[INFO] crate smetamath 3.0.0 is already in cache
[INFO] extracting crate smetamath 3.0.0 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/smetamath/3.0.0
[INFO] extracting crate smetamath 3.0.0 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/smetamath/3.0.0
[INFO] validating manifest of smetamath-3.0.0 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of smetamath-3.0.0 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing smetamath-3.0.0
[INFO] finished frobbing smetamath-3.0.0
[INFO] frobbed toml for smetamath-3.0.0 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/smetamath/3.0.0/Cargo.toml
[INFO] started frobbing smetamath-3.0.0
[INFO] finished frobbing smetamath-3.0.0
[INFO] frobbed toml for smetamath-3.0.0 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/smetamath/3.0.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing smetamath-3.0.0 against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/smetamath/3.0.0:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] e4ccdd4ecf6254305e75f1020bd675d04fc777aab1508695a6fbab9f4cf611ee
[INFO] running `"docker" "start" "-a" "e4ccdd4ecf6254305e75f1020bd675d04fc777aab1508695a6fbab9f4cf611ee"`
[INFO] [stderr]    Compiling libc v0.2.48
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling filetime v0.1.15
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling smetamath v3.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[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/database.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:268:25
[INFO] [stderr]     |
[INFO] [stderr] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:291:25
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 1m 24s
[INFO] running `"docker" "inspect" "e4ccdd4ecf6254305e75f1020bd675d04fc777aab1508695a6fbab9f4cf611ee"`
[INFO] running `"docker" "rm" "-f" "e4ccdd4ecf6254305e75f1020bd675d04fc777aab1508695a6fbab9f4cf611ee"`
[INFO] [stdout] e4ccdd4ecf6254305e75f1020bd675d04fc777aab1508695a6fbab9f4cf611ee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/smetamath/3.0.0:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] d054869191e1755bdefc30d05f0b4258c016e5a5fddeeef222b18c286dde0b40
[INFO] running `"docker" "start" "-a" "d054869191e1755bdefc30d05f0b4258c016e5a5fddeeef222b18c286dde0b40"`
[INFO] [stderr]    Compiling smetamath v3.0.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[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/database.rs:247:25
[INFO] [stderr]     |
[INFO] [stderr] 247 |                     let mut ns = Arc::make_mut(self.prev_nameset.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:268:25
[INFO] [stderr]     |
[INFO] [stderr] 268 |                     let mut ns = Arc::make_mut(self.prev_scopes.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/database.rs:291:25
[INFO] [stderr]     |
[INFO] [stderr] 291 |                     let mut ver = Arc::make_mut(self.prev_verify.as_mut().unwrap());
[INFO] [stderr]     |                         ----^^^
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 1.76s
[INFO] running `"docker" "inspect" "d054869191e1755bdefc30d05f0b4258c016e5a5fddeeef222b18c286dde0b40"`
[INFO] running `"docker" "rm" "-f" "d054869191e1755bdefc30d05f0b4258c016e5a5fddeeef222b18c286dde0b40"`
[INFO] [stdout] d054869191e1755bdefc30d05f0b4258c016e5a5fddeeef222b18c286dde0b40
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-1/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/smetamath/3.0.0:/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=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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] f35498b135c692af85f96409adef7173c2753aa2884d45445344a4259c3ab160
[INFO] running `"docker" "start" "-a" "f35498b135c692af85f96409adef7173c2753aa2884d45445344a4259c3ab160"`
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/smetamath-700c54630150d56a
[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" "f35498b135c692af85f96409adef7173c2753aa2884d45445344a4259c3ab160"`
[INFO] running `"docker" "rm" "-f" "f35498b135c692af85f96409adef7173c2753aa2884d45445344a4259c3ab160"`
[INFO] [stdout] f35498b135c692af85f96409adef7173c2753aa2884d45445344a4259c3ab160