[INFO] crate zia 0.3.2 is already in cache
[INFO] extracting crate zia 0.3.2 into work/ex/beta-1.37-6/sources/1.36.0/reg/zia/0.3.2
[INFO] extracting crate zia 0.3.2 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zia/0.3.2
[INFO] validating manifest of zia-0.3.2 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 zia-0.3.2 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 zia-0.3.2
[INFO] finished frobbing zia-0.3.2
[INFO] frobbed toml for zia-0.3.2 written to work/ex/beta-1.37-6/sources/1.36.0/reg/zia/0.3.2/Cargo.toml
[INFO] started frobbing zia-0.3.2
[INFO] finished frobbing zia-0.3.2
[INFO] frobbed toml for zia-0.3.2 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zia/0.3.2/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] [stderr]     Blocking waiting for file lock on package cache lock
[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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing zia-0.3.2 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-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zia/0.3.2:/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] a2e75a196b20cf03f7064ca401c85fe723c493978069f8216622721a705fd57d
[INFO] running `"docker" "start" "-a" "a2e75a196b20cf03f7064ca401c85fe723c493978069f8216622721a705fd57d"`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling slog-term v2.4.1
[INFO] [stderr]    Compiling zia v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:158:25
[INFO] [stderr]     |
[INFO] [stderr] 158 |                     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:159:25
[INFO] [stderr]     |
[INFO] [stderr] 159 |                     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 8.88s
[INFO] running `"docker" "inspect" "a2e75a196b20cf03f7064ca401c85fe723c493978069f8216622721a705fd57d"`
[INFO] running `"docker" "rm" "-f" "a2e75a196b20cf03f7064ca401c85fe723c493978069f8216622721a705fd57d"`
[INFO] [stdout] a2e75a196b20cf03f7064ca401c85fe723c493978069f8216622721a705fd57d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zia/0.3.2:/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] c6444bb419a388d3b5f9eb6a93919edcb15c010bd2c9a4110c167438429109c8
[INFO] running `"docker" "start" "-a" "c6444bb419a388d3b5f9eb6a93919edcb15c010bd2c9a4110c167438429109c8"`
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]    Compiling proptest v0.9.4
[INFO] [stderr]    Compiling test_zia v0.2.0
[INFO] [stderr]    Compiling zia v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:158:25
[INFO] [stderr]     |
[INFO] [stderr] 158 |                     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:159:25
[INFO] [stderr]     |
[INFO] [stderr] 159 |                     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 47.62s
[INFO] running `"docker" "inspect" "c6444bb419a388d3b5f9eb6a93919edcb15c010bd2c9a4110c167438429109c8"`
[INFO] running `"docker" "rm" "-f" "c6444bb419a388d3b5f9eb6a93919edcb15c010bd2c9a4110c167438429109c8"`
[INFO] [stdout] c6444bb419a388d3b5f9eb6a93919edcb15c010bd2c9a4110c167438429109c8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-3/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/zia/0.3.2:/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] 54fc289fc23e3310fd1a86ca46f2e4bb600a2a6a64bc291f6992b5a8c515dc4e
[INFO] running `"docker" "start" "-a" "54fc289fc23e3310fd1a86ca46f2e4bb600a2a6a64bc291f6992b5a8c515dc4e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zia-53cfa5e23e3e09ff
[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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/definitions-b9eef55e58339bab
[INFO] [stdout] running 11 tests
[INFO] [stdout] test fresh_symbol ... ok
[INFO] [stdout] test nested_definition_loop ... ok
[INFO] [stdout] test fresh_refactor ... ok
[INFO] [stdout] test definition_loop ... ok
[INFO] [stdout] test pair_on_the_left ... ok
[INFO] [stdout] test chained_definitions_loop ... ok
[INFO] [stdout] test bad_refactor ... ok
[INFO] [stdout] test setting_definition_of_concrete ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test redundantly_remove_definition ... ok
[INFO] [stdout] test defining_used_symbol_as_used_pair ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 11 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/definitions_and_reductions-01231ed016c9c3c6
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test sneeky_infinite_reduction_chain ... ok
[INFO] [stdout] test reducing_part_of_a_labelled_concept ... 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-783cad736a9edd73
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test fresh_symbol_is_not_a_program ... ok
[INFO] [stdout] test fresh_pair_does_not_reduce ... ok
[INFO] [stdout] test fresh_nested_pair_does_not_reduce ... ok
[INFO] [stdout] test used_symbol_does_not_reduce ... ok
[INFO] [stdout] test used_symbol_in_a_pair_does_not_reduce ... ok
[INFO] [stdout] test used_symbol_in_a_nested_pair_does_not_reduce ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reductions-6b815bc853f3d3f2
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test infinite_expansion ... ok
[INFO] [stdout] test pair_to_symbol ... ok
[INFO] [stdout] test nested_pair_to_symbol ... ok
[INFO] [stdout] test cycle ... ok
[INFO] [stdout] test trivial_parentheses ... ok
[INFO] [stdout] test leapfrog_reduction_rule ... ok
[INFO] [stdout] test change_reduction_rule ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test broken_end_chain ... ok
[INFO] [stdout] test broken_middle_chain ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/syntax-09fc788ba0666bce
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test empty_parentheses ... ok
[INFO] [stdout] test ambiguous_expression ... 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 1 test
[INFO] [stdout] test src/lib.rs -  (line 46) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "54fc289fc23e3310fd1a86ca46f2e4bb600a2a6a64bc291f6992b5a8c515dc4e"`
[INFO] running `"docker" "rm" "-f" "54fc289fc23e3310fd1a86ca46f2e4bb600a2a6a64bc291f6992b5a8c515dc4e"`
[INFO] [stdout] 54fc289fc23e3310fd1a86ca46f2e4bb600a2a6a64bc291f6992b5a8c515dc4e