[INFO] cloning repository https://github.com/kjvalencik/rust-adventofcode2018 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kjvalencik/rust-adventofcode2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 66874ce7d4ba095c19d79ba5e476df9cb8aa5402 [INFO] building kjvalencik/rust-adventofcode2018/66874ce7d4ba095c19d79ba5e476df9cb8aa5402 against master#44f415c1d617ebc7b931a243b7b321ef8a6ca47c for pr-142134-abi-ast-error [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkjvalencik%2Frust-adventofcode2018" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/kjvalencik/rust-adventofcode2018 on toolchain 44f415c1d617ebc7b931a243b7b321ef8a6ca47c [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/kjvalencik/rust-adventofcode2018 [INFO] finished tweaking git repo https://github.com/kjvalencik/rust-adventofcode2018 [INFO] tweaked toml for git repo https://github.com/kjvalencik/rust-adventofcode2018 written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/kjvalencik/rust-adventofcode2018 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" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded redox_syscall v0.1.43 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6e295f03c24ee018277a04bafb54a8b4c982c5f453a38889b68cb564e6b1bd03 [INFO] running `Command { std: "docker" "start" "-a" "6e295f03c24ee018277a04bafb54a8b4c982c5f453a38889b68cb564e6b1bd03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6e295f03c24ee018277a04bafb54a8b4c982c5f453a38889b68cb564e6b1bd03", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e295f03c24ee018277a04bafb54a8b4c982c5f453a38889b68cb564e6b1bd03", kill_on_drop: false }` [INFO] [stdout] 6e295f03c24ee018277a04bafb54a8b4c982c5f453a38889b68cb564e6b1bd03 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 70f7e768b66b5f54231d5f2213a33ffa090c2d0219b054eb153e1347d6d3c343 [INFO] running `Command { std: "docker" "start" "-a" "70f7e768b66b5f54231d5f2213a33ffa090c2d0219b054eb153e1347d6d3c343", kill_on_drop: false }` [INFO] [stderr] Compiling num-traits v0.2.6 [INFO] [stderr] Compiling libc v0.2.44 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling day06 v0.1.0 (/opt/rustwide/workdir/solutions/day06) [INFO] [stderr] Compiling day07 v0.1.0 (/opt/rustwide/workdir/solutions/day07) [INFO] [stderr] Compiling day01 v0.1.0 (/opt/rustwide/workdir/solutions/day01) [INFO] [stderr] Compiling day12 v0.1.0 (/opt/rustwide/workdir/solutions/day12) [INFO] [stderr] Compiling day09 v0.1.0 (/opt/rustwide/workdir/solutions/day09) [INFO] [stderr] Compiling day05 v0.1.0 (/opt/rustwide/workdir/solutions/day05) [INFO] [stderr] Compiling day08 v0.1.0 (/opt/rustwide/workdir/solutions/day08) [INFO] [stderr] Compiling day11 v0.1.0 (/opt/rustwide/workdir/solutions/day11) [INFO] [stderr] Compiling day13 v0.1.0 (/opt/rustwide/workdir/solutions/day13) [INFO] [stderr] Compiling day14 v0.1.0 (/opt/rustwide/workdir/solutions/day14) [INFO] [stderr] Compiling day10 v0.1.0 (/opt/rustwide/workdir/solutions/day10) [INFO] [stderr] Compiling day03 v0.1.0 (/opt/rustwide/workdir/solutions/day03) [INFO] [stderr] Compiling day02 v0.1.0 (/opt/rustwide/workdir/solutions/day02) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day10/src/main.rs:4:18 [INFO] [stdout] | [INFO] [stdout] 4 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day09/src/main.rs:3:21 [INFO] [stdout] | [INFO] [stdout] 3 | type BoxError = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 3 | type BoxError = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day13/src/main.rs:5:18 [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day12/src/main.rs:5:18 [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `serial` is never read [INFO] [stdout] --> solutions/day11/src/main.rs:6:2 [INFO] [stdout] | [INFO] [stdout] 5 | struct Day11 { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 6 | serial: i64, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Day11` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> solutions/day14/src/main.