[INFO] fetching crate screwsat 0.1.0...
[INFO] extracting crate screwsat 0.1.0 into work/ex/beta-1.37-6/sources/1.36.0/reg/screwsat/0.1.0
[INFO] extracting crate screwsat 0.1.0 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/screwsat/0.1.0
[INFO] validating manifest of screwsat-0.1.0 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 screwsat-0.1.0 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 screwsat-0.1.0
[INFO] finished frobbing screwsat-0.1.0
[INFO] frobbed toml for screwsat-0.1.0 written to work/ex/beta-1.37-6/sources/1.36.0/reg/screwsat/0.1.0/Cargo.toml
[INFO] started frobbing screwsat-0.1.0
[INFO] finished frobbing screwsat-0.1.0
[INFO] frobbed toml for screwsat-0.1.0 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/screwsat/0.1.0/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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[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 screwsat-0.1.0 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-5/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/screwsat/0.1.0:/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] 5ba559d07e0d306e9193416103e390a8dfc994497e19470b28207997e350d499
[INFO] running `"docker" "start" "-a" "5ba559d07e0d306e9193416103e390a8dfc994497e19470b28207997e350d499"`
[INFO] [stderr]    Compiling screwsat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:92:66
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn parse(&mut self, filename: &String) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clause_count`
[INFO] [stderr]   --> src/main.rs:69:42
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn init(&mut self, var_count: usize, clause_count: usize) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_clause_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UNSATISFIABLE`
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     UNSATISFIABLE,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SATISFIABLE`
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     SATISFIABLE,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `"docker" "inspect" "5ba559d07e0d306e9193416103e390a8dfc994497e19470b28207997e350d499"`
[INFO] running `"docker" "rm" "-f" "5ba559d07e0d306e9193416103e390a8dfc994497e19470b28207997e350d499"`
[INFO] [stdout] 5ba559d07e0d306e9193416103e390a8dfc994497e19470b28207997e350d499
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/screwsat/0.1.0:/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] 1e0046bf286c4489581bc35d1e6e39cc1329374fcfa819e3c6c3c60efc48ba9b
[INFO] running `"docker" "start" "-a" "1e0046bf286c4489581bc35d1e6e39cc1329374fcfa819e3c6c3c60efc48ba9b"`
[INFO] [stderr]    Compiling screwsat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:92:66
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn parse(&mut self, filename: &String) -> Result<(), Box<std::error::Error>> {
[INFO] [stderr]    |                                                                  ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `clause_count`
[INFO] [stderr]   --> src/main.rs:69:42
[INFO] [stderr]    |
[INFO] [stderr] 69 |     fn init(&mut self, var_count: usize, clause_count: usize) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_clause_count`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UNSATISFIABLE`
[INFO] [stderr]   --> src/main.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     UNSATISFIABLE,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `SATISFIABLE`
[INFO] [stderr]   --> src/main.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     SATISFIABLE,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `"docker" "inspect" "1e0046bf286c4489581bc35d1e6e39cc1329374fcfa819e3c6c3c60efc48ba9b"`
[INFO] running `"docker" "rm" "-f" "1e0046bf286c4489581bc35d1e6e39cc1329374fcfa819e3c6c3c60efc48ba9b"`
[INFO] [stdout] 1e0046bf286c4489581bc35d1e6e39cc1329374fcfa819e3c6c3c60efc48ba9b
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-5/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/screwsat/0.1.0:/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] 0d5f2d3c82b898aeb95c5eb8b6d606a0b8ea2c35183e662bcf8f0405dc911024
[INFO] running `"docker" "start" "-a" "0d5f2d3c82b898aeb95c5eb8b6d606a0b8ea2c35183e662bcf8f0405dc911024"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/screwsat-220a46b7ba083f2f
[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] running `"docker" "inspect" "0d5f2d3c82b898aeb95c5eb8b6d606a0b8ea2c35183e662bcf8f0405dc911024"`
[INFO] running `"docker" "rm" "-f" "0d5f2d3c82b898aeb95c5eb8b6d606a0b8ea2c35183e662bcf8f0405dc911024"`
[INFO] [stdout] 0d5f2d3c82b898aeb95c5eb8b6d606a0b8ea2c35183e662bcf8f0405dc911024