[INFO] fetching crate hlua 0.4.1...
[INFO] checking hlua-0.4.1 against 1.55.0 for beta-1.56-3
[INFO] extracting crate hlua 0.4.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate hlua 0.4.1 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hlua 0.4.1
[INFO] finished tweaking crates.io crate hlua 0.4.1
[INFO] tweaked toml for crates.io crate hlua 0.4.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6c1714965654e7d9f6d7e2b7faf7b6d268e280f57e0d2a64208448b03464f22
[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" "c6c1714965654e7d9f6d7e2b7faf7b6d268e280f57e0d2a64208448b03464f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6c1714965654e7d9f6d7e2b7faf7b6d268e280f57e0d2a64208448b03464f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6c1714965654e7d9f6d7e2b7faf7b6d268e280f57e0d2a64208448b03464f22", kill_on_drop: false }`
[INFO] [stdout] c6c1714965654e7d9f6d7e2b7faf7b6d268e280f57e0d2a64208448b03464f22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b9f74aa3f219b0fb4f6274b96ef1c8b6b4bdac4f376a2e8819364b0c433e8f7
[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" "1b9f74aa3f219b0fb4f6274b96ef1c8b6b4bdac4f376a2e8819364b0c433e8f7", 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]    Compiling lua52-sys v0.1.2
[INFO] [stderr]     Checking hlua v0.4.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/any.rs:67:61
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let size = val.push_no_err(&mut lua as &mut AsMutLua<'lua>).forget_internal();
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn AsMutLua<'lua>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/any.rs:152:61
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 let size = val.push_no_err(&mut lua as &mut AsMutLua<'lua>).forget_internal();
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn AsMutLua<'lua>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:441:10
[INFO] [stdout]     |
[INFO] [stdout] 441 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:454:10
[INFO] [stdout]     |
[INFO] [stdout] 454 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:467:10
[INFO] [stdout]     |
[INFO] [stdout] 467 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:480:10
[INFO] [stdout]     |
[INFO] [stdout] 480 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:496:10
[INFO] [stdout]     |
[INFO] [stdout] 496 |         };
[INFO] [stdout]     |          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/functions_write.rs:560:23
[INFO] [stdout]     |
[INFO] [stdout] 560 |         struct Foo { };
[INFO] [stdout]     |                       ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lua_functions.rs:392:32
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lua_functions.rs:408:32
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/lua_functions.rs:461:84
[INFO] [stdout]     |
[INFO] [stdout] 461 |         let val: i32 = lua.get::<LuaFunction<_>, _>("foo").unwrap().call_with_args((3)).unwrap();
[INFO] [stdout]     |                                                                                    ^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lua_functions.rs:522:26
[INFO] [stdout]     |
[INFO] [stdout] 522 |         struct Reader { };
[INFO] [stdout]     |                          ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/lua_tables.rs:579:14
[INFO] [stdout]     |
[INFO] [stdout] 579 |             };
[INFO] [stdout]     |              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/rust_tables.rs:24:39
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for (elem, index) in iterator.zip((1..)) {
[INFO] [stdout]    |                                       ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:447:32
[INFO] [stdout]     |
[INFO] [stdout] 447 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:678:21
[INFO] [stdout]     |
[INFO] [stdout] 678 |         let mut f = try!(lua_functions::LuaFunction::load(self, code));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:706:21
[INFO] [stdout]     |
[INFO] [stdout] 706 |         let mut f = try!(lua_functions::LuaFunction::load_from_reader(self, code));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:230:24
[INFO] [stdout]     |
[INFO] [stdout] 230 |             res = mem::uninitialized();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/lua_functions.rs:99:30
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 buffer: mem::uninitialized(),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:150:52
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut size: libc::size_t = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:193:52
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut size: libc::size_t = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:257:47
[INFO] [stdout]     |
[INFO] [stdout] 257 |             let mut size: libc::size_t = mem::uninitialized();
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | integer_impl!(i8);
[INFO] [stdout]    | ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | integer_impl!(i16);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 | integer_impl!(i32);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 | unsigned_impl!(u8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | unsigned_impl!(u16);
[INFO] [stdout]    | -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 | unsigned_impl!(u32);
[INFO] [stdout]    | -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:107:49
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 | numeric_impl!(f32);
[INFO] [stdout]     | ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `numeric_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:107:49
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 | numeric_impl!(f64);
[INFO] [stdout]     | ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `numeric_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/any.rs:67:61
[INFO] [stdout]    |
[INFO] [stdout] 67 |                 let size = val.push_no_err(&mut lua as &mut AsMutLua<'lua>).forget_internal();
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn AsMutLua<'lua>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/any.rs:152:61
[INFO] [stdout]     |
[INFO] [stdout] 152 |                 let size = val.push_no_err(&mut lua as &mut AsMutLua<'lua>).forget_internal();
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn AsMutLua<'lua>`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lua_functions.rs:392:32
[INFO] [stdout]     |
[INFO] [stdout] 392 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lua_functions.rs:408:32
[INFO] [stdout]     |
[INFO] [stdout] 408 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/rust_tables.rs:24:39
[INFO] [stdout]    |
[INFO] [stdout] 24 |     for (elem, index) in iterator.zip((1..)) {
[INFO] [stdout]    |                                       ^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:447:32
