[INFO] updating cached repository EFulmer/gawain
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/EFulmer/gawain
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/EFulmer/gawain" "work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/EFulmer/gawain" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EFulmer/gawain"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EFulmer/gawain'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] f053c11431c50f019b1aa2dd4371ed9754d6a1fe
[INFO] sha for GitHub repo EFulmer/gawain: f053c11431c50f019b1aa2dd4371ed9754d6a1fe
[INFO] validating manifest of EFulmer/gawain 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 EFulmer/gawain 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 EFulmer/gawain
[INFO] finished frobbing EFulmer/gawain
[INFO] frobbed toml for EFulmer/gawain written to work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain/Cargo.toml
[INFO] started frobbing EFulmer/gawain
[INFO] finished frobbing EFulmer/gawain
[INFO] frobbed toml for EFulmer/gawain written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/EFulmer/gawain/Cargo.toml
[INFO] crate EFulmer/gawain 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 EFulmer/gawain 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-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain:/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] e1d83cf72296711580419f96d0a3cb792c3a136b5906f6ca24f684534842ea9b
[INFO] running `"docker" "start" "-a" "e1d83cf72296711580419f96d0a3cb792c3a136b5906f6ca24f684534842ea9b"`
[INFO] [stderr]    Compiling gawain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `program`
[INFO] [stderr]   --> src/main.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn parse(program: &str) -> Val { 
[INFO] [stderr]    |          ^^^^^^^ help: consider prefixing with an underscore: `_program`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Symbol`
[INFO] [stderr]  --> src/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     Symbol(String),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `List`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     List(Vec<Val>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Int`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     Int(i32),
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Float`
[INFO] [stderr]  --> src/main.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Float(f64),
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokenize`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn tokenize(s: &str) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse`
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn parse(program: &str) -> Val { 
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_from_tokens`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn read_from_tokens(tokens: &mut Vec<String>) -> Val {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `atom`
[INFO] [stderr]   --> src/main.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn atom(s: &str) -> Val {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `"docker" "inspect" "e1d83cf72296711580419f96d0a3cb792c3a136b5906f6ca24f684534842ea9b"`
[INFO] running `"docker" "rm" "-f" "e1d83cf72296711580419f96d0a3cb792c3a136b5906f6ca24f684534842ea9b"`
[INFO] [stdout] e1d83cf72296711580419f96d0a3cb792c3a136b5906f6ca24f684534842ea9b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain:/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] 44a7e0f525cd4dd213fbdc6bbc0fe34ee038ccb94699860f5314d543ddce1f20
[INFO] running `"docker" "start" "-a" "44a7e0f525cd4dd213fbdc6bbc0fe34ee038ccb94699860f5314d543ddce1f20"`
[INFO] [stderr]    Compiling gawain v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `program`
[INFO] [stderr]   --> src/main.rs:17:10
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn parse(program: &str) -> Val { 
[INFO] [stderr]    |          ^^^^^^^ help: consider prefixing with an underscore: `_program`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `List`
[INFO] [stderr]  --> src/main.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     List(Vec<Val>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tokenize`
[INFO] [stderr]  --> src/main.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn tokenize(s: &str) -> String {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `parse`
[INFO] [stderr]   --> src/main.rs:17:1
[INFO] [stderr]    |
[INFO] [stderr] 17 | fn parse(program: &str) -> Val { 
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_from_tokens`
[INFO] [stderr]   --> src/main.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn read_from_tokens(tokens: &mut Vec<String>) -> Val {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.64s
[INFO] running `"docker" "inspect" "44a7e0f525cd4dd213fbdc6bbc0fe34ee038ccb94699860f5314d543ddce1f20"`
[INFO] running `"docker" "rm" "-f" "44a7e0f525cd4dd213fbdc6bbc0fe34ee038ccb94699860f5314d543ddce1f20"`
[INFO] [stdout] 44a7e0f525cd4dd213fbdc6bbc0fe34ee038ccb94699860f5314d543ddce1f20
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/EFulmer/gawain:/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] eb51db82af2685dc61fb22e4503c560059764591b64de0b93d8a3c2bbfe4b729
[INFO] running `"docker" "start" "-a" "eb51db82af2685dc61fb22e4503c560059764591b64de0b93d8a3c2bbfe4b729"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/gawain-35724f5d00ca8728
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::parse_float ... ok
[INFO] [stdout] test tests::parse_int ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "eb51db82af2685dc61fb22e4503c560059764591b64de0b93d8a3c2bbfe4b729"`
[INFO] running `"docker" "rm" "-f" "eb51db82af2685dc61fb22e4503c560059764591b64de0b93d8a3c2bbfe4b729"`
[INFO] [stdout] eb51db82af2685dc61fb22e4503c560059764591b64de0b93d8a3c2bbfe4b729