[INFO] crate batsat 0.3.1 is already in cache
[INFO] extracting crate batsat 0.3.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/batsat/0.3.1
[INFO] extracting crate batsat 0.3.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/batsat/0.3.1
[INFO] validating manifest of batsat-0.3.1 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 batsat-0.3.1 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 batsat-0.3.1
[INFO] finished frobbing batsat-0.3.1
[INFO] frobbed toml for batsat-0.3.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/batsat/0.3.1/Cargo.toml
[INFO] started frobbing batsat-0.3.1
[INFO] finished frobbing batsat-0.3.1
[INFO] frobbed toml for batsat-0.3.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/batsat/0.3.1/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 batsat-0.3.1 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-3/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/batsat/0.3.1:/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=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] 609f73855ec4a94ad7bf38ed86f21599532269cdf42744eb59ef8849315dfeaa
[INFO] running `"docker" "start" "-a" "609f73855ec4a94ad7bf38ed86f21599532269cdf42744eb59ef8849315dfeaa"`
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling batsat v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `from_idx`
[INFO] [stderr]   --> src/clause.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub(crate) fn from_idx(idx: u32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lits`
[INFO] [stderr]    --> src/clause.rs:442:5
[INFO] [stderr]     |
[INFO] [stderr] 442 |     pub fn lits(& self) -> &'a [Lit] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.63s
[INFO] running `"docker" "inspect" "609f73855ec4a94ad7bf38ed86f21599532269cdf42744eb59ef8849315dfeaa"`
[INFO] running `"docker" "rm" "-f" "609f73855ec4a94ad7bf38ed86f21599532269cdf42744eb59ef8849315dfeaa"`
[INFO] [stdout] 609f73855ec4a94ad7bf38ed86f21599532269cdf42744eb59ef8849315dfeaa
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/batsat/0.3.1:/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=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] 4069ad30cdbc831220e1b0aa65d364d86b445532cd778b1abacb21c4800fb1a3
[INFO] running `"docker" "start" "-a" "4069ad30cdbc831220e1b0aa65d364d86b445532cd778b1abacb21c4800fb1a3"`
[INFO] [stderr]    Compiling batsat v0.3.1 (/opt/crater/workdir)
[INFO] [stderr] warning: method is never used: `from_idx`
[INFO] [stderr]   --> src/clause.rs:82:5
[INFO] [stderr]    |
[INFO] [stderr] 82 |     pub(crate) fn from_idx(idx: u32) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `lits`
[INFO] [stderr]    --> src/clause.rs:442:5
[INFO] [stderr]     |
[INFO] [stderr] 442 |     pub fn lits(& self) -> &'a [Lit] {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.05s
[INFO] running `"docker" "inspect" "4069ad30cdbc831220e1b0aa65d364d86b445532cd778b1abacb21c4800fb1a3"`
[INFO] running `"docker" "rm" "-f" "4069ad30cdbc831220e1b0aa65d364d86b445532cd778b1abacb21c4800fb1a3"`
[INFO] [stdout] 4069ad30cdbc831220e1b0aa65d364d86b445532cd778b1abacb21c4800fb1a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/batsat/0.3.1:/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=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] c052bf191565886390322a849cc39f5eea389887007d465896d306a363a689e5
[INFO] running `"docker" "start" "-a" "c052bf191565886390322a849cc39f5eea389887007d465896d306a363a689e5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/batsat-5fc436903a286f57
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test clause::test::test_eq ... ok
[INFO] [stdout] test clause::test::test_cref_undef_special ... ok
[INFO] [stdout] test clause::test::test_not ... ok
[INFO] [stdout] test clause::test::test_bitxor ... ok
[INFO] [stdout] test clause::test::test_bitand ... ok
[INFO] [stdout] test clause::test::test_bitor ... ok
[INFO] [stdout] test clause::test::test_size_clause_data ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests batsat
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/clause.rs - clause::display::Print::pp_dimacs (line 859) ... ok
[INFO] [stdout] test src/clause.rs - clause::Lit::apply_sign (line 100) ... 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" "c052bf191565886390322a849cc39f5eea389887007d465896d306a363a689e5"`
[INFO] running `"docker" "rm" "-f" "c052bf191565886390322a849cc39f5eea389887007d465896d306a363a689e5"`
[INFO] [stdout] c052bf191565886390322a849cc39f5eea389887007d465896d306a363a689e5