[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 try#353a0a223066e9f46a1d935f2271a26c3c5002bb for pr-75180
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fletaron%2Ftacron" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/letaron/tacron on toolchain 353a0a223066e9f46a1d935f2271a26c3c5002bb
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "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-0/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" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1afcaacfa9b9199c52de83b688b3b1d84ec88304cc4dc9f8443aa5eca26bc858
[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" "1afcaacfa9b9199c52de83b688b3b1d84ec88304cc4dc9f8443aa5eca26bc858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1afcaacfa9b9199c52de83b688b3b1d84ec88304cc4dc9f8443aa5eca26bc858", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1afcaacfa9b9199c52de83b688b3b1d84ec88304cc4dc9f8443aa5eca26bc858", kill_on_drop: false }`
[INFO] [stdout] 1afcaacfa9b9199c52de83b688b3b1d84ec88304cc4dc9f8443aa5eca26bc858
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+353a0a223066e9f46a1d935f2271a26c3c5002bb" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9d7469671aaebc5a0ae432868cd02a859a778841aa8109659d9528333280351d
[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" "9d7469671aaebc5a0ae432868cd02a859a778841aa8109659d9528333280351d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.49
[INFO] [stderr]     Checking linked-hash-map v0.5.1
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex v1.1.2
[INFO] [stderr]     Checking yaml-rust v0.4.3
[INFO] [stderr]     Checking time v0.1.42
[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 7.23s
[INFO] running `Command { std: "docker" "inspect" "9d7469671aaebc5a0ae432868cd02a859a778841aa8109659d9528333280351d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d7469671aaebc5a0ae432868cd02a859a778841aa8109659d9528333280351d", kill_on_drop: false }`
[INFO] [stdout] 9d7469671aaebc5a0ae432868cd02a859a778841aa8109659d9528333280351d