[INFO] fetching crate rebound 0.4.4...
[INFO] checking rebound-0.4.4 against 1.95.0 for pr-155915
[INFO] extracting crate rebound 0.4.4 into /workspace/builds/worker-0-tc1/source
[INFO] started tweaking crates.io crate rebound 0.4.4
[INFO] finished tweaking crates.io crate rebound 0.4.4
[INFO] tweaked toml for crates.io crate rebound 0.4.4 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate rebound 0.4.4 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 40 packages to latest compatible versions
[INFO] [stderr]       Adding hashbrown v0.12.3 (available: v0.17.1)
[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 craft-eraser v0.3.3
[INFO] [stderr]   Downloaded rebound-proc v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 23b54665c9c8f2f6005a2df0c529f3f52d39f53c11ce605871d98ec8808fe68f
[INFO] running `Command { std: "docker" "start" "-a" "23b54665c9c8f2f6005a2df0c529f3f52d39f53c11ce605871d98ec8808fe68f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "23b54665c9c8f2f6005a2df0c529f3f52d39f53c11ce605871d98ec8808fe68f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "23b54665c9c8f2f6005a2df0c529f3f52d39f53c11ce605871d98ec8808fe68f", kill_on_drop: false }`
[INFO] [stdout] 23b54665c9c8f2f6005a2df0c529f3f52d39f53c11ce605871d98ec8808fe68f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f2e714a9eda3e443f6b34ed4ef9d457f825c74f2d0848efbb39096ca11b01c91
[INFO] running `Command { std: "docker" "start" "-a" "f2e714a9eda3e443f6b34ed4ef9d457f825c74f2d0848efbb39096ca11b01c91", kill_on_drop: false }`
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]    Compiling target-triple v1.0.0
[INFO] [stderr]     Checking toml_datetime v1.1.1+spec-1.1.0
[INFO] [stderr]     Checking serde v1.0.228
[INFO] [stderr]    Compiling impl-trait-for-tuples v0.2.3
[INFO] [stderr]    Compiling rebound-proc v0.4.0
[INFO] [stderr]     Checking craft-eraser v0.3.3
[INFO] [stderr]     Checking glob v0.3.3
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/craft-eraser-0.3.3/src/lib.rs:17:1
[INFO] [stdout]    |
[INFO] [stdout] 17 | #![feature(ptr_metadata)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `craft-eraser` (lib) due to 1 previous error
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rebound-proc-0.4.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_diagnostic, const_btree_new)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rebound-proc` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f2e714a9eda3e443f6b34ed4ef9d457f825c74f2d0848efbb39096ca11b01c91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e714a9eda3e443f6b34ed4ef9d457f825c74f2d0848efbb39096ca11b01c91", kill_on_drop: false }`
[INFO] [stdout] f2e714a9eda3e443f6b34ed4ef9d457f825c74f2d0848efbb39096ca11b01c91