[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 [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> for Wrapper { [INFO] [stdout] 54 | | type Output = Wrapper; [INFO] [stdout] ... | [INFO] [stdout] 57 | | Wrapper::(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 [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> for Wrapper { [INFO] [stdout] 54 | | type Output = Wrapper; [INFO] [stdout] ... | [INFO] [stdout] 57 | | Wrapper::(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 [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> for Wrapper { [INFO] [stdout] 87 | | /// converts ${U} to ${T} [INFO] [stdout] 88 | | fn from(value: Wrapper) -> 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 [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> for Wrapper { [INFO] [stdout] 87 | | /// converts ${U} to ${T} [INFO] [stdout] 88 | | fn from(value: Wrapper) -> 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 [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> for Wrapper { [INFO] [stdout] 119 | | /// converts ${U} to ${T} [INFO] [stdout] 120 | | fn from(value: Wrapper) -> 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 [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> for Wrapper { [INFO] [stdout] 119 | | /// converts ${U} to ${T} [INFO] [stdout] 120 | | fn from(value: Wrapper) -> 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