[INFO] cloning repository https://github.com/wh317706/rust_cp_snippets
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wh317706/rust_cp_snippets" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwh317706%2Frust_cp_snippets", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwh317706%2Frust_cp_snippets'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3a98570c9cba5b9f33dfdc88afdfe1ec2e9abd54
[INFO] testing wh317706/rust_cp_snippets against beta-2021-08-01 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwh317706%2Frust_cp_snippets" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wh317706/rust_cp_snippets on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wh317706/rust_cp_snippets
[INFO] finished tweaking git repo https://github.com/wh317706/rust_cp_snippets
[INFO] tweaked toml for git repo https://github.com/wh317706/rust_cp_snippets written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/wh317706/rust_cp_snippets already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo-snippet v0.6.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c8ea2285c62763988ee265ee5f74b8f5f97a0c03dc35226374f606008ce9699f
[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" "c8ea2285c62763988ee265ee5f74b8f5f97a0c03dc35226374f606008ce9699f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c8ea2285c62763988ee265ee5f74b8f5f97a0c03dc35226374f606008ce9699f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8ea2285c62763988ee265ee5f74b8f5f97a0c03dc35226374f606008ce9699f", kill_on_drop: false }`
[INFO] [stdout] c8ea2285c62763988ee265ee5f74b8f5f97a0c03dc35226374f606008ce9699f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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=warn" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d756318f3e8c0f11038f43e31749e19b7f5953ac6f8c459ea4e887d354ce6222
[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" "d756318f3e8c0f11038f43e31749e19b7f5953ac6f8c459ea4e887d354ce6222", kill_on_drop: false }`
[INFO] [stderr]    Compiling cargo-snippet v0.6.1
[INFO] [stderr]    Compiling rust_cp_snippets v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(plugin)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/util.rs:141:1
[INFO] [stdout]     |
[INFO] [stdout] 141 | / /// let global = get_rc_mut();
[INFO] [stdout] 142 | | /// global.borrow_mut().push(1);
[INFO] [stdout] 143 | | /// let x = global.borrow()[0];
[INFO] [stdout]     | |_------------------------------^
[INFO] [stdout]     |   |
[INFO] [stdout]     |   rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_doc_comments)]` on by default
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_cp_snippets` due to 3 previous errors; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "d756318f3e8c0f11038f43e31749e19b7f5953ac6f8c459ea4e887d354ce6222", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d756318f3e8c0f11038f43e31749e19b7f5953ac6f8c459ea4e887d354ce6222", kill_on_drop: false }`
[INFO] [stdout] d756318f3e8c0f11038f43e31749e19b7f5953ac6f8c459ea4e887d354ce6222
