[INFO] cloning repository https://github.com/jaswish/rust-mpi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jaswish/rust-mpi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaswish%2Frust-mpi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaswish%2Frust-mpi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 10003a3c454fb41d01cc032a7fd5ca6d15f725e0
[INFO] checking jaswish/rust-mpi against try#9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869 for pr-129249
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjaswish%2Frust-mpi" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jaswish/rust-mpi on toolchain 9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jaswish/rust-mpi
[INFO] finished tweaking git repo https://github.com/jaswish/rust-mpi
[INFO] tweaked toml for git repo https://github.com/jaswish/rust-mpi written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/jaswish/rust-mpi already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61d624afbca1604f4e16e0adbbb53c6b6826e43bc6d0d9b04bc960b1e8e215f2
[INFO] running `Command { std: "docker" "start" "-a" "61d624afbca1604f4e16e0adbbb53c6b6826e43bc6d0d9b04bc960b1e8e215f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61d624afbca1604f4e16e0adbbb53c6b6826e43bc6d0d9b04bc960b1e8e215f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61d624afbca1604f4e16e0adbbb53c6b6826e43bc6d0d9b04bc960b1e8e215f2", kill_on_drop: false }`
[INFO] [stdout] 61d624afbca1604f4e16e0adbbb53c6b6826e43bc6d0d9b04bc960b1e8e215f2
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+9543f8ea2aae74b8f13ac2a6e6c0ecdca9810869" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dab46ecab4f438a230a20870c57d8b1c4303ecce682172e614396d3c398a0dfe
[INFO] running `Command { std: "docker" "start" "-a" "dab46ecab4f438a230a20870c57d8b1c4303ecce682172e614396d3c398a0dfe", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-mpi v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: this conversion is useless `String` to `String`
[INFO] [stdout]   --> src/main.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let builder = thread::Builder::new().name(thread_name.into());
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `String` to `String`
[INFO] [stdout]    --> src/main.rs:257:55
[INFO] [stdout]     |
[INFO] [stdout] 257 |             let builder = thread::Builder::new().name(thread_name.into());
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-mpi` (bin "rust-mpi") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this conversion is useless `String` to `String`
[INFO] [stdout]   --> src/main.rs:64:55
[INFO] [stdout]    |
[INFO] [stdout] 64 |             let builder = thread::Builder::new().name(thread_name.into());
[INFO] [stdout]    |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this conversion is useless `String` to `String`
[INFO] [stdout]    --> src/main.rs:257:55
[INFO] [stdout]     |
[INFO] [stdout] 257 |             let builder = thread::Builder::new().name(thread_name.into());
[INFO] [stdout]     |                                                       ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-mpi` (bin "rust-mpi" test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "dab46ecab4f438a230a20870c57d8b1c4303ecce682172e614396d3c398a0dfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dab46ecab4f438a230a20870c57d8b1c4303ecce682172e614396d3c398a0dfe", kill_on_drop: false }`
[INFO] [stdout] dab46ecab4f438a230a20870c57d8b1c4303ecce682172e614396d3c398a0dfe