[INFO] updating cached repository letaron/tacron
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/letaron/tacron
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/letaron/tacron" "work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/letaron/tacron"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/letaron/tacron'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/letaron/tacron" "work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/letaron/tacron"`
[INFO] [stderr] Cloning into 'work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/letaron/tacron'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 527dbf5554bd6347eea9ed2e8c9b9bfc09c53317
[INFO] sha for GitHub repo letaron/tacron: 527dbf5554bd6347eea9ed2e8c9b9bfc09c53317
[INFO] validating manifest of letaron/tacron on toolchain master#452087b4bf18cece2d52d7cd8c9147195e5404bf
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of letaron/tacron on toolchain try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing letaron/tacron
[INFO] finished frobbing letaron/tacron
[INFO] frobbed toml for letaron/tacron written to work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/letaron/tacron/Cargo.toml
[INFO] started frobbing letaron/tacron
[INFO] finished frobbing letaron/tacron
[INFO] frobbed toml for letaron/tacron written to work/ex/pr-63247/sources/try#757dacae0a9f1b46b3ab58a1f1232332e8fc7dab/gh/letaron/tacron/Cargo.toml
[INFO] crate letaron/tacron already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+757dacae0a9f1b46b3ab58a1f1232332e8fc7dab-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking letaron/tacron against master#452087b4bf18cece2d52d7cd8c9147195e5404bf for pr-63247
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63247/worker-0/master#452087b4bf18cece2d52d7cd8c9147195e5404bf:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63247/sources/master#452087b4bf18cece2d52d7cd8c9147195e5404bf/gh/letaron/tacron:/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" "+452087b4bf18cece2d52d7cd8c9147195e5404bf-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 342e8c81db2a817c08b2ec7eb2c7636bace9013a066d530a138480f66b942259
[INFO] running `"docker" "start" "-a" "342e8c81db2a817c08b2ec7eb2c7636bace9013a066d530a138480f66b942259"`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking rust-ini v0.13.0
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking nom v4.2.2
[INFO] [stderr]     Checking serde-hjson v0.8.2
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]     Checking config v0.9.2
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tacron v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/crontab_reader.rs:75:51
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn add_crontabs_readers(readers: &mut Vec<Box<Reader + Sync + Send>>, crontabs: &Vec<String>) {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[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/reader/crontab_reader.rs:118:34
[INFO] [stderr]     |
[INFO] [stderr] 118 |         let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/mod.rs:26:72
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn get_readers(settings: &HashMap<String, Vec<String>>) -> Vec<Box<Reader + Sync + Send>> {
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/mod.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/mod.rs:40:38
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn get_tacrons(readers: &Vec<Box<Reader + Sync + Send>>) -> Vec<TaCron> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:53:26
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let readers: Vec<Box<Reader + Sync + Send>>;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn add_sighup_handler(readers: Vec<Box<Reader + Sync + Send>>, tacrons: Arc<RwLock<Vec<TaCron>>>) {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/crontab_reader.rs:75:51
[INFO] [stderr]    |
[INFO] [stderr] 75 | pub fn add_crontabs_readers(readers: &mut Vec<Box<Reader + Sync + Send>>, crontabs: &Vec<String>) {
[INFO] [stderr]    |                                                   ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[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/reader/mod.rs:26:72
[INFO] [stderr]    |
[INFO] [stderr] 26 | pub fn get_readers(settings: &HashMap<String, Vec<String>>) -> Vec<Box<Reader + Sync + Send>> {
[INFO] [stderr]    |                                                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/mod.rs:27:30
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader/mod.rs:40:38
[INFO] [stderr]    |
[INFO] [stderr] 40 | pub fn get_tacrons(readers: &Vec<Box<Reader + Sync + Send>>) -> Vec<TaCron> {
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:53:26
[INFO] [stderr]    |
[INFO] [stderr] 53 |     let readers: Vec<Box<Reader + Sync + Send>>;
[INFO] [stderr]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:68:40
[INFO] [stderr]    |
[INFO] [stderr] 68 | fn add_sighup_handler(readers: Vec<Box<Reader + Sync + Send>>, tacrons: Arc<RwLock<Vec<TaCron>>>) {
[INFO] [stderr]    |                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_err` that must be used
[INFO] [stderr]   --> src/time_units/days_of_week.rs:63:9
[INFO] [stderr]    |
[INFO] [stderr] 63 |         DaysOfWeek::value_from_name("foo").is_err();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `std::result::Result::<T, E>::is_err` that must be used
[INFO] [stderr]   --> src/time_units/months.rs:73:9
[INFO] [stderr]    |
[INFO] [stderr] 73 |         Months::value_from_name("foo").is_err();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.50s
[INFO] running `"docker" "inspect" "342e8c81db2a817c08b2ec7eb2c7636bace9013a066d530a138480f66b942259"`
[INFO] running `"docker" "rm" "-f" "342e8c81db2a817c08b2ec7eb2c7636bace9013a066d530a138480f66b942259"`
[INFO] [stdout] 342e8c81db2a817c08b2ec7eb2c7636bace9013a066d530a138480f66b942259