[INFO] fetching crate jzon 0.12.5...
[INFO] checking jzon-0.12.5 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate jzon 0.12.5 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate jzon 0.12.5
[INFO] finished tweaking crates.io crate jzon 0.12.5
[INFO] tweaked toml for crates.io crate jzon 0.12.5 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate jzon 0.12.5 on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4980e1328972f199d3ba86da0f2d837ce95548cab3b675d1421bab8991730f22
[INFO] running `Command { std: "docker" "start" "-a" "4980e1328972f199d3ba86da0f2d837ce95548cab3b675d1421bab8991730f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4980e1328972f199d3ba86da0f2d837ce95548cab3b675d1421bab8991730f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4980e1328972f199d3ba86da0f2d837ce95548cab3b675d1421bab8991730f22", kill_on_drop: false }`
[INFO] [stdout] 4980e1328972f199d3ba86da0f2d837ce95548cab3b675d1421bab8991730f22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1b785f9a00808109849ce0450b3cacdf4deb3ede8827ef8ac52fd2ec1a1ae0a
[INFO] running `Command { std: "docker" "start" "-a" "f1b785f9a00808109849ce0450b3cacdf4deb3ede8827ef8ac52fd2ec1a1ae0a", kill_on_drop: false }`
[INFO] [stderr]     Checking jzon v0.12.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:433:30
[INFO] [stdout]     |
[INFO] [stdout] 433 |             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout]     |                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 433 -             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout] 433 +             b'0' ..= b'9' => ch - b'0',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:434:30
[INFO] [stdout]     |
[INFO] [stdout] 434 |             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 434 -             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout] 434 +             b'a' ..= b'f' => ch + 10 - b'a',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:435:30
[INFO] [stdout]     |
[INFO] [stdout] 435 |             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 435 -             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout] 435 +             b'A' ..= b'F' => ch + 10 - b'A',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:433:30
[INFO] [stdout]     |
[INFO] [stdout] 433 |             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout]     |                              ^         ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 433 -             b'0' ..= b'9' => (ch - b'0'),
[INFO] [stdout] 433 +             b'0' ..= b'9' => ch - b'0',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:434:30
[INFO] [stdout]     |
[INFO] [stdout] 434 |             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 434 -             b'a' ..= b'f' => (ch + 10 - b'a'),
[INFO] [stdout] 434 +             b'a' ..= b'f' => ch + 10 - b'a',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]    --> src/parser.rs:435:30
[INFO] [stdout]     |
[INFO] [stdout] 435 |             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout]     |                              ^              ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 435 -             b'A' ..= b'F' => (ch + 10 - b'A'),
[INFO] [stdout] 435 +             b'A' ..= b'F' => ch + 10 - b'A',
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:505:20
[INFO] [stdout]     |
[INFO] [stdout] 505 |     pub fn members(&self) -> Members {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 505 |     pub fn members(&self) -> Members<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:516:24
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn members_mut(&mut self) -> MembersMut {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn members_mut(&mut self) -> MembersMut<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:548:20
[INFO] [stdout]     |
[INFO] [stdout] 548 |     pub fn entries(&self) -> Entries {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 548 |     pub fn entries(&self) -> Entries<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:560:24
[INFO] [stdout]     |
[INFO] [stdout] 560 |     pub fn entries_mut(&mut self) -> EntriesMut {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 560 |     pub fn entries_mut(&mut self) -> EntriesMut<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util/diyfp.rs:53:22
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let u: u64 = mem::transmute(d);
[INFO] [stdout]    |                      --------------^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: replace this with: `f64::to_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/object.rs:516:17
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/object.rs:523:21
[INFO] [stdout]     |
[INFO] [stdout] 523 |     pub fn iter_mut(&mut self) -> IterMut {
[INFO] [stdout]     |                     ^^^^^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 523 |     pub fn iter_mut(&mut self) -> IterMut<'_> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]    --> src/number.rs:471:17
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 TryFrom::try_from(mantissa).map_err(Into::into)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 495 | impl_signed!(isize, i8, i16, i32, i64);
[INFO] [stdout]     | -------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `impl_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, Infallible>
[INFO] [stdout]    --> src/number.rs:427:17
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 TryFrom::try_from(mantissa).map_err(Into::into)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 496 | impl_unsigned!(usize, u8, u16, u32, u64);
[INFO] [stdout]     | ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:505:20
[INFO] [stdout]     |
[INFO] [stdout] 505 |     pub fn members(&self) -> Members {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 505 |     pub fn members(&self) -> Members<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jzon` (lib test) due to 2 previous errors; 10 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:516:24
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn members_mut(&mut self) -> MembersMut {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn members_mut(&mut self) -> MembersMut<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:548:20
[INFO] [stdout]     |
[INFO] [stdout] 548 |     pub fn entries(&self) -> Entries {
[INFO] [stdout]     |                    ^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 548 |     pub fn entries(&self) -> Entries<'_> {
[INFO] [stdout]     |                                     ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/value/mod.rs:560:24
[INFO] [stdout]     |
[INFO] [stdout] 560 |     pub fn entries_mut(&mut self) -> EntriesMut {
[INFO] [stdout]     |                        ^^^^^^^^^     ^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                        |
[INFO] [stdout]     |                        the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 560 |     pub fn entries_mut(&mut self) -> EntriesMut<'_> {
[INFO] [stdout]     |                                                ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/util/diyfp.rs:53:22
[INFO] [stdout]    |
[INFO] [stdout] 53 |         let u: u64 = mem::transmute(d);
[INFO] [stdout]    |                      --------------^^^
[INFO] [stdout]    |                      |
[INFO] [stdout]    |                      help: replace this with: `f64::to_bits`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/object.rs:516:17
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn iter(&self) -> Iter {
[INFO] [stdout]     |                 ^^^^^     ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 516 |     pub fn iter(&self) -> Iter<'_> {
[INFO] [stdout]     |                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/object.rs:523:21
[INFO] [stdout]     |
[INFO] [stdout] 523 |     pub fn iter_mut(&mut self) -> IterMut {
[INFO] [stdout]     |                     ^^^^^^^^^     ^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 523 |     pub fn iter_mut(&mut self) -> IterMut<'_> {
[INFO] [stdout]     |                                          ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<i64, Infallible>
[INFO] [stdout]    --> src/number.rs:471:17
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 TryFrom::try_from(mantissa).map_err(Into::into)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 495 | impl_signed!(isize, i8, i16, i32, i64);
[INFO] [stdout]     | -------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout]     = note: this error originates in the macro `impl_signed` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: std::result::Result<u64, Infallible>
[INFO] [stdout]    --> src/number.rs:427:17
[INFO] [stdout]     |
[INFO] [stdout] 427 |                 TryFrom::try_from(mantissa).map_err(Into::into)
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 496 | impl_unsigned!(usize, u8, u16, u32, u64);
[INFO] [stdout]     | ---------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: this error originates in the macro `impl_unsigned` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `jzon` (lib) due to 2 previous errors; 10 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "f1b785f9a00808109849ce0450b3cacdf4deb3ede8827ef8ac52fd2ec1a1ae0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1b785f9a00808109849ce0450b3cacdf4deb3ede8827ef8ac52fd2ec1a1ae0a", kill_on_drop: false }`
[INFO] [stdout] f1b785f9a00808109849ce0450b3cacdf4deb3ede8827ef8ac52fd2ec1a1ae0a
