[INFO] cloning repository https://github.com/rfwatson/rust-stream-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rfwatson/rust-stream-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfwatson%2Frust-stream-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfwatson%2Frust-stream-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2059457a56a4742f1255a0c804396debc7343ac7
[INFO] checking rfwatson/rust-stream-example against master#0d37dca25a51fb900a402c94c8818ad1c2789e30 for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frfwatson%2Frust-stream-example" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rfwatson/rust-stream-example on toolchain 0d37dca25a51fb900a402c94c8818ad1c2789e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rfwatson/rust-stream-example
[INFO] finished tweaking git repo https://github.com/rfwatson/rust-stream-example
[INFO] tweaked toml for git repo https://github.com/rfwatson/rust-stream-example written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/rfwatson/rust-stream-example already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f931096708dfd16f2f092d3a5cf85a542425b59bdb6b3c2ce3252d65ac046407
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f931096708dfd16f2f092d3a5cf85a542425b59bdb6b3c2ce3252d65ac046407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f931096708dfd16f2f092d3a5cf85a542425b59bdb6b3c2ce3252d65ac046407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f931096708dfd16f2f092d3a5cf85a542425b59bdb6b3c2ce3252d65ac046407", kill_on_drop: false }`
[INFO] [stdout] f931096708dfd16f2f092d3a5cf85a542425b59bdb6b3c2ce3252d65ac046407
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+0d37dca25a51fb900a402c94c8818ad1c2789e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8851174d34b6ae216b61de5b12b7077b4718b2e6286f0b56aa6cdecb7ead65c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f8851174d34b6ae216b61de5b12b7077b4718b2e6286f0b56aa6cdecb7ead65c", kill_on_drop: false }`
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-channel v0.3.5
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking stream-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     type Item = &[f32];
[INFO] [stdout]    |                 ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] 36 |     type Item<'a> = &'a [f32];
[INFO] [stdout]    |              ^^^^   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0106]: missing lifetime specifier
[INFO] [stdout]   --> src/main.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     type Item = &[f32];
[INFO] [stdout]    |                 ^ expected named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] help: consider introducing a named lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] 36 |     type Item<'a> = &'a [f32];
[INFO] [stdout]    |              ^^^^   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:57:30
[INFO] [stdout]    |
[INFO] [stdout] 57 |             Poll::Ready(Some(result))
[INFO] [stdout]    |                              ^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              expected `&[f32]`, found struct `Vec`
[INFO] [stdout]    |                              help: consider borrowing here: `&result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&[f32]`
[INFO] [stdout]                  found struct `Vec<{float}>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `stream-example`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:57:30
[INFO] [stdout]    |
[INFO] [stdout] 57 |             Poll::Ready(Some(result))
[INFO] [stdout]    |                              ^^^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              expected `&[f32]`, found struct `Vec`
[INFO] [stdout]    |                              help: consider borrowing here: `&result`
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected reference `&[f32]`
[INFO] [stdout]                  found struct `Vec<{float}>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0106, E0308.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0106`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f8851174d34b6ae216b61de5b12b7077b4718b2e6286f0b56aa6cdecb7ead65c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8851174d34b6ae216b61de5b12b7077b4718b2e6286f0b56aa6cdecb7ead65c", kill_on_drop: false }`
[INFO] [stdout] f8851174d34b6ae216b61de5b12b7077b4718b2e6286f0b56aa6cdecb7ead65c