[INFO] updating cached repository rolag/ruSAT
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/rolag/ruSAT
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/rolag/ruSAT" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/rolag/ruSAT"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/rolag/ruSAT'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/rolag/ruSAT" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/rolag/ruSAT"`
[INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/rolag/ruSAT'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5f450c9d7bffd15ead893c0688591dd24f41fb97
[INFO] sha for GitHub repo rolag/ruSAT: 5f450c9d7bffd15ead893c0688591dd24f41fb97
[INFO] validating manifest of rolag/ruSAT on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rolag/ruSAT on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rolag/ruSAT
[INFO] finished frobbing rolag/ruSAT
[INFO] frobbed toml for rolag/ruSAT written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/rolag/ruSAT/Cargo.toml
[INFO] started frobbing rolag/ruSAT
[INFO] finished frobbing rolag/ruSAT
[INFO] frobbed toml for rolag/ruSAT written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/rolag/ruSAT/Cargo.toml
[INFO] crate rolag/ruSAT already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking rolag/ruSAT against master#c43d03a19f326f4a323569328cc501e86eb6d22e for pr-63565
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-5/master#c43d03a19f326f4a323569328cc501e86eb6d22e:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/rolag/ruSAT:/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" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 086cb0912e3022710016d18fdfd6508eacf6a7fb2a51cde82ef1a89fcad3bb3f
[INFO] running `"docker" "start" "-a" "086cb0912e3022710016d18fdfd6508eacf6a7fb2a51cde82ef1a89fcad3bb3f"`
[INFO] [stderr]     Checking rusat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] error[E0599]: no method named `is_tautology` found for type `cnf_system::CNFClause` in the current scope
[INFO] [stderr]   --> src/cnf_system.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub struct CNFClause {
[INFO] [stderr]    | -------------------- method `is_tautology` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 66 |     assert!(clause.is_tautology());
[INFO] [stderr]    |                    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `is_tautology` found for type `cnf_system::CNFClause` in the current scope
[INFO] [stderr]    --> src/cnf_system.rs:102:21
[INFO] [stderr]     |
[INFO] [stderr] 14  | pub struct CNFClause {
[INFO] [stderr]     | -------------------- method `is_tautology` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 102 |     assert!(!clause.is_tautology());
[INFO] [stderr]     |                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `is_tautology` found for type `cnf_system::CNFClause` in the current scope
[INFO] [stderr]    --> src/cnf_system.rs:103:22
[INFO] [stderr]     |
[INFO] [stderr] 14  | pub struct CNFClause {
[INFO] [stderr]     | -------------------- method `is_tautology` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 103 |     assert!(!clause2.is_tautology());
[INFO] [stderr]     |                      ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0599]: no method named `is_tautology` found for type `cnf_system::CNFClause` in the current scope
[INFO] [stderr]    --> src/cnf_system.rs:110:20
[INFO] [stderr]     |
[INFO] [stderr] 14  | pub struct CNFClause {
[INFO] [stderr]     | -------------------- method `is_tautology` not found for this
[INFO] [stderr] ...
[INFO] [stderr] 110 |     assert!(clause.is_tautology());
[INFO] [stderr]     |                    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 4 previous errors
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0599`.
[INFO] [stderr] error: Could not compile `rusat`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "086cb0912e3022710016d18fdfd6508eacf6a7fb2a51cde82ef1a89fcad3bb3f"`
[INFO] running `"docker" "rm" "-f" "086cb0912e3022710016d18fdfd6508eacf6a7fb2a51cde82ef1a89fcad3bb3f"`
[INFO] [stdout] 086cb0912e3022710016d18fdfd6508eacf6a7fb2a51cde82ef1a89fcad3bb3f