[INFO] fetching crate rustc-hex 2.1.0... [INFO] checking rustc-hex-2.1.0 against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] extracting crate rustc-hex 2.1.0 into /workspace/builds/worker-7-tc1/source [INFO] validating manifest of crates.io crate rustc-hex 2.1.0 on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking crates.io crate rustc-hex 2.1.0 [INFO] finished tweaking crates.io crate rustc-hex 2.1.0 [INFO] tweaked toml for crates.io crate rustc-hex 2.1.0 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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fdfb2b407155033c5f6fe38a6f9284fb6009e457ccef115451dc4e092c663ce2 [INFO] running `Command { std: "docker" "start" "-a" "fdfb2b407155033c5f6fe38a6f9284fb6009e457ccef115451dc4e092c663ce2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fdfb2b407155033c5f6fe38a6f9284fb6009e457ccef115451dc4e092c663ce2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fdfb2b407155033c5f6fe38a6f9284fb6009e457ccef115451dc4e092c663ce2", kill_on_drop: false }` [INFO] [stdout] fdfb2b407155033c5f6fe38a6f9284fb6009e457ccef115451dc4e092c663ce2 [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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4f2104c36873a5ea438985d75f3f9d140b6514796175f79e14d0a4c224ef8ac5 [INFO] running `Command { std: "docker" "start" "-a" "4f2104c36873a5ea438985d75f3f9d140b6514796175f79e14d0a4c224ef8ac5", kill_on_drop: false }` [INFO] [stderr] Checking rustc-hex v2.1.0 (/opt/rustwide/workdir) [INFO] [stdout] error[E0283]: type annotations needed [INFO] [stdout] --> benches/hex.rs:14:22 [INFO] [stdout] | [INFO] [stdout] 14 | s.as_bytes().to_hex(); [INFO] [stdout] | ^^^^^^ cannot infer type of the type parameter `T` declared on the method `to_hex` [INFO] [stdout] | [INFO] [stdout] = note: multiple `impl`s satisfying `_: FromIterator` found in the `alloc` crate: [INFO] [stdout] - impl FromIterator for Box; [INFO] [stdout] - impl FromIterator for String; [INFO] [stdout] note: required by a bound in `to_hex` [INFO] [stdout] --> /opt/rustwide/workdir/src/lib.rs:25:18 [INFO] [stdout] | [INFO] [stdout] 25 | fn to_hex>(&self) -> T; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^ required by this bound in `ToHex::to_hex` [INFO] [stdout] help: consider specifying the generic argument [INFO] [stdout] | [INFO] [stdout] 14 | s.as_bytes().to_hex::(); [INFO] [stdout] | +++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0282]: type annotations needed [INFO] [stdout] --> benches/hex.rs:23:9 [INFO] [stdout] | [INFO] [stdout] 23 | let sb = s.as_bytes().to_hex(); [INFO] [stdout] | ^^ [INFO] [stdout] 24 | b.iter(|| { [INFO] [stdout] 25 | sb.from_hex().unwrap(); [INFO] [stdout] | -- type must be known at this point [INFO] [stdout] | [INFO] [stdout] help: consider giving `sb` an explicit type [INFO] [stdout] | [INFO] [stdout] 23 | let sb: /* Type */ = s.as_bytes().to_hex(); [INFO] [stdout] | ++++++++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `FromHex` [INFO] [stdout] --> benches/hex.rs:7:11 [INFO] [stdout] | [INFO] [stdout] 7 | use hex::{FromHex, ToHex}; [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] Some errors have detailed explanations: E0282, E0283. [INFO] [stdout] [INFO] [stdout] For more information about an error, try `rustc --explain E0282`. [INFO] [stdout] [INFO] [stderr] error: could not compile `rustc-hex` (bench "hex") due to 3 previous errors; 1 warning emitted [INFO] running `Command { std: "docker" "inspect" "4f2104c36873a5ea438985d75f3f9d140b6514796175f79e14d0a4c224ef8ac5", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4f2104c36873a5ea438985d75f3f9d140b6514796175f79e14d0a4c224ef8ac5", kill_on_drop: false }` [INFO] [stdout] 4f2104c36873a5ea438985d75f3f9d140b6514796175f79e14d0a4c224ef8ac5