[INFO] fetching crate zia 0.2.1...
[INFO] extracting crate zia 0.2.1 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/zia/0.2.1
[INFO] extracting crate zia 0.2.1 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/zia/0.2.1
[INFO] validating manifest of zia-0.2.1 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zia-0.2.1 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zia-0.2.1
[INFO] finished frobbing zia-0.2.1
[INFO] frobbed toml for zia-0.2.1 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/zia/0.2.1/Cargo.toml
[INFO] started frobbing zia-0.2.1
[INFO] finished frobbing zia-0.2.1
[INFO] frobbed toml for zia-0.2.1 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/zia/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "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" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded test_zia v0.2.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] testing zia-0.2.1 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/zia/0.2.1:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] fa86f6ef20ab1ad010985f5cd629d13a11c4adda653914e4191780363b7b290c
[INFO] running `"docker" "start" "-a" "fa86f6ef20ab1ad010985f5cd629d13a11c4adda653914e4191780363b7b290c"`
[INFO] [stderr]    Compiling slog v2.4.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling isatty v0.1.9
[INFO] [stderr]    Compiling term v0.5.2
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling slog-term v2.4.0
[INFO] [stderr]    Compiling zia v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:160:25
[INFO] [stderr]     |
[INFO] [stderr] 160 |                     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:161:25
[INFO] [stderr]     |
[INFO] [stderr] 161 |                     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 15.77s
[INFO] running `"docker" "inspect" "fa86f6ef20ab1ad010985f5cd629d13a11c4adda653914e4191780363b7b290c"`
[INFO] running `"docker" "rm" "-f" "fa86f6ef20ab1ad010985f5cd629d13a11c4adda653914e4191780363b7b290c"`
[INFO] [stdout] fa86f6ef20ab1ad010985f5cd629d13a11c4adda653914e4191780363b7b290c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/zia/0.2.1:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] ee7f0b9e3913c192c88998164cad5af9f4db943648d8e026e397cb94972b595a
[INFO] running `"docker" "start" "-a" "ee7f0b9e3913c192c88998164cad5af9f4db943648d8e026e397cb94972b595a"`
[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 bit-set v0.5.1
[INFO] [stderr]    Compiling tempfile v3.0.8
[INFO] [stderr]    Compiling rusty-fork v0.2.2
[INFO] [stderr]    Compiling proptest v0.9.4
[INFO] [stderr]    Compiling test_zia v0.2.0
[INFO] [stderr]    Compiling zia v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/adding.rs:160:25
[INFO] [stderr]     |
[INFO] [stderr] 160 |                     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:161:25
[INFO] [stderr]     |
[INFO] [stderr] 161 |                     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 1m 00s
[INFO] running `"docker" "inspect" "ee7f0b9e3913c192c88998164cad5af9f4db943648d8e026e397cb94972b595a"`
[INFO] running `"docker" "rm" "-f" "ee7f0b9e3913c192c88998164cad5af9f4db943648d8e026e397cb94972b595a"`
[INFO] [stdout] ee7f0b9e3913c192c88998164cad5af9f4db943648d8e026e397cb94972b595a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-2/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/zia/0.2.1:/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=forbid" "-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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] d98ad04abbdb7bbcd68481eb858be49fc911a509d19169c774367a62dc776b35
[INFO] running `"docker" "start" "-a" "d98ad04abbdb7bbcd68481eb858be49fc911a509d19169c774367a62dc776b35"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/zia-067d899585dd65fe
[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-58039f0d411dd04c
[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 setting_definition_of_concrete ... ok
[INFO] [stdout] test definition_loop ... ok
[INFO] [stdout] test pair_on_the_left ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test bad_refactor ... ok
[INFO] [stdout] test chained_definitions_loop ... 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-f54575a81b1a311a
[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-f50f18f9b4df595e
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test fresh_symbol_is_not_a_program ... ok
[INFO] [stdout] test used_symbol_is_not_a_program ... ok
[INFO] [stdout] test fresh_pair_is_not_a_program ... ok
[INFO] [stdout] test symbol_whose_normal_form_is_a_program_is_a_program ... ok
[INFO] [stdout] test pair_whose_normal_form_is_a_builtin_concept ... ok
[INFO] [stdout] test fresh_nested_pair_is_not_a_program ... ok
[INFO] [stdout] test used_symbol_in_a_pair_is_not_a_program ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reductions-2e57ae40cd671dc7
[INFO] [stdout] test used_symbol_in_a_nested_pair_is_not_a_program ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 10 tests
[INFO] [stdout] test infinite_expansion ... ok
[INFO] [stdout] test nested_pair_to_symbol ... ok
[INFO] [stdout] test pair_to_symbol ... ok
[INFO] [stdout] test trivial_parentheses ... ok
[INFO] [stdout] test cycle ... ok
[INFO] [stdout] test change_reduction_rule ... ok
[INFO] [stdout] test leapfrog_reduction_rule ... ok
[INFO] [stdout] test redundancy ... ok
[INFO] [stdout] test broken_end_chain ... ok
[INFO] [stdout] test broken_middle_chain ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/syntax-668845487cdd0fb8
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 10 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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" "d98ad04abbdb7bbcd68481eb858be49fc911a509d19169c774367a62dc776b35"`
[INFO] running `"docker" "rm" "-f" "d98ad04abbdb7bbcd68481eb858be49fc911a509d19169c774367a62dc776b35"`
[INFO] [stdout] d98ad04abbdb7bbcd68481eb858be49fc911a509d19169c774367a62dc776b35