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | let mut elf = &mut self.elves[i]; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling time v0.1.40 [INFO] [stderr] Compiling chrono v0.4.6 [INFO] [stderr] Compiling day04 v0.1.0 (/opt/rustwide/workdir/solutions/day04) [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> solutions/day04/src/main.rs:78:23 [INFO] [stdout] | [INFO] [stdout] 78 | fn shifts<'a>(self: &'a Self, id: Id) -> impl Iterator + 'a { [INFO] [stdout] | ^^ ---- -- the lifetimes get resolved as `'a` [INFO] [stdout] | | | [INFO] [stdout] | this lifetime flows to the output the lifetimes get resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 78 | fn shifts<'a>(self: &'a Self, id: Id) -> impl Iterator + 'a { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.69s [INFO] running `Command { std: "docker" "inspect" "70f7e768b66b5f54231d5f2213a33ffa090c2d0219b054eb153e1347d6d3c343", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "70f7e768b66b5f54231d5f2213a33ffa090c2d0219b054eb153e1347d6d3c343", kill_on_drop: false }` [INFO] [stdout] 70f7e768b66b5f54231d5f2213a33ffa090c2d0219b054eb153e1347d6d3c343 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+44f415c1d617ebc7b931a243b7b321ef8a6ca47c" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6d6cc9989f9e7f5a5e68a7de74c9ee645d8154ff855adac1f7fdf843ff7f7797 [INFO] running `Command { std: "docker" "start" "-a" "6d6cc9989f9e7f5a5e68a7de74c9ee645d8154ff855adac1f7fdf843ff7f7797", kill_on_drop: false }` [INFO] [stderr] Compiling day04 v0.1.0 (/opt/rustwide/workdir/solutions/day04) [INFO] [stderr] Compiling day01 v0.1.0 (/opt/rustwide/workdir/solutions/day01) [INFO] [stderr] Compiling day07 v0.1.0 (/opt/rustwide/workdir/solutions/day07) [INFO] [stderr] Compiling day08 v0.1.0 (/opt/rustwide/workdir/solutions/day08) [INFO] [stderr] Compiling day05 v0.1.0 (/opt/rustwide/workdir/solutions/day05) [INFO] [stderr] Compiling day12 v0.1.0 (/opt/rustwide/workdir/solutions/day12) [INFO] [stderr] Compiling day06 v0.1.0 (/opt/rustwide/workdir/solutions/day06) [INFO] [stderr] Compiling day09 v0.1.0 (/opt/rustwide/workdir/solutions/day09) [INFO] [stderr] Compiling day14 v0.1.0 (/opt/rustwide/workdir/solutions/day14) [INFO] [stderr] Compiling day02 v0.1.0 (/opt/rustwide/workdir/solutions/day02) [INFO] [stderr] Compiling day10 v0.1.0 (/opt/rustwide/workdir/solutions/day10) [INFO] [stderr] Compiling day11 v0.1.0 (/opt/rustwide/workdir/solutions/day11) [INFO] [stderr] Compiling day13 v0.1.0 (/opt/rustwide/workdir/solutions/day13) [INFO] [stderr] Compiling day03 v0.1.0 (/opt/rustwide/workdir/solutions/day03) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day12/src/main.rs:5:18 [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day09/src/main.rs:3:21 [INFO] [stdout] | [INFO] [stdout] 3 | type BoxError = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 3 | type BoxError = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day10/src/main.rs:4:18 [INFO] [stdout] | [INFO] [stdout] 4 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 4 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> solutions/day13/src/main.rs:5:18 [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021! [INFO] [stdout] = note: for more information, see [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 5 | type Error = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `serial` is never read [INFO] [stdout] --> solutions/day11/src/main.rs:6:2 [INFO] [stdout] | [INFO] [stdout] 5 | struct Day11 { [INFO] [stdout] | ----- field in this struct [INFO] [stdout] 6 | serial: i64, [INFO] [stdout] | ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `Day11` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> solutions/day14/src/main.rs:61:8 [INFO] [stdout] | [INFO] [stdout] 61 | let mut elf = &mut self.elves[i]; [INFO] [stdout] | ----^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing [INFO] [stdout] --> solutions/day04/src/main.rs:78:23 [INFO] [stdout] | [INFO] [stdout] 78 | fn shifts<'a>(self: &'a Self, id: Id) -> impl Iterator + 'a { [INFO] [stdout] | ^^ ---- -- the lifetimes get resolved as `'a` [INFO] [stdout] | | | [INFO] [stdout] | this lifetime flows to the output the lifetimes get resolved as `'a` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default [INFO] [stdout] help: one option is to consistently use `'a` [INFO] [stdout] | [INFO] [stdout] 78 | fn shifts<'a>(self: &'a Self, id: Id) -> impl Iterator + 'a { [INFO] [stdout] | ++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 2.98s [INFO] running `Command { std: "docker" "inspect" "6d6cc9989f9e7f5a5e68a7de74c9ee645d8154ff855adac1f7fdf843ff7f7797", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d6cc9989f9e7f5a5e68a7de74c9ee645d8154ff855adac1f7fdf843ff7f7797", kill_on_drop: false }` [INFO] [stdout] 6d6cc9989f9e7f5a5e68a7de74c9ee645d8154ff855adac1f7fdf843ff7f7797