[INFO] fetching crate step_polyfill 0.1.0... [INFO] checking step_polyfill-0.1.0 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] extracting crate step_polyfill 0.1.0 into /workspace/builds/worker-7-tc2/source [INFO] started tweaking crates.io crate step_polyfill 0.1.0 [INFO] finished tweaking crates.io crate step_polyfill 0.1.0 [INFO] tweaked toml for crates.io crate step_polyfill 0.1.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml [INFO] validating manifest of crates.io crate step_polyfill 0.1.0 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 96f9ff4fe2c41eb47e21cc90e9c889c5c58b752978294a63154bcbd43946d372 [INFO] running `Command { std: "docker" "start" "-a" "96f9ff4fe2c41eb47e21cc90e9c889c5c58b752978294a63154bcbd43946d372", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "96f9ff4fe2c41eb47e21cc90e9c889c5c58b752978294a63154bcbd43946d372", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "96f9ff4fe2c41eb47e21cc90e9c889c5c58b752978294a63154bcbd43946d372", kill_on_drop: false }` [INFO] [stdout] 96f9ff4fe2c41eb47e21cc90e9c889c5c58b752978294a63154bcbd43946d372 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3107c2872f0062b768b567fb1ba78e394fd41b7e9205484d82e0225d0a990822 [INFO] running `Command { std: "docker" "start" "-a" "3107c2872f0062b768b567fb1ba78e394fd41b7e9205484d82e0225d0a990822", kill_on_drop: false }` [INFO] [stderr] Checking step_polyfill v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:189:21 [INFO] [stdout] | [INFO] [stdout] 189 | usize::try_from(count).ok() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [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 `step_integer_impl` (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: Result [INFO] [stdout] --> src/lib.rs:197:29 [INFO] [stdout] | [INFO] [stdout] 197 | let count = <$Unsigned>::try_from(count).ok()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `step_integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:203:29 [INFO] [stdout] | [INFO] [stdout] 203 | let count = <$Unsigned>::try_from(count).ok()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `step_integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `step_polyfill` (lib) due to 3 previous errors [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:189:21 [INFO] [stdout] | [INFO] [stdout] 189 | usize::try_from(count).ok() [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [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 `step_integer_impl` (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: Result [INFO] [stdout] --> src/lib.rs:197:29 [INFO] [stdout] | [INFO] [stdout] 197 | let count = <$Unsigned>::try_from(count).ok()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `step_integer_impl` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: this type will no longer be must used: Result [INFO] [stdout] --> src/lib.rs:203:29 [INFO] [stdout] | [INFO] [stdout] 203 | let count = <$Unsigned>::try_from(count).ok()?; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 211 | / step_integer_impl!{ [INFO] [stdout] 212 | | i8, u8; i16, u16; i32, u32; i64, u64; i128, u128; isize, usize; [INFO] [stdout] 213 | | u8, u8; u16, u16; u32, u32; u64, u64; u128, u128; usize, usize [INFO] [stdout] 214 | | } [INFO] [stdout] | |_- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `step_integer_impl` (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: Result [INFO] [stdout] --> src/lib.rs:268:29 [INFO] [stdout] | [INFO] [stdout] 268 | let count = usize::try_from($count).ok(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 293 | / step_test!{ [INFO] [stdout] 294 | | test_i8, i8, -1, 1, 2, Some(-2), Some(2); [INFO] [stdout] 295 | | test_i16, i16, -1, 1, 2, Some(-2), Some(2); [INFO] [stdout] 296 | | test_i32, i32, -1, 1, 2, Some(-2), Some(2); [INFO] [stdout] ... | [INFO] [stdout] 323 | | test_char_range, char, '\u{0000}', char::MAX, 0x10f7ff, None, None [INFO] [stdout] 324 | | } [INFO] [stdout] | |_____- in this macro invocation [INFO] [stdout] | [INFO] [stdout] = note: this error originates in the macro `step_test` (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] error: could not compile `step_polyfill` (lib test) due to 4 previous errors [INFO] running `Command { std: "docker" "inspect" "3107c2872f0062b768b567fb1ba78e394fd41b7e9205484d82e0225d0a990822", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "3107c2872f0062b768b567fb1ba78e394fd41b7e9205484d82e0225d0a990822", kill_on_drop: false }` [INFO] [stdout] 3107c2872f0062b768b567fb1ba78e394fd41b7e9205484d82e0225d0a990822