[INFO] cloning repository https://github.com/Ved-s/smoldata
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Ved-s/smoldata" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVed-s%2Fsmoldata", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVed-s%2Fsmoldata'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3266a9c493e3892c01543e6f053ebdb8d7f66bbe
[INFO] checking Ved-s/smoldata against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FVed-s%2Fsmoldata" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Ved-s/smoldata
[INFO] finished tweaking git repo https://github.com/Ved-s/smoldata
[INFO] tweaked toml for git repo https://github.com/Ved-s/smoldata written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Ved-s/smoldata 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] crate git repo https://github.com/Ved-s/smoldata already has a lockfile, it will not be regenerated
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 6894be39b3b1caf8799aa303ec6cc1e802661b2be7d865927f075ef2b1ab3abd
[INFO] running `Command { std: "docker" "start" "-a" "6894be39b3b1caf8799aa303ec6cc1e802661b2be7d865927f075ef2b1ab3abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6894be39b3b1caf8799aa303ec6cc1e802661b2be7d865927f075ef2b1ab3abd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6894be39b3b1caf8799aa303ec6cc1e802661b2be7d865927f075ef2b1ab3abd", kill_on_drop: false }`
[INFO] [stdout] 6894be39b3b1caf8799aa303ec6cc1e802661b2be7d865927f075ef2b1ab3abd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 68982f884f915987849bf7c491a5630032003c148111b07070d818161a7130ae
[INFO] running `Command { std: "docker" "start" "-a" "68982f884f915987849bf7c491a5630032003c148111b07070d818161a7130ae", kill_on_drop: false }`
[INFO] [stderr]    Compiling smoldata v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]    Compiling thiserror-impl v1.0.63
[INFO] [stderr]    Compiling smoldata_derive v0.1.0 (/opt/rustwide/workdir/derive)
[INFO] [stderr]     Checking thiserror v1.0.63
[INFO] [stdout] warning: enum `TagReadError` is never used
[INFO] [stdout]    --> src/tag.rs:358:10
[INFO] [stdout]     |
[INFO] [stdout] 358 | pub enum TagReadError {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InvalidTagError` is never constructed
[INFO] [stdout]    --> src/tag.rs:368:12
[INFO] [stdout]     |
[INFO] [stdout] 368 | pub struct InvalidTagError(u8);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Option` is never constructed
[INFO] [stdout]    --> src/tests.rs:373:16
[INFO] [stdout]     |
[INFO] [stdout] 373 |         struct Option<T>(T);
[INFO] [stdout]     |                ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Data` is never constructed
[INFO] [stdout]    --> src/tests.rs:377:16
[INFO] [stdout]     |
[INFO] [stdout] 377 |         struct Data {
[INFO] [stdout]     |                ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestUnitStruct` is never constructed
[INFO] [stdout]    --> src/tests.rs:428:8
[INFO] [stdout]     |
[INFO] [stdout] 428 | struct TestUnitStruct;
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestNewtypeStruct` is never constructed
[INFO] [stdout]    --> src/tests.rs:432:8
[INFO] [stdout]     |
[INFO] [stdout] 432 | struct TestNewtypeStruct<T>(T);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestTupleStruct` is never constructed
[INFO] [stdout]    --> src/tests.rs:436:8
[INFO] [stdout]     |
[INFO] [stdout] 436 | struct TestTupleStruct<T, U>(T, TestNewtypeStruct<T>, U);
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `TestFieldStruct` is never constructed
[INFO] [stdout]    --> src/tests.rs:440:8
[INFO] [stdout]     |
[INFO] [stdout] 440 | struct TestFieldStruct<T, U, V> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TestEnum` is never used
[INFO] [stdout]    --> src/tests.rs:448:6
[INFO] [stdout]     |
[INFO] [stdout] 448 | enum TestEnum<T> {
[INFO] [stdout]     |      ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:379:48
[INFO] [stdout]     |
[INFO] [stdout] 379 |             reader::Primitive::U16(v) => match Self::try_from(v) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:431:48
[INFO] [stdout]     |
[INFO] [stdout] 431 |             reader::Primitive::I16(v) => match Self::try_from(v) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/reader.rs:553:21
[INFO] [stdout]     |
[INFO] [stdout] 553 |     pub fn read_tag(&mut self) -> ReadResult<Tag> {
[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] 553 |     pub fn read_tag(&mut self) -> ReadResult<Tag<'_>> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/reader.rs:557:21
[INFO] [stdout]     |
[INFO] [stdout] 557 |     pub fn peek_tag(&mut self) -> ReadResult<&Tag> {
[INFO] [stdout]     |                     ^^^^^^^^^                ^^^^
[INFO] [stdout]     |                     |                        ||
[INFO] [stdout]     |                     |                        |the same lifetime is hidden here
[INFO] [stdout]     |                     |                        the same lifetime is elided here
[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] 557 |     pub fn peek_tag(&mut self) -> ReadResult<&Tag<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `TagReadError` is never used
[INFO] [stdout]    --> src/tag.rs:358:10
[INFO] [stdout]     |
[INFO] [stdout] 358 | pub enum TagReadError {
[INFO] [stdout]     |          ^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `InvalidTagError` is never constructed
[INFO] [stdout]    --> src/tag.rs:368:12
[INFO] [stdout]     |
[INFO] [stdout] 368 | pub struct InvalidTagError(u8);
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<usize, Infallible>
[INFO] [stdout]    --> src/lib.rs:379:48
[INFO] [stdout]     |
[INFO] [stdout] 379 |             reader::Primitive::U16(v) => match Self::try_from(v) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<isize, Infallible>
[INFO] [stdout]    --> src/lib.rs:431:48
[INFO] [stdout]     |
[INFO] [stdout] 431 |             reader::Primitive::I16(v) => match Self::try_from(v) {
[INFO] [stdout]     |                                                ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/reader.rs:553:21
[INFO] [stdout]     |
[INFO] [stdout] 553 |     pub fn read_tag(&mut self) -> ReadResult<Tag> {
[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] 553 |     pub fn read_tag(&mut self) -> ReadResult<Tag<'_>> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/reader.rs:557:21
[INFO] [stdout]     |
[INFO] [stdout] 557 |     pub fn peek_tag(&mut self) -> ReadResult<&Tag> {
[INFO] [stdout]     |                     ^^^^^^^^^                ^^^^
[INFO] [stdout]     |                     |                        ||
[INFO] [stdout]     |                     |                        |the same lifetime is hidden here
[INFO] [stdout]     |                     |                        the same lifetime is elided here
[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] 557 |     pub fn peek_tag(&mut self) -> ReadResult<&Tag<'_>> {
[INFO] [stdout]     |                                                  ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smoldata` (lib test) due to 2 previous errors; 11 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `smoldata` (lib) due to 2 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "68982f884f915987849bf7c491a5630032003c148111b07070d818161a7130ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68982f884f915987849bf7c491a5630032003c148111b07070d818161a7130ae", kill_on_drop: false }`
[INFO] [stdout] 68982f884f915987849bf7c491a5630032003c148111b07070d818161a7130ae
