[INFO] cloning repository https://github.com/letaron/tacron
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/letaron/tacron" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletaron%2Ftacron", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletaron%2Ftacron'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 80c7a770b45d2f7d5d177182307f193b17a16c6f
[INFO] checking letaron/tacron against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletaron%2Ftacron" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/letaron/tacron on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/letaron/tacron
[INFO] finished tweaking git repo https://github.com/letaron/tacron
[INFO] tweaked toml for git repo https://github.com/letaron/tacron written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/letaron/tacron already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 31adb351af81702b16da3035acaf75e75eb092a726fcc75fe35b6e12a051e850
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "31adb351af81702b16da3035acaf75e75eb092a726fcc75fe35b6e12a051e850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "31adb351af81702b16da3035acaf75e75eb092a726fcc75fe35b6e12a051e850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31adb351af81702b16da3035acaf75e75eb092a726fcc75fe35b6e12a051e850", kill_on_drop: false }`
[INFO] [stdout] 31adb351af81702b16da3035acaf75e75eb092a726fcc75fe35b6e12a051e850
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a76a561975df9da2e41da71a27aa3ddd40541d82a0e7e684c8464c4cd023ec51
[INFO] running `Command { std: "docker" "start" "-a" "a76a561975df9da2e41da71a27aa3ddd40541d82a0e7e684c8464c4cd023ec51", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking signal-hook v0.1.8
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking tacron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/crontab_reader.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |     readers: &mut Vec<Box<Reader + Sync + Send>>, users: &Vec<String>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/file_reader.rs:81:27
[INFO] [stdout]    |
[INFO] [stdout] 81 |     readers: &mut Vec<Box<Reader + Sync + Send>>, crontabs: &Vec<String>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | ) -> Vec<Box<Reader + Sync + Send>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |         fn(&mut Vec<Box<(Reader + Send + Sync)>>, &Vec<String>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:49:43
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn retrieve_tacrons(readers: &Vec<Box<Reader + Sync + Send>>) -> Vec<TaCron> {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let readers: Vec<Box<Reader + Sync + Send>>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:40
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn add_sighup_handler(readers: Vec<Box<Reader + Sync + Send>>, tacrons: Arc<RwLock<Vec<TaCron>>>) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/crontab_reader.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |     readers: &mut Vec<Box<Reader + Sync + Send>>, users: &Vec<String>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/file_reader.rs:81:27
[INFO] [stdout]    |
[INFO] [stdout] 81 |     readers: &mut Vec<Box<Reader + Sync + Send>>, crontabs: &Vec<String>,
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/reader/file_reader.rs:125:34
[INFO] [stdout]     |
[INFO] [stdout] 125 |         let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:30:14
[INFO] [stdout]    |
[INFO] [stdout] 30 | ) -> Vec<Box<Reader + Sync + Send>> {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:31:30
[INFO] [stdout]    |
[INFO] [stdout] 31 |     let mut readers: Vec<Box<Reader + Sync + Send>> = Vec::new();
[INFO] [stdout]    |                              ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:35:26
[INFO] [stdout]    |
[INFO] [stdout] 35 |         fn(&mut Vec<Box<(Reader + Send + Sync)>>, &Vec<String>),
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/reader/mod.rs:49:43
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn retrieve_tacrons(readers: &Vec<Box<Reader + Sync + Send>>) -> Vec<TaCron> {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:51:26
[INFO] [stdout]    |
[INFO] [stdout] 51 |     let readers: Vec<Box<Reader + Sync + Send>>;
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:66:40
[INFO] [stdout]    |
[INFO] [stdout] 66 | fn add_sighup_handler(readers: Vec<Box<Reader + Sync + Send>>, tacrons: Arc<RwLock<Vec<TaCron>>>) {
[INFO] [stdout]    |                                        ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Reader + Sync + Send`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::is_err` that must be used
[INFO] [stdout]   --> src/time_units/days_of_week.rs:63:9
[INFO] [stdout]    |
[INFO] [stdout] 63 |         DaysOfWeek::value_from_name("foo").is_err();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::result::Result::<T, E>::is_err` that must be used
[INFO] [stdout]   --> src/time_units/months.rs:73:9
[INFO] [stdout]    |
[INFO] [stdout] 73 |         Months::value_from_name("foo").is_err();
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you intended to assert that this is err, consider `.unwrap_err()` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "a76a561975df9da2e41da71a27aa3ddd40541d82a0e7e684c8464c4cd023ec51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a76a561975df9da2e41da71a27aa3ddd40541d82a0e7e684c8464c4cd023ec51", kill_on_drop: false }`
[INFO] [stdout] a76a561975df9da2e41da71a27aa3ddd40541d82a0e7e684c8464c4cd023ec51