[INFO] cloning repository https://github.com/fcsonline/trawler [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fcsonline/trawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 4360162f2d7a64e0b931dc238e6d00ec359e1ae3 [INFO] checking fcsonline/trawler against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffcsonline%2Ftrawler" "/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/fcsonline/trawler 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/fcsonline/trawler [INFO] finished tweaking git repo https://github.com/fcsonline/trawler [INFO] tweaked toml for git repo https://github.com/fcsonline/trawler written to /workspace/builds/worker-2-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/fcsonline/trawler 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 slab v0.4.1 [INFO] [stderr] Downloaded winapi-util v0.1.1 [INFO] [stderr] Downloaded same-file v1.0.4 [INFO] [stderr] Downloaded walkdir v2.2.7 [INFO] [stderr] Downloaded notify v4.0.6 [INFO] [stderr] Downloaded mio-extras v2.0.5 [INFO] [stderr] Downloaded rand_core v0.2.2 [INFO] [stderr] Downloaded redox_syscall v0.1.44 [INFO] [stderr] Downloaded fsevent v0.2.17 [INFO] [stderr] Downloaded filetime v0.2.4 [INFO] [stderr] Downloaded bitflags v0.7.0 [INFO] [stderr] Downloaded lazy_static v1.2.0 [INFO] [stderr] Downloaded scopeguard v0.3.3 [INFO] [stderr] Downloaded lock_api v0.1.5 [INFO] [stderr] Downloaded libc v0.2.45 [INFO] [stderr] Downloaded rand v0.5.5 [INFO] [stderr] Downloaded winapi v0.3.6 [INFO] [stderr] Downloaded futures v0.1.25 [INFO] [stderr] Downloaded crossbeam-utils v0.6.3 [INFO] [stderr] Downloaded stable_deref_trait v1.1.1 [INFO] [stderr] Downloaded owning_ref v0.4.0 [INFO] [stderr] Downloaded smallvec v0.6.7 [INFO] [stderr] Downloaded parking_lot_core v0.3.1 [INFO] [stderr] Downloaded parking_lot v0.6.4 [INFO] [stderr] Downloaded bytes v0.4.11 [INFO] [stderr] Downloaded tokio-io v0.1.10 [INFO] [stderr] Downloaded tokio-reactor v0.1.7 [INFO] [stderr] Downloaded inotify v0.6.1 [INFO] [stderr] Downloaded log v0.4.6 [INFO] [stderr] Downloaded fsevent-sys v0.1.6 [INFO] [stderr] Downloaded inotify-sys v0.1.3 [INFO] [stderr] Downloaded num_cpus v1.9.0 [INFO] [stderr] Downloaded rand_core v0.3.0 [INFO] [stderr] Downloaded tokio-executor v0.1.5 [INFO] [stderr] Downloaded byteorder v1.2.7 [INFO] [stderr] Downloaded bitflags v1.0.4 [INFO] [stderr] Downloaded cfg-if v0.1.6 [INFO] [stderr] Downloaded mio v0.6.16 [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 67c79f367e37324126a9bc58b016751360c1b722aea381c8435a978f0ff69236 [INFO] running `Command { std: "docker" "start" "-a" "67c79f367e37324126a9bc58b016751360c1b722aea381c8435a978f0ff69236", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "67c79f367e37324126a9bc58b016751360c1b722aea381c8435a978f0ff69236", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "67c79f367e37324126a9bc58b016751360c1b722aea381c8435a978f0ff69236", kill_on_drop: false }` [INFO] [stdout] 67c79f367e37324126a9bc58b016751360c1b722aea381c8435a978f0ff69236 [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=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] 8f4d72da1c2bd63f92690d02bedf969da5254ed5fa6c8200180f02be7c1d9a91 [INFO] running `Command { std: "docker" "start" "-a" "8f4d72da1c2bd63f92690d02bedf969da5254ed5fa6c8200180f02be7c1d9a91", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.45 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking void v1.0.2 [INFO] [stderr] Checking rand_core v0.3.0 [INFO] [stderr] Checking stable_deref_trait v1.1.1 [INFO] [stderr] Checking lazycell v1.2.1 [INFO] [stderr] Checking slab v0.4.1 [INFO] [stderr] Compiling parking_lot_core v0.3.1 [INFO] [stderr] Checking log v0.4.6 [INFO] [stderr] Checking byteorder v1.2.7 [INFO] [stderr] Checking unreachable v1.0.0 [INFO] [stderr] Checking owning_ref v0.4.0 [INFO] [stderr] Checking scopeguard v0.3.3 [INFO] [stderr] Checking smallvec v0.6.7 [INFO] [stderr] Checking rand_core v0.2.2 [INFO] [stderr] Checking futures v0.1.25 [INFO] [stderr] Checking lock_api v0.1.5 [INFO] [stderr] Checking crossbeam-utils v0.6.3 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Checking bitflags v1.0.4 [INFO] [stderr] Checking same-file v1.0.4 [INFO] [stderr] Checking walkdir v2.2.7 [INFO] [stderr] Checking iovec v0.1.2 [INFO] [stderr] Checking rand v0.5.5 [INFO] [stderr] Checking net2 v0.2.33 [INFO] [stderr] Checking num_cpus v1.9.0 [INFO] [stderr] Checking inotify-sys v0.1.3 [INFO] [stderr] Checking