[INFO] fetching crate trait-gen 2.0.6...
[INFO] checking trait-gen-2.0.6 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate trait-gen 2.0.6 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate trait-gen 2.0.6
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate trait-gen 2.0.6
[INFO] tweaked toml for crates.io crate trait-gen 2.0.6 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate trait-gen 2.0.6 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 crates.io crate trait-gen 2.0.6 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] e6bb449c1504f0e984de5bbb573683841d4f08b114169c9e6b50be6c15161149
[INFO] running `Command { std: "docker" "start" "-a" "e6bb449c1504f0e984de5bbb573683841d4f08b114169c9e6b50be6c15161149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e6bb449c1504f0e984de5bbb573683841d4f08b114169c9e6b50be6c15161149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6bb449c1504f0e984de5bbb573683841d4f08b114169c9e6b50be6c15161149", kill_on_drop: false }`
[INFO] [stdout] e6bb449c1504f0e984de5bbb573683841d4f08b114169c9e6b50be6c15161149
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 2a7495b391404e3cc3bf4a6efc5376acff831cfaacd174d44fb6f947c4e66645
[INFO] running `Command { std: "docker" "start" "-a" "2a7495b391404e3cc3bf4a6efc5376acff831cfaacd174d44fb6f947c4e66645", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.101
[INFO] [stderr]    Compiling serde v1.0.219
[INFO] [stderr]     Checking unicode-ident v1.0.18
[INFO] [stderr]     Checking winnow v0.7.11
[INFO] [stderr]    Compiling target-triple v0.1.4
[INFO] [stderr]     Checking toml_writer v1.0.2
[INFO] [stderr]     Checking memchr v2.7.5
[INFO] [stderr]     Checking glob v0.3.2
[INFO] [stderr]     Checking quote v1.0.40
[INFO] [stderr]     Checking syn v2.0.106
[INFO] [stderr]    Compiling proc-macro-error-attr2 v2.0.0
[INFO] [stderr]     Checking toml_parser v1.0.2
[INFO] [stderr]     Checking serde_spanned v1.0.0
[INFO] [stderr]     Checking toml_datetime v0.7.0
[INFO] [stderr]     Checking serde_json v1.0.140
[INFO] [stderr]     Checking toml v0.9.5
[INFO] [stderr]     Checking proc-macro-error2 v2.0.1
[INFO] [stderr]     Checking trait-gen v2.0.6 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking trybuild v1.0.110
[INFO] [stdout] error: this type will no longer be must used: Result<u8, Infallible>
[INFO] [stdout]   --> tests/integration.rs:52:25
[INFO] [stdout]    |
[INFO] [stdout] 52 |       #[trait_gen(A, B -> u8, u16)]
[INFO] [stdout]    |  _________________________^
[INFO] [stdout] 53 | |     impl Add<Wrapper<B>> for Wrapper<A> {
[INFO] [stdout] 54 | |         type Output = Wrapper<A>;
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             Wrapper::<A>(self.0 + A::try_from(rhs.0).expect(&format!("overflow when converting {} to ${A}", rhs.0)))
[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<u16, Infallible>
[INFO] [stdout]   --> tests/integration.rs:52:29
[INFO] [stdout]    |
[INFO] [stdout] 52 |       #[trait_gen(A, B -> u8, u16)]
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 53 | |     impl Add<Wrapper<B>> for Wrapper<A> {
[INFO] [stdout] 54 | |         type Output = Wrapper<A>;
[INFO] [stdout] ...  |
[INFO] [stdout] 57 | |             Wrapper::<A>(self.0 + A::try_from(rhs.0).expect(&format!("overflow when converting {} to ${A}", rhs.0)))
[INFO] [stdout]    | |____________________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]   --> tests/integration.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |       #[trait_gen(T, U -> u8, u16, u32)]
[INFO] [stdout]    |  _____________________________^
[INFO] [stdout] 85 | |     #[trait_gen_if(!T in U)]
[INFO] [stdout] 86 | |     impl From<Wrapper<U>> for Wrapper<T> {
[INFO] [stdout] 87 | |         /// converts ${U} to ${T}
[INFO] [stdout] 88 | |         fn from(value: Wrapper<U>) -> Self {
[INFO] [stdout] 89 | |             Wrapper(T::try_from(value.0).expect(&format!("overflow when converting {} to ${T}", value.0)))
[INFO] [stdout]    | |________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]   --> tests/integration.rs:84:34
[INFO] [stdout]    |
[INFO] [stdout] 84 |       #[trait_gen(T, U -> u8, u16, u32)]
[INFO] [stdout]    |  __________________________________^
[INFO] [stdout] 85 | |     #[trait_gen_if(!T in U)]
[INFO] [stdout] 86 | |     impl From<Wrapper<U>> for Wrapper<T> {
[INFO] [stdout] 87 | |         /// converts ${U} to ${T}
[INFO] [stdout] 88 | |         fn from(value: Wrapper<U>) -> Self {
[INFO] [stdout] 89 | |             Wrapper(T::try_from(value.0).expect(&format!("overflow when converting {} to ${T}", value.0)))
[INFO] [stdout]    | |________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u16, Infallible>
[INFO] [stdout]    --> tests/integration.rs:117:31
[INFO] [stdout]     |
[INFO] [stdout] 117 |       #[trait_gen(T != U -> u8, u16, u32)]
[INFO] [stdout]     |  _______________________________^
[INFO] [stdout] 118 | |     impl From<Wrapper<U>> for Wrapper<T> {
[INFO] [stdout] 119 | |         /// converts ${U} to ${T}
[INFO] [stdout] 120 | |         fn from(value: Wrapper<U>) -> Self {
[INFO] [stdout] 121 | |             Wrapper(T::try_from(value.0).expect(&format!("overflow when converting {} to ${T}", value.0)))
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<u32, Infallible>
[INFO] [stdout]    --> tests/integration.rs:117:36
[INFO] [stdout]     |
[INFO] [stdout] 117 |       #[trait_gen(T != U -> u8, u16, u32)]
[INFO] [stdout]     |  ____________________________________^
[INFO] [stdout] 118 | |     impl From<Wrapper<U>> for Wrapper<T> {
[INFO] [stdout] 119 | |         /// converts ${U} to ${T}
[INFO] [stdout] 120 | |         fn from(value: Wrapper<U>) -> Self {
[INFO] [stdout] 121 | |             Wrapper(T::try_from(value.0).expect(&format!("overflow when converting {} to ${T}", value.0)))
[INFO] [stdout]     | |________________________________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `trait-gen` (test "integration") due to 6 previous errors
[INFO] running `Command { std: "docker" "inspect" "2a7495b391404e3cc3bf4a6efc5376acff831cfaacd174d44fb6f947c4e66645", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a7495b391404e3cc3bf4a6efc5376acff831cfaacd174d44fb6f947c4e66645", kill_on_drop: false }`
[INFO] [stdout] 2a7495b391404e3cc3bf4a6efc5376acff831cfaacd174d44fb6f947c4e66645
