[INFO] fetching crate panic-control 0.1.4...
[INFO] checking panic-control-0.1.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate panic-control 0.1.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate panic-control 0.1.4 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-control 0.1.4
[INFO] finished tweaking crates.io crate panic-control 0.1.4
[INFO] tweaked toml for crates.io crate panic-control 0.1.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e7a12626df7c5278c441d480f24fb1b0a6c2ba67838a63bcc7c1a32919e6ac15
[INFO] running `Command { std: "docker" "start" "-a" "e7a12626df7c5278c441d480f24fb1b0a6c2ba67838a63bcc7c1a32919e6ac15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e7a12626df7c5278c441d480f24fb1b0a6c2ba67838a63bcc7c1a32919e6ac15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7a12626df7c5278c441d480f24fb1b0a6c2ba67838a63bcc7c1a32919e6ac15", kill_on_drop: false }`
[INFO] [stdout] e7a12626df7c5278c441d480f24fb1b0a6c2ba67838a63bcc7c1a32919e6ac15
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 299938511e0722f4bad9334949e6f26c1029feeb859af151a60752e3df9b8b4a
[INFO] running `Command { std: "docker" "start" "-a" "299938511e0722f4bad9334949e6f26c1029feeb859af151a60752e3df9b8b4a", kill_on_drop: false }`
[INFO] [stderr]     Checking panic-control v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:753:30
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:520:29
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &Any) -> Option<&str> {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &dyn Any) -> Option<&str> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:530:33
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<Any + Send>) -> ! {
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<dyn Any + Send>) -> ! {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:753:30
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:873:27
[INFO] [stdout]     |
[INFO] [stdout] 873 |     use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:880:30
[INFO] [stdout]     |
[INFO] [stdout] 880 |         static GUARD: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 880 |         static GUARD: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:520:29
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &Any) -> Option<&str> {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &dyn Any) -> Option<&str> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:530:33
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<Any + Send>) -> ! {
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<dyn Any + Send>) -> ! {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:80:27
[INFO] [stdout]    |
[INFO] [stdout] 80 |         struct Unexpected(&'static str);
[INFO] [stdout]    |                ---------- ^^^^^^^^^^^^
[INFO] [stdout]    |                |
[INFO] [stdout]    |                field in this struct
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Unexpected` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 80 |         struct Unexpected(());
[INFO] [stdout]    |                           ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |             panic!(TEST_STR);
[INFO] [stdout]    |                    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 28 |             panic!("{}", TEST_STR);
[INFO] [stdout]    |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:38:20
[INFO] [stdout]    |
[INFO] [stdout] 38 |             panic!(String::from(TEST_STR));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 38 |             panic!("{}", String::from(TEST_STR));
[INFO] [stdout]    |                    +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:48:20
[INFO] [stdout]    |
[INFO] [stdout] 48 |             panic!(42);
[INFO] [stdout]    |                    ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 48 |             panic!("{}", 42);
[INFO] [stdout]    |                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 48 |             std::panic::panic_any(42);
[INFO] [stdout]    |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:84:24
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 panic!(TEST_STR);
[INFO] [stdout]    |                        ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 84 |                 panic!("{}", TEST_STR);
[INFO] [stdout]    |                        +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_result_ext.rs:88:20
[INFO] [stdout]    |
[INFO] [stdout] 88 |             panic!(Unexpected("should have panicked above"));
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `Unexpected`
[INFO] [stdout]    |
[INFO] [stdout] 88 |             panic!("{:?}", Unexpected("should have panicked above"));
[INFO] [stdout]    |                    +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 88 |             std::panic::panic_any(Unexpected("should have panicked above"));
[INFO] [stdout]    |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:106:24
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 panic!(String::from(TEST_STR));
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 106 |                 panic!("{}", String::from(TEST_STR));
[INFO] [stdout]     |                        +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:131:24
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 panic!(&[0]);
[INFO] [stdout]     |                        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `&[i32; 1]`
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 panic!("{:?}", &[0]);