filetime v0.2.4 [INFO] [stderr] Checking bytes v0.4.11 [INFO] [stderr] Checking mio v0.6.16 [INFO] [stderr] Checking mio-extras v2.0.5 [INFO] [stderr] Checking tokio-io v0.1.10 [INFO] [stderr] Checking tokio-executor v0.1.5 [INFO] [stderr] Checking parking_lot v0.6.4 [INFO] [stderr] Checking tokio-reactor v0.1.7 [INFO] [stderr] Checking inotify v0.6.1 [INFO] [stderr] Checking notify v4.0.6 [INFO] [stderr] Checking trawler v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | mod lib; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: lib.rs is the root of this crate's library target [INFO] [stdout] = help: to refer to it from other targets, use the library's name as the path [INFO] [stdout] = note: `#[warn(special_module_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib/step.rs:4:59 [INFO] [stdout] | [INFO] [stdout] 4 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>; [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 4 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>; [INFO] [stdout] 4 + fn execute(&self, buffer: &Buffer) -> std::io::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/write.rs:18:59 [INFO] [stdout] | [INFO] [stdout] 18 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 18 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 18 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/hash.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/echo.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/reverse.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: found module declaration for lib.rs [INFO] [stdout] --> src/main.rs:10:1 [INFO] [stdout] | [INFO] [stdout] 10 | mod lib; [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: lib.rs is the root of this crate's library target [INFO] [stdout] = help: to refer to it from other targets, use the library's name as the path [INFO] [stdout] = note: `#[warn(special_module_name)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib/catalog.rs:8:36 [INFO] [stdout] | [INFO] [stdout] 8 | pub steps: HashMap> [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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 8 | pub steps: HashMap> [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/lib/step.rs:4:59 [INFO] [stdout] | [INFO] [stdout] 4 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>; [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 4 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)>; [INFO] [stdout] 4 + fn execute(&self, buffer: &Buffer) -> std::io::Result; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/write.rs:18:59 [INFO] [stdout] | [INFO] [stdout] 18 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 18 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 18 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/hash.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/echo.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/steps/reverse.rs:16:59 [INFO] [stdout] | [INFO] [stdout] 16 | fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 16 - fn execute(&self, buffer: &Buffer) -> std::io::Result<(Buffer)> { [INFO] [stdout] 16 + fn execute(&self, buffer: &Buffer) -> std::io::Result { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib/catalog.rs:8:36 [INFO] [stdout] | [INFO] [stdout] 8 | pub steps: HashMap> [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 an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 8 | pub steps: HashMap> [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib/catalog.rs:13:44 [INFO] [stdout] | [INFO] [stdout] 13 | let mut steps: HashMap> = HashMap::new(); [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 13 | let mut steps: HashMap> = HashMap::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stdout] --> src/lib/catalog.rs:13:44 [INFO] [stdout] | [INFO] [stdout] 13 | let mut steps: HashMap> = HashMap::new(); [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] help: if this is an object-safe trait, use `dyn` [INFO] [stdout] | [INFO] [stdout] 13 | let mut steps: HashMap> = HashMap::new(); [INFO] [stdout] | +++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 7.52s [INFO] running `Command { std: "docker" "inspect" "8f4d72da1c2bd63f92690d02bedf969da5254ed5fa6c8200180f02be7c1d9a91", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8f4d72da1c2bd63f92690d02bedf969da5254ed5fa6c8200180f02be7c1d9a91", kill_on_drop: false }` [INFO] [stdout] 8f4d72da1c2bd63f92690d02bedf969da5254ed5fa6c8200180f02be7c1d9a91