[INFO] updating cached repository Charles-Johnson/zia
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Charles-Johnson/zia
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Charles-Johnson/zia" "work/ex/beta-1.37-6/sources/1.36.0/gh/Charles-Johnson/zia"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Charles-Johnson/zia'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Charles-Johnson/zia" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 27df02008cf064f8857b5c6e646519f306307ea9
[INFO] sha for GitHub repo Charles-Johnson/zia: 27df02008cf064f8857b5c6e646519f306307ea9
[INFO] validating manifest of Charles-Johnson/zia on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Charles-Johnson/zia on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Charles-Johnson/zia
[INFO] finished frobbing Charles-Johnson/zia
[INFO] frobbed toml for Charles-Johnson/zia written to work/ex/beta-1.37-6/sources/1.36.0/gh/Charles-Johnson/zia/Cargo.toml
[INFO] started frobbing Charles-Johnson/zia
[INFO] finished frobbing Charles-Johnson/zia
[INFO] frobbed toml for Charles-Johnson/zia written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Charles-Johnson/zia against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] a75fa81fe2d5abc4106117c49b182ac83351dbaced8568769e36aac39fccbd8e
[INFO] running `"docker" "start" "-a" "a75fa81fe2d5abc4106117c49b182ac83351dbaced8568769e36aac39fccbd8e"`
[INFO] [stderr]    Compiling zia v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:120:25
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     let mut leftc = try!(self.concept_from_ast(left));
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:121:25
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     let mut rightc = try!(self.concept_from_ast(right));
[INFO] [stderr]     |                         ----^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.51s
[INFO] running `"docker" "inspect" "a75fa81fe2d5abc4106117c49b182ac83351dbaced8568769e36aac39fccbd8e"`
[INFO] running `"docker" "rm" "-f" "a75fa81fe2d5abc4106117c49b182ac83351dbaced8568769e36aac39fccbd8e"`
[INFO] [stdout] a75fa81fe2d5abc4106117c49b182ac83351dbaced8568769e36aac39fccbd8e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 441feb1b4563e71cdd340b9d3bd79b471b3ab2f2034a86768d2f0cc6002ea2a9
[INFO] running `"docker" "start" "-a" "441feb1b4563e71cdd340b9d3bd79b471b3ab2f2034a86768d2f0cc6002ea2a9"`
[INFO] [stderr]    Compiling zia v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:120:25
[INFO] [stderr]     |
[INFO] [stderr] 120 |                     let mut leftc = try!(self.concept_from_ast(left));
[INFO] [stderr]     |                         ----^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:121:25
[INFO] [stderr]     |
[INFO] [stderr] 121 |                     let mut rightc = try!(self.concept_from_ast(right));
[INFO] [stderr]     |                         ----^^^^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.16s
[INFO] running `"docker" "inspect" "441feb1b4563e71cdd340b9d3bd79b471b3ab2f2034a86768d2f0cc6002ea2a9"`
[INFO] running `"docker" "rm" "-f" "441feb1b4563e71cdd340b9d3bd79b471b3ab2f2034a86768d2f0cc6002ea2a9"`
[INFO] [stdout] 441feb1b4563e71cdd340b9d3bd79b471b3ab2f2034a86768d2f0cc6002ea2a9
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Charles-Johnson/zia:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] 3cca77a22ca90a345fba10950f513070a559fbd3b023195c697084e0c43f1e74
[INFO] running `"docker" "start" "-a" "3cca77a22ca90a345fba10950f513070a559fbd3b023195c697084e0c43f1e74"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zia-5ed7f2146512216b
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test translating::tokens::pair ... ok
[INFO] [stdout] test translating::tokens::lambda ... ok
[INFO] [stdout] test translating::tokens::triplet ... ok
[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/definitions-77ba991d74086d5e
[INFO] [stdout] running 18 tests
[INFO] [stdout] test chained_definitions_loop ... ok
[INFO] [stdout] test definition_loop ... ok
[INFO] [stdout] test fresh_pair ... ok
[INFO] [stdout] test defining_fresh_symbol_as_used_pair ... ok
[INFO] [stdout] test fresh_nested_pairs ... ok
[INFO] [stdout] test defining_used_symbol_as_used_pair ... ok
[INFO] [stdout] test bad_refactor ... ok
[INFO] [stdout] test defining_used_symbol_as_fresh_pair ... ok
[INFO] [stdout] test old_pair ... ok
[INFO] [stdout] test pair_on_the_left ... ok
[INFO] [stdout] test nested_definition_loop ... ok
[INFO] [stdout] test fresh_refactor ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test fresh_symbol ... ok
[INFO] [stdout] test remove_definition ... ok
[INFO] [stdout] test setting_definition_of_concrete ... ok
[INFO] [stdout] test redundantly_remove_definition ... ok
[INFO] [stdout] test refactor ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/definitions_and_reductions-03ad2d6f5fae7f72
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test sneeky_infinite_reduction_chain ... ok
[INFO] [stdout] test reducing_nested_definition ... ok
[INFO] [stdout] test indirect_reduction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/program_recognition-72632c83c140b8e9
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test used_symbol_in_a_nested_pair_is_not_a_program ... ok
[INFO] [stdout] test fresh_pair_is_not_a_program ... ok
[INFO] [stdout] test used_symbol_in_a_pair_is_not_a_program ... ok
[INFO] [stdout] test symbol_whose_normal_form_is_a_program ... ok
[INFO] [stdout] test used_symbol_is_not_a_program ... ok
[INFO] [stdout] test fresh_nested_pair_is_not_a_program ... ok
[INFO] [stdout] test fresh_symbol_is_not_a_program ... ok
[INFO] [stdout] test symbol_whose_definition_is_a_program_is_a_program ... ok
[INFO] [stdout] test symbol_whose_normal_form_is_a_builtin_concept ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reductions-88a3c187bffce411
[INFO] [stdout] 
[INFO] [stdout] running 14 tests
[INFO] [stdout] test chain ... ok
[INFO] [stdout] test broken_end_chain ... ok
[INFO] [stdout] test broken_middle_chain ... ok
[INFO] [stdout] test change_reduction_rule ... ok
[INFO] [stdout] test infinite_expansion ... ok
[INFO] [stdout] test leapfrog_reduction_rule ... ok
[INFO] [stdout] test pair_to_symbol ... ok
[INFO] [stdout] test nested_pairs_to_symbol ... ok
[INFO] [stdout] test cycle ... ok
[INFO] [stdout] test trivial_parentheses ... ok
[INFO] [stdout] test remove_reduction ... ok
[INFO] [stdout] test symbol_to_symbol ... ok
[INFO] [stdout] test reducing_concrete ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 14 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/syntax-e198f966372e7ba0
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test ambiguous_expression ... ok
[INFO] [stdout] test empty_parentheses ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests zia
[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" "3cca77a22ca90a345fba10950f513070a559fbd3b023195c697084e0c43f1e74"`
[INFO] running `"docker" "rm" "-f" "3cca77a22ca90a345fba10950f513070a559fbd3b023195c697084e0c43f1e74"`
[INFO] [stdout] 3cca77a22ca90a345fba10950f513070a559fbd3b023195c697084e0c43f1e74