;
[INFO] [stderr]    |         ^^^^^^^ help: consider prefixing with an underscore: `_coffers`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.59s
[INFO] running `"docker" "inspect" "76df4d3286ec6fd2bb19514ec54ba0b5c9c8640a23e10500949755440ddd44ad"`
[INFO] running `"docker" "rm" "-f" "76df4d3286ec6fd2bb19514ec54ba0b5c9c8640a23e10500949755440ddd44ad"`
[INFO] [stdout] 76df4d3286ec6fd2bb19514ec54ba0b5c9c8640a23e10500949755440ddd44ad
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/MidgeOnGithub/vending-machine:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] b3493fa6975cd78477eefb762fadb33e64f3a1924a7d5a5e5a3f397558166633
[INFO] running `"docker" "start" "-a" "b3493fa6975cd78477eefb762fadb33e64f3a1924a7d5a5e5a3f397558166633"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vending_machine-cd8c7b3f3978d39b
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test vending::cashier::correctly_decides_if_or_what_change_is_needed ... ok
[INFO] [stdout] test vending::cashier::makes_efficient_change ... ok
[INFO] [stdout] test vending::new_item_prices_rounded_if_needed ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/vending_machine_bin-7a160edc6fcc6101
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/integration_tests-5e4bbbcd10f0e950
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests vending_machine
[INFO] [stdout] running 1 test
[INFO] [stdout] test processes_purchases_as_expected ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b3493fa6975cd78477eefb762fadb33e64f3a1924a7d5a5e5a3f397558166633"`
[INFO] running `"docker" "rm" "-f" "b3493fa6975cd78477eefb762fadb33e64f3a1924a7d5a5e5a3f397558166633"`
[INFO] [stdout] b3493fa6975cd78477eefb762fadb33e64f3a1924a7d5a5e5a3f397558166633