[INFO] cloning repository https://github.com/rakivo/robuild
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rakivo/robuild" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakivo%2Frobuild", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakivo%2Frobuild'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce87b322e4fc040f3c88b27cbba6fe59b02eecf6
[INFO] checking rakivo/robuild against master#cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c for pr-143170
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frakivo%2Frobuild" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rakivo/robuild
[INFO] finished tweaking git repo https://github.com/rakivo/robuild
[INFO] tweaked toml for git repo https://github.com/rakivo/robuild written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rakivo/robuild on toolchain cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "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" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 22649ed5a68c927ead4bd1f05b84efd0bfac89d06a1424db7df289a52e56f2b1
[INFO] running `Command { std: "docker" "start" "-a" "22649ed5a68c927ead4bd1f05b84efd0bfac89d06a1424db7df289a52e56f2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "22649ed5a68c927ead4bd1f05b84efd0bfac89d06a1424db7df289a52e56f2b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22649ed5a68c927ead4bd1f05b84efd0bfac89d06a1424db7df289a52e56f2b1", kill_on_drop: false }`
[INFO] [stdout] 22649ed5a68c927ead4bd1f05b84efd0bfac89d06a1424db7df289a52e56f2b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+cf38b8e663f15db10ce49d7bbce02c99fc3dbc0c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 02734b8689c892cd098b56683e506cf74f0e0061e4f269876e45575b8a7d6050
[INFO] running `Command { std: "docker" "start" "-a" "02734b8689c892cd098b56683e506cf74f0e0061e4f269876e45575b8a7d6050", kill_on_drop: false }`
[INFO] [stderr]     Checking robuild v0.0.33 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `?` couldn't convert the error to `std::io::Error`
[INFO] [stdout]   --> examples/main.rs:69:30
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn main() -> IoResult::<()> {
[INFO] [stdout]    |              -------------- expected `std::io::Error` because of this
[INFO] [stdout] ...
[INFO] [stdout] 69 |         .execute_jobs_async()?;
[INFO] [stdout]    |          --------------------^ the trait `From<RobError>` is not implemented for `std::io::Error`
[INFO] [stdout]    |          |
[INFO] [stdout]    |          this can't be annotated with `?` because it has type `Result<_, RobError>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: the question mark operation (`?`) implicitly performs a conversion on the error value using the `From` trait
[INFO] [stdout]    = help: the following other types implement trait `From<T>`:
[INFO] [stdout]              `std::io::Error` implements `From<ErrorKind>`
[INFO] [stdout]              `std::io::Error` implements `From<IntoInnerError<W>>`
[INFO] [stdout]              `std::io::Error` implements `From<NulError>`
[INFO] [stdout]              `std::io::Error` implements `From<TryReserveError>`
[INFO] [stdout]              `std::io::Error` implements `From<std::fs::TryLockError>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `robuild` (example "main") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "02734b8689c892cd098b56683e506cf74f0e0061e4f269876e45575b8a7d6050", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02734b8689c892cd098b56683e506cf74f0e0061e4f269876e45575b8a7d6050", kill_on_drop: false }`
[INFO] [stdout] 02734b8689c892cd098b56683e506cf74f0e0061e4f269876e45575b8a7d6050