[INFO] fetching crate ross 0.1.7... [INFO] checking ross-0.1.7 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback [INFO] extracting crate ross 0.1.7 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate ross 0.1.7 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate ross 0.1.7 [INFO] finished tweaking crates.io crate ross 0.1.7 [INFO] tweaked toml for crates.io crate ross 0.1.7 written to /workspace/builds/worker-7-tc1/source/Cargo.toml [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Updating crates.io index [INFO] [stderr] Locking 44 packages [INFO] [stderr] Adding aho-corasick v0.6.10 (latest: v1.1.3) [INFO] [stderr] Adding crossbeam v0.2.12 (latest: v0.8.4) [INFO] [stderr] Adding futures v0.1.31 (latest: v0.3.30) [INFO] [stderr] Adding num v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding num-bigint v0.1.44 (latest: v0.4.4) [INFO] [stderr] Adding num-complex v0.1.43 (latest: v0.4.5) [INFO] [stderr] Adding num-rational v0.1.42 (latest: v0.4.1) [INFO] [stderr] Adding owning_ref v0.2.4 (latest: v0.4.1) [INFO] [stderr] Adding parking_lot v0.3.8 (latest: v0.12.1) [INFO] [stderr] Adding parking_lot_core v0.2.14 (latest: v0.9.9) [INFO] [stderr] Adding rand v0.3.23 (latest: v0.8.5) [INFO] [stderr] Adding rand v0.4.6 (latest: v0.8.5) [INFO] [stderr] Adding rand_core v0.3.1 (latest: v0.6.4) [INFO] [stderr] Adding rand_core v0.4.2 (latest: v0.6.4) [INFO] [stderr] Adding rdrand v0.4.0 (latest: v0.8.3) [INFO] [stderr] Adding redox_syscall v0.1.57 (latest: v0.5.1) [INFO] [stderr] Adding regex v0.2.11 (latest: v1.10.4) [INFO] [stderr] Adding regex-syntax v0.5.6 (latest: v0.8.3) [INFO] [stderr] Adding smallvec v0.3.4 (latest: v1.13.2) [INFO] [stderr] Adding smallvec v0.6.14 (latest: v1.13.2) [INFO] [stderr] Adding statistical v0.1.1 (latest: v1.0.0) [INFO] [stderr] Adding thread-id v3.3.0 (latest: v4.2.1) [INFO] [stderr] Adding thread_local v0.3.6 (latest: v1.1.8) [INFO] [stderr] Adding time v0.1.45 (latest: v0.3.34) [INFO] [stderr] Adding ucd-util v0.1.10 (latest: v0.2.1) [INFO] [stderr] Adding wasi v0.10.0+wasi-snapshot-preview1 (latest: v0.13.0+wasi-0.2.0) [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded statistical v0.1.1 [INFO] [stderr] Downloaded multiqueue v0.3.2 [INFO] [stderr] Downloaded owning_ref v0.2.4 [INFO] [stderr] Downloaded smallvec v0.3.4 [INFO] [stderr] Downloaded parking_lot v0.3.8 [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 406b9630656e3a171684ed2976ea68a3fce7d13b34743a12bace17cd285a83cc [INFO] running `Command { std: "docker" "start" "-a" "406b9630656e3a171684ed2976ea68a3fce7d13b34743a12bace17cd285a83cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "406b9630656e3a171684ed2976ea68a3fce7d13b34743a12bace17cd285a83cc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "406b9630656e3a171684ed2976ea68a3fce7d13b34743a12bace17cd285a83cc", kill_on_drop: false }` [INFO] [stdout] 406b9630656e3a171684ed2976ea68a3fce7d13b34743a12bace17cd285a83cc [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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b62f999810a765543239c74382b88c1eec94fef71f929b05eb97315b0292dfab [INFO] running `Command { std: "docker" "start" "-a" "b62f999810a765543239c74382b88c1eec94fef71f929b05eb97315b0292dfab", kill_on_drop: false }` [INFO] [stderr] Compiling maybe-uninit v2.0.0 [INFO] [stderr] Checking ucd-util v0.1.10 [INFO] [stderr] Checking owning_ref v0.2.4 [INFO] [stderr] Compiling regex v0.2.11 [INFO] [stderr] Checking crossbeam v0.2.12 [INFO] [stderr] Checking futures v0.1.31 [INFO] [stderr] Checking utf8-ranges v1.0.5 [INFO] [stderr] Checking smallvec v0.3.4 [INFO] [stderr] Checking thread-id v3.3.0 [INFO] [stderr] Checking aho-corasick v0.6.10 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking getopts v0.2.21 [INFO] [stderr] Checking statistical v0.1.1 [INFO] [stderr] Checking regex-syntax v0.5.6 [INFO] [stderr] Checking smallvec v0.6.14 [INFO] [stderr] Checking parking_lot_core v0.2.14 [INFO] [stderr] Checking parking_lot v0.3.8 [INFO] [stderr] Checking multiqueue v0.3.2 [INFO] [stderr] Checking ross v0.1.7 (/opt/rustwide/workdir) [INFO] [stdout] warning: the item `Clone` is imported redundantly [INFO] [stdout] --> src/io/seq.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::clone::Clone; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Clone` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the item `Clone` is imported redundantly [INFO] [stdout] --> src/io/seq.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::clone::Clone; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] --> /rustc/ceab6128fa48a616bfd3e3adf4bc80133b8ee223/library/std/src/prelude/mod.rs:124:13 [INFO] [stdout] | [INFO] [stdout] = note: the item `Clone` is already defined here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/io/seq.rs:49:36 [INFO] [stdout] | [INFO] [stdout] 49 | fn sanitize_id(id: &String) -> (String); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 49 - fn sanitize_id(id: &String) -> (String); [INFO] [stdout] 49 + fn sanitize_id(id: &String) -> String; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/io/seq.rs:116:36 [INFO] [stdout] | [INFO] [stdout] 116 | fn sanitize_id(id: &String) -> (String) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 116 - fn sanitize_id(id: &String) -> (String) { [INFO] [stdout] 116 + fn sanitize_id(id: &String) -> String { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/io/seq.rs:49:36 [INFO] [stdout] | [INFO] [stdout] 49 | fn sanitize_id(id: &String) -> (String); [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_parens)]` on by default [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 49 - fn sanitize_id(id: &String) -> (String); [INFO] [stdout] 49 + fn sanitize_id(id: &String) -> String; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary parentheses around type [INFO] [stdout] --> src/io/seq.rs:116:36 [INFO] [stdout] | [INFO] [stdout] 116 | fn sanitize_id(id: &String) -> (String) { [INFO] [stdout] | ^ ^ [INFO] [stdout] | [INFO] [stdout] help: remove these parentheses [INFO] [stdout] | [INFO] [stdout] 116 - fn sanitize_id(id: &String) -> (String) { [INFO] [stdout] 116 + fn sanitize_id(id: &String) -> String { [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.95s [INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42 [INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1` [INFO] running `Command { std: "docker" "inspect" "b62f999810a765543239c74382b88c1eec94fef71f929b05eb97315b0292dfab", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b62f999810a765543239c74382b88c1eec94fef71f929b05eb97315b0292dfab", kill_on_drop: false }` [INFO] [stdout] b62f999810a765543239c74382b88c1eec94fef71f929b05eb97315b0292dfab