[INFO] cloning repository https://github.com/david-d-h/tuppipe
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/david-d-h/tuppipe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-d-h%2Ftuppipe", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-d-h%2Ftuppipe'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a55e662871339ed7e6896b1d72555c9a2bae1eb0
[INFO] checking david-d-h/tuppipe against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavid-d-h%2Ftuppipe" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/david-d-h/tuppipe
[INFO] finished tweaking git repo https://github.com/david-d-h/tuppipe
[INFO] tweaked toml for git repo https://github.com/david-d-h/tuppipe written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/david-d-h/tuppipe on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/david-d-h/tuppipe 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ghost v0.1.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 74f63a4749bd662ba7e1f35dee4949ab81d3378928b7c7cb55b28146ce34eac5
[INFO] running `Command { std: "docker" "start" "-a" "74f63a4749bd662ba7e1f35dee4949ab81d3378928b7c7cb55b28146ce34eac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74f63a4749bd662ba7e1f35dee4949ab81d3378928b7c7cb55b28146ce34eac5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74f63a4749bd662ba7e1f35dee4949ab81d3378928b7c7cb55b28146ce34eac5", kill_on_drop: false }`
[INFO] [stdout] 74f63a4749bd662ba7e1f35dee4949ab81d3378928b7c7cb55b28146ce34eac5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51c9786c1ae690556127ccb58fa49d24ced0c08425d92528d72a66a659f16d76
[INFO] running `Command { std: "docker" "start" "-a" "51c9786c1ae690556127ccb58fa49d24ced0c08425d92528d72a66a659f16d76", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.88
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling syn v2.0.79
[INFO] [stderr]    Compiling ghost v0.1.17
[INFO] [stderr]     Checking tuppipe v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout]  2 | / #![feature(
[INFO] [stdout]  3 | |     fn_traits,
[INFO] [stdout]  4 | |     macro_metavar_expr,
[INFO] [stdout]  5 | |     decl_macro,
[INFO] [stdout] ...  |
[INFO] [stdout]  9 | |     negative_impls
[INFO] [stdout] 10 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:2:1
[INFO] [stdout]    |
[INFO] [stdout]  2 | / #![feature(
[INFO] [stdout]  3 | |     fn_traits,
[INFO] [stdout]  4 | |     macro_metavar_expr,
[INFO] [stdout]  5 | |     decl_macro,
[INFO] [stdout] ...  |
[INFO] [stdout]  9 | |     negative_impls
[INFO] [stdout] 10 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `tuppipe` (lib test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `tuppipe` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "51c9786c1ae690556127ccb58fa49d24ced0c08425d92528d72a66a659f16d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51c9786c1ae690556127ccb58fa49d24ced0c08425d92528d72a66a659f16d76", kill_on_drop: false }`
[INFO] [stdout] 51c9786c1ae690556127ccb58fa49d24ced0c08425d92528d72a66a659f16d76
