[INFO] updating cached repository smoench/maexchen
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/smoench/maexchen
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/smoench/maexchen" "work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/smoench/maexchen" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smoench/maexchen"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smoench/maexchen'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] bd22f41af3bb12d42ad992e243d8631e79b1865a
[INFO] sha for GitHub repo smoench/maexchen: bd22f41af3bb12d42ad992e243d8631e79b1865a
[INFO] validating manifest of smoench/maexchen 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 smoench/maexchen 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 smoench/maexchen
[INFO] finished frobbing smoench/maexchen
[INFO] frobbed toml for smoench/maexchen written to work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen/Cargo.toml
[INFO] started frobbing smoench/maexchen
[INFO] finished frobbing smoench/maexchen
[INFO] frobbed toml for smoench/maexchen written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/smoench/maexchen/Cargo.toml
[INFO] crate smoench/maexchen 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 smoench/maexchen against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] fd8efd42469e48acf70026c024a47a17169ed7e2420f3cb595f34d0a4704008d
[INFO] running `"docker" "start" "-a" "fd8efd42469e48acf70026c024a47a17169ed7e2420f3cb595f34d0a4704008d"`
[INFO] [stderr]    Compiling maexchen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `last_announced_dice` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut last_announced_dice: String = String::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_last_announced_dice` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last_announced_dice` is never read
[INFO] [stderr]   --> src/main.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             last_announced_dice = split_msg[2].to_string();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash`
[INFO] [stderr]    --> src/main.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let hash: Vec<&str> = vec![
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_hash`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:111:15
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     |               ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     |                          ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_greater`
[INFO] [stderr]    --> src/main.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `"docker" "inspect" "fd8efd42469e48acf70026c024a47a17169ed7e2420f3cb595f34d0a4704008d"`
[INFO] running `"docker" "rm" "-f" "fd8efd42469e48acf70026c024a47a17169ed7e2420f3cb595f34d0a4704008d"`
[INFO] [stdout] fd8efd42469e48acf70026c024a47a17169ed7e2420f3cb595f34d0a4704008d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] ee50feb9e7b357a8087c535d368ed90d5f31b2534ccbd480b467eb270dea7e96
[INFO] running `"docker" "start" "-a" "ee50feb9e7b357a8087c535d368ed90d5f31b2534ccbd480b467eb270dea7e96"`
[INFO] [stderr]    Compiling maexchen v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `last_announced_dice` is assigned to, but never used
[INFO] [stderr]   --> src/main.rs:13:13
[INFO] [stderr]    |
[INFO] [stderr] 13 |     let mut last_announced_dice: String = String::new();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr]    = note: consider using `_last_announced_dice` instead
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `last_announced_dice` is never read
[INFO] [stderr]   --> src/main.rs:63:13
[INFO] [stderr]    |
[INFO] [stderr] 63 |             last_announced_dice = split_msg[2].to_string();
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hash`
[INFO] [stderr]    --> src/main.rs:112:9
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let hash: Vec<&str> = vec![
[INFO] [stderr]     |         ^^^^ help: consider prefixing with an underscore: `_hash`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/main.rs:111:15
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     |               ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/main.rs:111:26
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     |                          ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `is_greater`
[INFO] [stderr]    --> src/main.rs:111:1
[INFO] [stderr]     |
[INFO] [stderr] 111 | fn is_greater(a: String, b: String) -> bool {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `"docker" "inspect" "ee50feb9e7b357a8087c535d368ed90d5f31b2534ccbd480b467eb270dea7e96"`
[INFO] running `"docker" "rm" "-f" "ee50feb9e7b357a8087c535d368ed90d5f31b2534ccbd480b467eb270dea7e96"`
[INFO] [stdout] ee50feb9e7b357a8087c535d368ed90d5f31b2534ccbd480b467eb270dea7e96
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/smoench/maexchen:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 98ae1bf0e67563f23b331e9cfc2a8982d27e2920fa315a11cc21dcd0135e7de4
[INFO] running `"docker" "start" "-a" "98ae1bf0e67563f23b331e9cfc2a8982d27e2920fa315a11cc21dcd0135e7de4"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/maexchen-b9de86094cb5435f
[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" "98ae1bf0e67563f23b331e9cfc2a8982d27e2920fa315a11cc21dcd0135e7de4"`
[INFO] running `"docker" "rm" "-f" "98ae1bf0e67563f23b331e9cfc2a8982d27e2920fa315a11cc21dcd0135e7de4"`
[INFO] [stdout] 98ae1bf0e67563f23b331e9cfc2a8982d27e2920fa315a11cc21dcd0135e7de4