[INFO] [stdout]     |                        +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 131 |                 std::panic::panic_any(&[0]);
[INFO] [stdout]     |                 ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/panic_control.rs:912:20
[INFO] [stdout]     |
[INFO] [stdout] 912 |             panic!(Expected(42));
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `Expected`
[INFO] [stdout]     |
[INFO] [stdout] 912 |             panic!("{:?}", Expected(42));
[INFO] [stdout]     |                    +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 912 |             std::panic::panic_any(Expected(42));
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/panic_control.rs:924:20
[INFO] [stdout]     |
[INFO] [stdout] 924 |             panic!(42);
[INFO] [stdout]     |                    ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 924 |             panic!("{}", 42);
[INFO] [stdout]     |                    +++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 924 |             std::panic::panic_any(42);
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/panic_control.rs:985:20
[INFO] [stdout]     |
[INFO] [stdout] 985 |             panic!(Expected(42));
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `Expected`
[INFO] [stdout]     |
[INFO] [stdout] 985 |             panic!("{:?}", Expected(42));
[INFO] [stdout]     |                    +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 985 |             std::panic::panic_any(Expected(42));
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/panic_control.rs:998:20
[INFO] [stdout]     |
[INFO] [stdout] 998 |             panic!(Expected(42));
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `Expected`
[INFO] [stdout]     |
[INFO] [stdout] 998 |             panic!("{:?}", Expected(42));
[INFO] [stdout]     |                    +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]     |
[INFO] [stdout] 998 |             std::panic::panic_any(Expected(42));
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_hook.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |         panic!(TEST_STR);
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]    = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 33 |         panic!("{}", TEST_STR);
[INFO] [stdout]    |                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_hook.rs:41:16
[INFO] [stdout]    |
[INFO] [stdout] 41 |         panic!(());
[INFO] [stdout]    |                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `()`
[INFO] [stdout]    |
[INFO] [stdout] 41 |         panic!("{:?}", ());
[INFO] [stdout]    |                +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 41 |         std::panic::panic_any(());
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_hook.rs:49:16
[INFO] [stdout]    |
[INFO] [stdout] 49 |         panic!(TEST_STR);
[INFO] [stdout]    |                ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]    |
[INFO] [stdout] 49 |         panic!("{}", TEST_STR);
[INFO] [stdout]    |                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> tests/test_thread_hook.rs:56:16
[INFO] [stdout]    |
[INFO] [stdout] 56 |         panic!(());
[INFO] [stdout]    |                ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{:?}" format string to use the `Debug` implementation of `()`
[INFO] [stdout]    |
[INFO] [stdout] 56 |         panic!("{:?}", ());
[INFO] [stdout]    |                +++++++
[INFO] [stdout] help: or use std::panic::panic_any instead
[INFO] [stdout]    |
[INFO] [stdout] 56 |         std::panic::panic_any(());
[INFO] [stdout]    |         ~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "299938511e0722f4bad9334949e6f26c1029feeb859af151a60752e3df9b8b4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "299938511e0722f4bad9334949e6f26c1029feeb859af151a60752e3df9b8b4a", kill_on_drop: false }`
[INFO] [stdout] 299938511e0722f4bad9334949e6f26c1029feeb859af151a60752e3df9b8b4a
[INFO] checking panic-control-0.1.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate panic-control 0.1.4 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate panic-control 0.1.4 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate panic-control 0.1.4
[INFO] finished tweaking crates.io crate panic-control 0.1.4
[INFO] tweaked toml for crates.io crate panic-control 0.1.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6008d4dac6abc582e23a39da32a544a473c88743a29e1e0ad6a373d2f5cd9d1b
[INFO] running `Command { std: "docker" "start" "-a" "6008d4dac6abc582e23a39da32a544a473c88743a29e1e0ad6a373d2f5cd9d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6008d4dac6abc582e23a39da32a544a473c88743a29e1e0ad6a373d2f5cd9d1b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6008d4dac6abc582e23a39da32a544a473c88743a29e1e0ad6a373d2f5cd9d1b", kill_on_drop: false }`
[INFO] [stdout] 6008d4dac6abc582e23a39da32a544a473c88743a29e1e0ad6a373d2f5cd9d1b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ad990006902fac42cf79037d09cba6d480182a03484282a66f98f4398c63f2a9
[INFO] running `Command { std: "docker" "start" "-a" "ad990006902fac42cf79037d09cba6d480182a03484282a66f98f4398c63f2a9", kill_on_drop: false }`
[INFO] [stderr]     Checking panic-control v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:753:30
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:520:29
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &Any) -> Option<&str> {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &dyn Any) -> Option<&str> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:530:33
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<Any + Send>) -> ! {