[INFO] [stdout]     |
[INFO] [stdout] 447 |     fn cause(&self) -> Option<&Error> {
[INFO] [stdout]     |                                ^^^^^ help: use `dyn`: `dyn Error`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:678:21
[INFO] [stdout]     |
[INFO] [stdout] 678 |         let mut f = try!(lua_functions::LuaFunction::load(self, code));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/lib.rs:706:21
[INFO] [stdout]     |
[INFO] [stdout] 706 |         let mut f = try!(lua_functions::LuaFunction::load_from_reader(self, code));
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/lib.rs:230:24
[INFO] [stdout]     |
[INFO] [stdout] 230 |             res = mem::uninitialized();
[INFO] [stdout]     |                        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/lua_functions.rs:99:30
[INFO] [stdout]    |
[INFO] [stdout] 99 |                 buffer: mem::uninitialized(),
[INFO] [stdout]    |                              ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:150:52
[INFO] [stdout]     |
[INFO] [stdout] 150 |         let mut size: libc::size_t = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:193:52
[INFO] [stdout]     |
[INFO] [stdout] 193 |         let mut size: libc::size_t = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                    ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:257:47
[INFO] [stdout]     |
[INFO] [stdout] 257 |             let mut size: libc::size_t = mem::uninitialized();
[INFO] [stdout]     |                                               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 | integer_impl!(i8);
[INFO] [stdout]    | ------------------ in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 | integer_impl!(i16);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:37:49
[INFO] [stdout]    |
[INFO] [stdout] 37 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 | integer_impl!(i32);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 83 | unsigned_impl!(u8);
[INFO] [stdout]    | ------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 84 | unsigned_impl!(u16);
[INFO] [stdout]    | -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]   --> src/values.rs:72:49
[INFO] [stdout]    |
[INFO] [stdout] 72 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]    |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 85 | unsigned_impl!(u32);
[INFO] [stdout]    | -------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `unsigned_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:107:49
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 | numeric_impl!(f32);
[INFO] [stdout]     | ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `numeric_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::mem::uninitialized`: use `mem::MaybeUninit` instead
[INFO] [stdout]    --> src/values.rs:107:49
[INFO] [stdout]     |
[INFO] [stdout] 107 |                 let mut success = unsafe { mem::uninitialized() };
[INFO] [stdout]     |                                                 ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 119 | numeric_impl!(f64);
[INFO] [stdout]     | ------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this warning originates in the macro `numeric_impl` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/lua_functions.rs:536:69
[INFO] [stdout]     |
[INFO] [stdout] 536 |             Err(LuaError::ReadError(e)) => { assert_eq!("oh no!", e.description()) },
[INFO] [stdout]     |                                                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/functions_write.rs:368:26
[INFO] [stdout]     |
[INFO] [stdout] 368 |     fn push_to_lua(self, mut lua: &'a mut InsideCallback) -> Result<PushGuard<&'a mut InsideCallback>, (P, &'a mut InsideCallback)> {
[INFO] [stdout]     |                          ----^^^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/userdata.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn read_userdata<'t, 'c, T>(mut lua: &'c mut InsideCallback,
[INFO] [stdout]     |                                 ----^^^
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/functions_write.rs:368:26
[INFO] [stdout]     |
[INFO] [stdout] 368 |     fn push_to_lua(self, mut lua: &'a mut InsideCallback) -> Result<PushGuard<&'a mut InsideCallback>, (P, &'a mut InsideCallback)> {
[INFO] [stdout]     |                          ----^^^
[INFO] [stdout]     |                          |
[INFO] [stdout]     |                          help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 23 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/userdata.rs:124:33
[INFO] [stdout]     |
[INFO] [stdout] 124 | pub fn read_userdata<'t, 'c, T>(mut lua: &'c mut InsideCallback,
[INFO] [stdout]     |                                 ----^^^
[INFO] [stdout]     |                                 |
[INFO] [stdout]     |                                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this method call resolves to `<&[T; N] as IntoIterator>::into_iter` (due to backwards compatibility), but will resolve to <[T; N] as IntoIterator>::into_iter in Rust 2021.
[INFO] [stdout]    --> src/rust_tables.rs:442:52
[INFO] [stdout]     |
[INFO] [stdout] 442 |         let orig: HashMap<i32, f64> = [1., 2., 3.].into_iter().enumerate().map(|(k, v)| (k as i32, *v as f64)).collect();
[INFO] [stdout]     |                                                    ^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(array_into_iter)]` on by default
[INFO] [stdout]     = warning: this changes meaning in Rust 2021
[INFO] [stdout]     = note: for more information, see issue #66145 <https://github.com/rust-lang/rust/issues/66145>
[INFO] [stdout] help: use `.iter()` instead of `.into_iter()` to avoid ambiguity
[INFO] [stdout]     |
[INFO] [stdout] 442 |         let orig: HashMap<i32, f64> = [1., 2., 3.].iter().enumerate().map(|(k, v)| (k as i32, *v as f64)).collect();
[INFO] [stdout]     |                                                    ^^^^
[INFO] [stdout] help: or use `IntoIterator::into_iter(..)` instead of `.into_iter()` to explicitly iterate by value
[INFO] [stdout]     |
[INFO] [stdout] 442 |         let orig: HashMap<i32, f64> = IntoIterator::into_iter([1., 2., 3.]).enumerate().map(|(k, v)| (k as i32, *v as f64)).collect();
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^            ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 34 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.80s
[INFO] running `Command { std: "docker" "inspect" "1b9f74aa3f219b0fb4f6274b96ef1c8b6b4bdac4f376a2e8819364b0c433e8f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b9f74aa3f219b0fb4f6274b96ef1c8b6b4bdac4f376a2e8819364b0c433e8f7", kill_on_drop: false }`
[INFO] [stdout] 1b9f74aa3f219b0fb4f6274b96ef1c8b6b4bdac4f376a2e8819364b0c433e8f7
