[INFO] cloning repository https://github.com/jeysal/rust-playground [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jeysal/rust-playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeysal%2Frust-playground", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeysal%2Frust-playground'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4bc7c13833bb9d5ee9017012e479ed99a23a78ee [INFO] checking jeysal/rust-playground against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjeysal%2Frust-playground" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/jeysal/rust-playground on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/jeysal/rust-playground [INFO] finished tweaking git repo https://github.com/jeysal/rust-playground [INFO] tweaked toml for git repo https://github.com/jeysal/rust-playground written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/jeysal/rust-playground 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded aho-corasick v0.6.7 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] d2237ef0da9b071cf6a1df1c82372bfeee954c6268dfae5cad150f1e4517d637 [INFO] running `Command { std: "docker" "start" "-a" "d2237ef0da9b071cf6a1df1c82372bfeee954c6268dfae5cad150f1e4517d637", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "d2237ef0da9b071cf6a1df1c82372bfeee954c6268dfae5cad150f1e4517d637", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d2237ef0da9b071cf6a1df1c82372bfeee954c6268dfae5cad150f1e4517d637", kill_on_drop: false }` [INFO] [stdout] d2237ef0da9b071cf6a1df1c82372bfeee954c6268dfae5cad150f1e4517d637 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6d8a59b8536b678df15d154c49db50b62e7bc15641bff21607f94375d5e84586 [INFO] running `Command { std: "docker" "start" "-a" "6d8a59b8536b678df15d154c49db50b62e7bc15641bff21607f94375d5e84586", kill_on_drop: false }` [INFO] [stderr] Checking libc v0.2.43 [INFO] [stderr] Compiling version_check v0.1.4 [INFO] [stderr] Checking ucd-util v0.1.1 [INFO] [stderr] Compiling regex v1.0.4 [INFO] [stderr] Checking utf8-ranges v1.0.1 [INFO] [stderr] Checking hello v0.1.0 (/opt/rustwide/workdir/hello) [INFO] [stderr] Checking largest v0.1.0 (/opt/rustwide/workdir/largest) [INFO] [stderr] Checking temp_conv v0.1.0 (/opt/rustwide/workdir/temp_conv) [INFO] [stderr] Checking impl_conflict v0.1.0 (/opt/rustwide/workdir/impl_conflict) [INFO] [stderr] Checking fibonacci v0.1.0 (/opt/rustwide/workdir/fibonacci) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> hello/src/lib.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | type Job = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) 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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 16 | type Job = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `s` is never read [INFO] [stdout] --> impl_conflict/src/main.rs:11:3 [INFO] [stdout] | [INFO] [stdout] 10 | struct A { [INFO] [stdout] | - field in this struct [INFO] [stdout] 11 | s: String, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `A` 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: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> hello/src/lib.rs:16:16 [INFO] [stdout] | [INFO] [stdout] 16 | type Job = Box; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) 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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 16 | type Job = Box; [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Checking regex-syntax v0.6.2 [INFO] [stdout] warning: field `s` is never read [INFO] [stdout] --> impl_conflict/src/main.rs:11:3 [INFO] [stdout] | [INFO] [stdout] 10 | struct A { [INFO] [stdout] | - field in this struct [INFO] [stdout] 11 | s: String, [INFO] [stdout] | ^ [INFO] [stdout] | [INFO] [stdout] = note: `A` 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: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Compiling lazy_static v1.1.0 [INFO] [stderr] Checking memchr v2.0.2 [INFO] [stderr] Checking rand v0.4.3 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking aho-corasick v0.6.7 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking guess v0.1.0 (/opt/rustwide/workdir/guess) [INFO] [stderr] Checking minigrep v0.1.0 (/opt/rustwide/workdir/minigrep) [INFO] [stderr] Checking collections v0.1.0 (/opt/rustwide/workdir/collections) [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> minigrep/src/lib.rs:7:61 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn run(pattern: &str, filename: &str) -> Result<(), Box> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) 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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 7 | pub fn run(pattern: &str, filename: &str) -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> minigrep/src/lib.rs:7:61 [INFO] [stdout] | [INFO] [stdout] 7 | pub fn run(pattern: &str, filename: &str) -> Result<(), Box> { [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = warning: this is accepted in the current edition (Rust 2015) 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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 7 | pub fn run(pattern: &str, filename: &str) -> Result<(), Box> { [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.33s [INFO] running `Command { std: "docker" "inspect" "6d8a59b8536b678df15d154c49db50b62e7bc15641bff21607f94375d5e84586", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6d8a59b8536b678df15d154c49db50b62e7bc15641bff21607f94375d5e84586", kill_on_drop: false }` [INFO] [stdout] 6d8a59b8536b678df15d154c49db50b62e7bc15641bff21607f94375d5e84586