[INFO] updating cached repository PolySync/howser
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PolySync/howser
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PolySync/howser" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PolySync/howser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PolySync/howser'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PolySync/howser" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PolySync/howser"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PolySync/howser'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d8e1d2ebb6a1534b4104d614108f6a75c3966faa
[INFO] sha for GitHub repo PolySync/howser: d8e1d2ebb6a1534b4104d614108f6a75c3966faa
[INFO] validating manifest of PolySync/howser on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PolySync/howser on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PolySync/howser
[INFO] finished frobbing PolySync/howser
[INFO] frobbed toml for PolySync/howser written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/PolySync/howser/Cargo.toml
[INFO] started frobbing PolySync/howser
[INFO] finished frobbing PolySync/howser
[INFO] frobbed toml for PolySync/howser written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PolySync/howser/Cargo.toml
[INFO] crate PolySync/howser already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking PolySync/howser against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-1/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/PolySync/howser:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 98989b8094ba37e1b770f7b24765c9242665bb528cea7f72829405af6556d9d2
[INFO] running `"docker" "start" "-a" "98989b8094ba37e1b770f7b24765c9242665bb528cea7f72829405af6556d9d2"`
[INFO] [stderr]     Checking environment v0.1.1
[INFO] [stderr]     Checking log v0.4.2
[INFO] [stderr]    Compiling doogie v1.0.0 (https://github.com/PolySync/doogie?tag=1.0.0#77015a45)
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking num-bigint v0.1.44
[INFO] [stderr]     Checking toml v0.4.6
[INFO] [stderr]     Checking proptest v0.3.4
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking env_logger v0.5.10
[INFO] [stderr]     Checking assert_cli v0.6.1
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking howser v0.2.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/helpers/test/strategies/content.rs:89:5
[INFO] [stderr]     |
[INFO] [stderr] 89  | /     /// Returns a content prompt optionally followed by some literal content.
[INFO] [stderr] 90  | |     ///
[INFO] [stderr] 91  | |     /// Used to compose valid prompt sequences.
[INFO] [stderr]     | |_______________________________________________^
[INFO] [stderr] 92  | /     prop_compose!{
[INFO] [stderr] 93  | |         fn prompt_segment()
[INFO] [stderr] 94  | |             (
[INFO] [stderr] 95  | |                 literal in prop::option::of(literal_prompt(1..10)),
[INFO] [stderr] ...   |
[INFO] [stderr] 105 | |         }
[INFO] [stderr] 106 | |     }
[INFO] [stderr]     | |_____- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:24:34
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub type ValidationProblem = Box<Reportable>;
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Reportable`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:53:32
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/validator.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Error(Box<Reportable>),
[INFO] [stderr]    |               ^^^^^^^^^^ help: use `dyn`: `dyn Reportable`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/document.rs:507:50
[INFO] [stderr]     |
[INFO] [stderr] 507 |     if let Some(location) = pattern.find(content.trim_left()) {
[INFO] [stderr]     |                                                  ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:24:34
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub type ValidationProblem = Box<Reportable>;
[INFO] [stderr]    |                                  ^^^^^^^^^^ help: use `dyn`: `dyn Reportable`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/errors.rs:53:32
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/validator.rs:43:15
[INFO] [stderr]    |
[INFO] [stderr] 43 |     Error(Box<Reportable>),
[INFO] [stderr]    |               ^^^^^^^^^^ help: use `dyn`: `dyn Reportable`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_left': superseded by `trim_start`
[INFO] [stderr]    --> src/document.rs:507:50
[INFO] [stderr]     |
[INFO] [stderr] 507 |     if let Some(location) = pattern.find(content.trim_left()) {
[INFO] [stderr]     |                                                  ^^^^^^^^^ help: replace the use of the deprecated item: `trim_start`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `splice` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(splice)]
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/bin/main.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut inner_err = e.cause();
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/bin/main.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |             inner_err = error.cause();
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/fixtures/mod.rs:81:23
[INFO] [stderr]    |
[INFO] [stderr] 81 |     prescription: Box<Document>,
[INFO] [stderr]    |                       ^^^^^^^^ help: use `dyn`: `dyn Document`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/fixtures/mod.rs:82:19
[INFO] [stderr]    |
[INFO] [stderr] 82 |     document: Box<Document>,
[INFO] [stderr]    |                   ^^^^^^^^ help: use `dyn`: `dyn Document`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/bin/main.rs:30:31
[INFO] [stderr]    |
[INFO] [stderr] 30 |         let mut inner_err = e.cause();
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/bin/main.rs:33:31
[INFO] [stderr]    |
[INFO] [stderr] 33 |             inner_err = error.cause();
[INFO] [stderr]    |                               ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `splice` has been stable since 1.27.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/lib.rs:6:12
[INFO] [stderr]   |
[INFO] [stderr] 6 | #![feature(splice)]
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.87s
[INFO] running `"docker" "inspect" "98989b8094ba37e1b770f7b24765c9242665bb528cea7f72829405af6556d9d2"`
[INFO] running `"docker" "rm" "-f" "98989b8094ba37e1b770f7b24765c9242665bb528cea7f72829405af6556d9d2"`
[INFO] [stdout] 98989b8094ba37e1b770f7b24765c9242665bb528cea7f72829405af6556d9d2