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<dyn Any + Send>) -> ! {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:123:23
[INFO] [stdout]     |
[INFO] [stdout] 123 | use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                       ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:753:30
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 753 |     static HOOK_ONCE: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:873:27
[INFO] [stdout]     |
[INFO] [stdout] 873 |     use std::sync::{Once, ONCE_INIT};
[INFO] [stdout]     |                           ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/panic_control.rs:880:30
[INFO] [stdout]     |
[INFO] [stdout] 880 |         static GUARD: Once = ONCE_INIT;
[INFO] [stdout]     |                              ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 880 |         static GUARD: Once = Once::new();
[INFO] [stdout]     |                              ~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:520:29
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &Any) -> Option<&str> {
[INFO] [stdout]     |                             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 520 | fn str_from_any(something: &dyn Any) -> Option<&str> {
[INFO] [stdout]     |                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/panic_control.rs:530:33
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<Any + Send>) -> ! {
[INFO] [stdout]     |                                 ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 530 | fn propagate_panic(box_any: Box<dyn Any + Send>) -> ! {
[INFO] [stdout]     |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `CheckedJoinHandle<T, Expected>`
[INFO] [stdout]    --> src/panic_control.rs:911:13
[INFO] [stdout]     |
[INFO] [stdout] 911 |         let h = ctx.spawn(|| {
[INFO] [stdout]     |             ^       ----- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `Context::<P>::spawn`
[INFO] [stdout]    --> src/panic_control.rs:384:18
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn spawn<T, F>(self, f: F) -> CheckedJoinHandle<T, P>
[INFO] [stdout]     |            ----- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 384 |               T: Send + 'static
[INFO] [stdout]     |                  ^^^^ required by this bound in `Context::<P>::spawn`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 911 |         let h: CheckedJoinHandle<T, Expected> = ctx.spawn(|| {
[INFO] [stdout]     |              ++++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `CheckedJoinHandle<T, u32>`
[INFO] [stdout]    --> src/panic_control.rs:923:13
[INFO] [stdout]     |
[INFO] [stdout] 923 |         let h = Context::<u32>::new().spawn_quiet(|| {
[INFO] [stdout]     |             ^                         ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `Context::<P>::spawn_quiet`
[INFO] [stdout]    --> src/panic_control.rs:434:18
[INFO] [stdout]     |
[INFO] [stdout] 431 |     pub fn spawn_quiet<T, F>(self, f: F) -> CheckedJoinHandle<T, P>
[INFO] [stdout]     |            ----------- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 434 |               T: Send + 'static
[INFO] [stdout]     |                  ^^^^ required by this bound in `Context::<P>::spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 923 |         let h: CheckedJoinHandle<T, u32> = Context::<u32>::new().spawn_quiet(|| {
[INFO] [stdout]     |              +++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> src/panic_control.rs:987:13
[INFO] [stdout]     |
[INFO] [stdout] 984 |         let h = ctx.spawn(|| {
[INFO] [stdout]     |                     ----- type must be known at this point
[INFO] [stdout] ...
[INFO] [stdout] 987 |         let h = h.into_thread_join_handle();
[INFO] [stdout]     |             ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `Context::<P>::spawn`
[INFO] [stdout]    --> src/panic_control.rs:384:18
[INFO] [stdout]     |
[INFO] [stdout] 381 |     pub fn spawn<T, F>(self, f: F) -> CheckedJoinHandle<T, P>
[INFO] [stdout]     |            ----- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 384 |               T: Send + 'static
[INFO] [stdout]     |                  ^^^^ required by this bound in `Context::<P>::spawn`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 987 |         let h: JoinHandle<T> = h.into_thread_join_handle();
[INFO] [stdout]     |              +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:27:13
[INFO] [stdout]     |
[INFO] [stdout] 27  |           let h = spawn_quiet(|| {
[INFO] [stdout]     |  _____________^___-
[INFO] [stdout] 28  | |             panic!(TEST_STR);
[INFO] [stdout] 29  | |         });
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:859:14
[INFO] [stdout]     |
[INFO] [stdout] 856 | pub fn spawn_quiet<T, F>(f: F) -> thread::JoinHandle<T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] ...
[INFO] [stdout] 859 |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 27  |         let h: JoinHandle<T> = spawn_quiet(|| {
[INFO] [stdout]     |              +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:37:13
[INFO] [stdout]     |
[INFO] [stdout] 37  |           let h = spawn_quiet(|| {
[INFO] [stdout]     |  _____________^___-
[INFO] [stdout] 38  | |             panic!(String::from(TEST_STR));
[INFO] [stdout] 39  | |         });
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:859:14
[INFO] [stdout]     |
[INFO] [stdout] 856 | pub fn spawn_quiet<T, F>(f: F) -> thread::JoinHandle<T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] ...
