[INFO] fetching crate rustc-hex 2.1.0...
[INFO] checking rustc-hex-2.1.0 against master#e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682 for beta-170-4
[INFO] extracting crate rustc-hex 2.1.0 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate rustc-hex 2.1.0 on toolchain e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "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-1-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9e4a9a5405b8d423fa320a41aee5e57508d4a760915563bb6a4abe4d1ca2404e
[INFO] running `Command { std: "docker" "start" "-a" "9e4a9a5405b8d423fa320a41aee5e57508d4a760915563bb6a4abe4d1ca2404e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e4a9a5405b8d423fa320a41aee5e57508d4a760915563bb6a4abe4d1ca2404e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e4a9a5405b8d423fa320a41aee5e57508d4a760915563bb6a4abe4d1ca2404e", kill_on_drop: false }`
[INFO] [stdout] 9e4a9a5405b8d423fa320a41aee5e57508d4a760915563bb6a4abe4d1ca2404e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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@sha256:19e73879b68f455e41552ea35293514db52ea292d993f571636dbffedb77a1ee" "/opt/rustwide/cargo-home/bin/cargo" "+e6e4f7ed1589e03bc2f6c5931c1a72e7947e8682" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d67ee80a476299c8fbcd4961efb0764a188bb808afffc6412b9b8e92be65d31
[INFO] running `Command { std: "docker" "start" "-a" "1d67ee80a476299c8fbcd4961efb0764a188bb808afffc6412b9b8e92be65d31", 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: cannot satisfy `_: FromIterator<char>`
[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<T: FromIterator<char>>(&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::<T>();
[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" "1d67ee80a476299c8fbcd4961efb0764a188bb808afffc6412b9b8e92be65d31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d67ee80a476299c8fbcd4961efb0764a188bb808afffc6412b9b8e92be65d31", kill_on_drop: false }`
[INFO] [stdout] 1d67ee80a476299c8fbcd4961efb0764a188bb808afffc6412b9b8e92be65d31
