[INFO] crate zia 0.3.2 is already in cache
[INFO] extracting crate zia 0.3.2 into work/ex/beta-1.38-1/sources/1.37.0/reg/zia/0.3.2
[INFO] extracting crate zia 0.3.2 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/zia/0.3.2
[INFO] validating manifest of zia-0.3.2 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 zia-0.3.2 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 zia-0.3.2
[INFO] finished frobbing zia-0.3.2
[INFO] frobbed toml for zia-0.3.2 written to work/ex/beta-1.38-1/sources/1.37.0/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-1.38-1/sources/beta-2019-08-13/reg/zia/0.3.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 zia-0.3.2 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-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "build" "--frozen"`
[INFO] [stdout] cd4a571c7fb8509b833dbe6beffadd1c15506d2269c89ac94e9e6c830992b2f0
[INFO] running `"docker" "start" "-a" "cd4a571c7fb8509b833dbe6beffadd1c15506d2269c89ac94e9e6c830992b2f0"`
[INFO] [stderr]    Compiling slog v2.5.2
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.7
[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 13.63s
[INFO] running `"docker" "inspect" "cd4a571c7fb8509b833dbe6beffadd1c15506d2269c89ac94e9e6c830992b2f0"`
[INFO] running `"docker" "rm" "-f" "cd4a571c7fb8509b833dbe6beffadd1c15506d2269c89ac94e9e6c830992b2f0"`
[INFO] [stdout] cd4a571c7fb8509b833dbe6beffadd1c15506d2269c89ac94e9e6c830992b2f0
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 1c07a0f77923a840f2762e6340cb6f4b10a3013eaa14bb5f680d0282c527c2a3
[INFO] running `"docker" "start" "-a" "1c07a0f77923a840f2762e6340cb6f4b10a3013eaa14bb5f680d0282c527c2a3"`
[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 40.92s
[INFO] running `"docker" "inspect" "1c07a0f77923a840f2762e6340cb6f4b10a3013eaa14bb5f680d0282c527c2a3"`
[INFO] running `"docker" "rm" "-f" "1c07a0f77923a840f2762e6340cb6f4b10a3013eaa14bb5f680d0282c527c2a3"`
[INFO] [stdout] 1c07a0f77923a840f2762e6340cb6f4b10a3013eaa14bb5f680d0282c527c2a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/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-2019-08-13" "test" "--frozen"`
[INFO] [stdout] fed3464bc8fedcc566582ddb14f9aa9a9fbcbafcdef77912337b52ece0a30b2e
[INFO] running `"docker" "start" "-a" "fed3464bc8fedcc566582ddb14f9aa9a9fbcbafcdef77912337b52ece0a30b2e"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zia-1907981e6ab2318e
[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] [stderr]      Running /opt/crater/target/debug/deps/definitions-866b18fab39fc05b
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test fresh_symbol ... ok
[INFO] [stdout] test fresh_refactor ... ok
[INFO] [stdout] test nested_definition_loop ... ok
[INFO] [stdout] test definition_loop ... ok
[INFO] [stdout] test pair_on_the_left ... ok
[INFO] [stdout] test bad_refactor ... ok
[INFO] [stdout] test setting_definition_of_concrete ... ok
[INFO] [stdout] test chained_definitions_loop ... 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-81de61b63ee08c1a
[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] [stderr]      Running /opt/crater/target/debug/deps/program_recognition-cd48fc0cf11ccae2
[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] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test fresh_pair_does_not_reduce ... ok
[INFO] [stdout] test fresh_symbol_is_not_a_program ... ok
[INFO] [stdout] test fresh_nested_pair_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] test used_symbol_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] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reductions-cfd7de9c6cc7af3d
[INFO] [stdout] running 10 tests
[INFO] [stdout] test infinite_expansion ... ok
[INFO] [stdout] test pair_to_symbol ... ok
[INFO] [stdout] test cycle ... ok
[INFO] [stdout] test nested_pair_to_symbol ... ok
[INFO] [stdout] test trivial_parentheses ... ok
[INFO] [stdout] test change_reduction_rule ... ok
[INFO] [stdout] test broken_end_chain ... ok
[INFO] [stdout] test leapfrog_reduction_rule ... ok
[INFO] [stdout] test redundancy ... 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-93fd322b5619466a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test empty_parentheses ... ok
[INFO] [stdout] test ambiguous_expression ... ok
[INFO] [stderr]    Doc-tests zia
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "fed3464bc8fedcc566582ddb14f9aa9a9fbcbafcdef77912337b52ece0a30b2e"`
[INFO] running `"docker" "rm" "-f" "fed3464bc8fedcc566582ddb14f9aa9a9fbcbafcdef77912337b52ece0a30b2e"`
[INFO] [stdout] fed3464bc8fedcc566582ddb14f9aa9a9fbcbafcdef77912337b52ece0a30b2e