[INFO] [stdout] 859 |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 37  |         let h: JoinHandle<T> = spawn_quiet(|| {
[INFO] [stdout]     |              +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:47:13
[INFO] [stdout]     |
[INFO] [stdout] 47  |           let h = spawn_quiet(|| {
[INFO] [stdout]     |  _____________^___-
[INFO] [stdout] 48  | |             panic!(42);
[INFO] [stdout] 49  | |         });
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:859:14
[INFO] [stdout]     |
[INFO] [stdout] 856 | pub fn spawn_quiet<T, F>(f: F) -> thread::JoinHandle<T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] ...
[INFO] [stdout] 859 |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 47  |         let h: JoinHandle<T> = spawn_quiet(|| {
[INFO] [stdout]     |              +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `CheckedJoinHandle<T, String>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:82:13
[INFO] [stdout]     |
[INFO] [stdout] 82  |         let h = Context::<String>::new().spawn_quiet(|| {
[INFO] [stdout]     |             ^                            ----------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::Context::<P>::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:434:18
[INFO] [stdout]     |
[INFO] [stdout] 431 |     pub fn spawn_quiet<T, F>(self, f: F) -> CheckedJoinHandle<T, P>
[INFO] [stdout]     |            ----------- required by a bound in this associated function
[INFO] [stdout] ...
[INFO] [stdout] 434 |               T: Send + 'static
[INFO] [stdout]     |                  ^^^^ required by this bound in `Context::<P>::spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 82  |         let h: CheckedJoinHandle<T, String> = Context::<String>::new().spawn_quiet(|| {
[INFO] [stdout]     |              ++++++++++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:105:17
[INFO] [stdout]     |
[INFO] [stdout] 105 |               let h = spawn_quiet(|| {
[INFO] [stdout]     |  _________________^___-
[INFO] [stdout] 106 | |                 panic!(String::from(TEST_STR));
[INFO] [stdout] 107 | |             });
[INFO] [stdout]     | |______________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:859:14
[INFO] [stdout]     |
[INFO] [stdout] 856 | pub fn spawn_quiet<T, F>(f: F) -> thread::JoinHandle<T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] ...
[INFO] [stdout] 859 |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 105 |             let h: JoinHandle<T> = spawn_quiet(|| {
[INFO] [stdout]     |                  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<T>`
[INFO] [stdout]    --> tests/test_thread_result_ext.rs:130:17
[INFO] [stdout]     |
[INFO] [stdout] 130 |               let h = spawn_quiet(|| {
[INFO] [stdout]     |  _________________^___-
[INFO] [stdout] 131 | |                 panic!(&[0]);
[INFO] [stdout] 132 | |             });
[INFO] [stdout]     | |______________- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `panic_control::spawn_quiet`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/panic_control.rs:859:14
[INFO] [stdout]     |
[INFO] [stdout] 856 | pub fn spawn_quiet<T, F>(f: F) -> thread::JoinHandle<T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] ...
[INFO] [stdout] 859 |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `spawn_quiet`
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 130 |             let h: JoinHandle<T> = spawn_quiet(|| {
[INFO] [stdout]     |                  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-control` (test "test_thread_result_ext") due to 7 previous errors
[INFO] [stdout] error: aborting due to 3 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-control` (lib test) due to 4 previous errors; 6 warnings emitted
[INFO] [stdout] error[E0283]: type annotations needed for `JoinHandle<_>`
[INFO] [stdout]   --> tests/test_thread_hook.rs:32:9
[INFO] [stdout]    |
[INFO] [stdout] 32 |       let h = thread::spawn(|| {
[INFO] [stdout]    |  _________^___-
[INFO] [stdout] 33 | |         panic!(TEST_STR);
[INFO] [stdout] 34 | |     });
[INFO] [stdout]    | |______- type must be known at this point
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: consider giving `h` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]    |
[INFO] [stdout] 32 |     let h: JoinHandle<_> = thread::spawn(|| {
[INFO] [stdout]    |          +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `panic-control` (test "test_thread_hook") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "ad990006902fac42cf79037d09cba6d480182a03484282a66f98f4398c63f2a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad990006902fac42cf79037d09cba6d480182a03484282a66f98f4398c63f2a9", kill_on_drop: false }`
[INFO] [stdout] ad990006902fac42cf79037d09cba6d480182a03484282a66f98f4398c63f2a9