[INFO] fetching crate smonitor 0.1.0...
[INFO] testing smonitor-0.1.0 against 1.95.0 for beta-1.96-2
[INFO] extracting crate smonitor 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate smonitor 0.1.0
[INFO] finished tweaking crates.io crate smonitor 0.1.0
[INFO] tweaked toml for crates.io crate smonitor 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate smonitor 0.1.0 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 crates.io crate smonitor 0.1.0 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]  Downloading crates ...
[INFO] [stderr]   Downloaded serde v1.0.188
[INFO] [stderr]   Downloaded serde_derive v1.0.188
[INFO] [stderr]   Downloaded serde_json v1.0.107
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 707dcc04201ede68e0fc6a40923c16e24e67213d9fc2364e0b605a91b9b9a880
[INFO] running `Command { std: "docker" "start" "-a" "707dcc04201ede68e0fc6a40923c16e24e67213d9fc2364e0b605a91b9b9a880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "707dcc04201ede68e0fc6a40923c16e24e67213d9fc2364e0b605a91b9b9a880", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "707dcc04201ede68e0fc6a40923c16e24e67213d9fc2364e0b605a91b9b9a880", kill_on_drop: false }`
[INFO] [stdout] 707dcc04201ede68e0fc6a40923c16e24e67213d9fc2364e0b605a91b9b9a880
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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=warn" "-e" "RUSTDOCFLAGS=--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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dedf7074a5b782fc26d9d6a561fbb0400b4ef6937bf2b86141d2494d4fca72ee
[INFO] running `Command { std: "docker" "start" "-a" "dedf7074a5b782fc26d9d6a561fbb0400b4ef6937bf2b86141d2494d4fca72ee", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde v1.0.188
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling ryu v1.0.15
[INFO] [stderr]    Compiling itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.188
[INFO] [stderr]    Compiling smonitor v0.1.0 (/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(lazy_cell)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `lazy_cell` has been stable since 1.80.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(lazy_cell)]
[INFO] [stdout]   |            ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `smonitor` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "dedf7074a5b782fc26d9d6a561fbb0400b4ef6937bf2b86141d2494d4fca72ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dedf7074a5b782fc26d9d6a561fbb0400b4ef6937bf2b86141d2494d4fca72ee", kill_on_drop: false }`
[INFO] [stdout] dedf7074a5b782fc26d9d6a561fbb0400b4ef6937bf2b86141d2494d4fca72ee
