[INFO] fetching crate catread 0.2.0...
[INFO] checking catread-0.2.0 against try#b6bca0d7327839b5e3f7a7779947cb9113d08917+rustflags=-Zstrict-projection-item-bounds for 150662-leaf
[INFO] extracting crate catread 0.2.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate catread 0.2.0
[INFO] finished tweaking crates.io crate catread 0.2.0
[INFO] tweaked toml for crates.io crate catread 0.2.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate catread 0.2.0 on toolchain b6bca0d7327839b5e3f7a7779947cb9113d08917
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb69d978610c5ae88712fc13bbfa7b58e2d5bc52e53aff3f6cb6064457c9e5df
[INFO] running `Command { std: "docker" "start" "-a" "cb69d978610c5ae88712fc13bbfa7b58e2d5bc52e53aff3f6cb6064457c9e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb69d978610c5ae88712fc13bbfa7b58e2d5bc52e53aff3f6cb6064457c9e5df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb69d978610c5ae88712fc13bbfa7b58e2d5bc52e53aff3f6cb6064457c9e5df", kill_on_drop: false }`
[INFO] [stdout] cb69d978610c5ae88712fc13bbfa7b58e2d5bc52e53aff3f6cb6064457c9e5df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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 -Zstrict-projection-item-bounds" "-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b6bca0d7327839b5e3f7a7779947cb9113d08917" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbd8a617d96f6d78d90c6a025724c45d13d3d0c2f0514a7703d5eb09e4e36a5a
[INFO] running `Command { std: "docker" "start" "-a" "cbd8a617d96f6d78d90c6a025724c45d13d3d0c2f0514a7703d5eb09e4e36a5a", kill_on_drop: false }`
[INFO] [stderr]     Checking catread v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |     S: Iterator<Item = io::Result<T>>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<S as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> src/lib.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |           let current = source
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 19 | |             .next()
[INFO] [stdout] 20 | |             .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "no sources"))??;
[INFO] [stdout]    | |________________________________________________________________________________^ the `?` operator cannot be applied to type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the nightly-only, unstable trait `Try` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0284]: type annotations needed
[INFO] [stdout]   --> src/lib.rs:11:17
[INFO] [stdout]    |
[INFO] [stdout] 11 |     S: Iterator<Item = io::Result<T>>,
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `<S as Iterator>::Item == _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0277, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stdout] error[E0277]: the `?` operator can only be applied to values that implement `Try`
[INFO] [stdout]   --> src/lib.rs:18:23
[INFO] [stdout]    |
[INFO] [stdout] 18 |           let current = source
[INFO] [stdout]    |  _______________________^
[INFO] [stdout] 19 | |             .next()
[INFO] [stdout] 20 | |             .ok_or_else(|| io::Error::new(io::ErrorKind::Other, "no sources"))??;
[INFO] [stdout]    | |________________________________________________________________________________^ the `?` operator cannot be applied to type `()`
[INFO] [stdout]    |
[INFO] [stdout]    = help: the nightly-only, unstable trait `Try` is not implemented for `()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `catread` (lib test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] Some errors have detailed explanations: E0277, E0284.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `catread` (lib) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "cbd8a617d96f6d78d90c6a025724c45d13d3d0c2f0514a7703d5eb09e4e36a5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd8a617d96f6d78d90c6a025724c45d13d3d0c2f0514a7703d5eb09e4e36a5a", kill_on_drop: false }`
[INFO] [stdout] cbd8a617d96f6d78d90c6a025724c45d13d3d0c2f0514a7703d5eb09e4e36a5a