[INFO] fetching crate testing 0.10.1...
[INFO] testing testing-0.10.1 against 1.47.0 for beta-1.48-1
[INFO] extracting crate testing 0.10.1 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate testing 0.10.1 on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate testing 0.10.1
[INFO] finished tweaking crates.io crate testing 0.10.1
[INFO] tweaked toml for crates.io crate testing 0.10.1 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded swc_macros_common v0.3.1
[INFO] [stderr]   Downloaded from_variant v0.1.2
[INFO] [stderr]   Downloaded ast_node v0.7.0
[INFO] [stderr]   Downloaded swc_visit_macros v0.2.0
[INFO] [stderr]   Downloaded pmutil v0.5.3
[INFO] [stderr]   Downloaded swc_common v0.10.4
[INFO] [stderr]   Downloaded swc_visit v0.2.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6da2a080a0375c474ac8daca5344aa6fbe8b8a1bb8dfa64fd9faa96049a36018
[INFO] running `Command { std: "docker" "start" "-a" "6da2a080a0375c474ac8daca5344aa6fbe8b8a1bb8dfa64fd9faa96049a36018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6da2a080a0375c474ac8daca5344aa6fbe8b8a1bb8dfa64fd9faa96049a36018", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da2a080a0375c474ac8daca5344aa6fbe8b8a1bb8dfa64fd9faa96049a36018", kill_on_drop: false }`
[INFO] [stdout] 6da2a080a0375c474ac8daca5344aa6fbe8b8a1bb8dfa64fd9faa96049a36018
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ab486785c396096b97ddf6bb7ee8ffcf77a4e972ad6e5cc82c49f371cc10863
[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" "1ab486785c396096b97ddf6bb7ee8ffcf77a4e972ad6e5cc82c49f371cc10863", kill_on_drop: false }`
[INFO] [stderr]    Compiling pmutil v0.5.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling Inflector v0.11.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling swc_macros_common v0.3.1
[INFO] [stderr]    Compiling swc_visit_macros v0.2.0
[INFO] [stderr]    Compiling from_variant v0.1.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling ast_node v0.7.0
[INFO] [stderr]    Compiling swc_visit v0.2.0
[INFO] [stderr]    Compiling swc_common v0.10.4
[INFO] [stderr]    Compiling testing v0.10.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `testing`.
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[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] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "1ab486785c396096b97ddf6bb7ee8ffcf77a4e972ad6e5cc82c49f371cc10863", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ab486785c396096b97ddf6bb7ee8ffcf77a4e972ad6e5cc82c49f371cc10863", kill_on_drop: false }`
[INFO] [stdout] 1ab486785c396096b97ddf6bb7ee8ffcf77a4e972ad6e5cc82c49f371cc10863
