[INFO] fetching crate pi_cg2d 0.3.0...
[INFO] checking pi_cg2d-0.3.0 against 1.95.0 for pr-155915
[INFO] extracting crate pi_cg2d 0.3.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate pi_cg2d 0.3.0
[INFO] finished tweaking crates.io crate pi_cg2d 0.3.0
[INFO] tweaked toml for crates.io crate pi_cg2d 0.3.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate pi_cg2d 0.3.0 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] 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 55 packages to latest compatible versions
[INFO] [stderr]       Adding parry2d v0.13.8 (available: v0.26.0)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pi_heap v0.1.0
[INFO] [stderr]   Downloaded pi_slab v0.1.0
[INFO] [stderr]   Downloaded pi_hash v0.1.1
[INFO] [stderr]   Downloaded pi_dyn_uint v0.1.0
[INFO] [stderr]   Downloaded pi_triangulation v0.1.0
[INFO] [stderr]   Downloaded parry2d v0.13.8
[INFO] [stderr]   Downloaded robust v1.2.0
[INFO] [stderr]   Downloaded spade v2.15.1
[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] 73231be2aa4d6ea2f38379cddb373d8ce639c5dbe7234cb9fe3c300c05e81fc5
[INFO] running `Command { std: "docker" "start" "-a" "73231be2aa4d6ea2f38379cddb373d8ce639c5dbe7234cb9fe3c300c05e81fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73231be2aa4d6ea2f38379cddb373d8ce639c5dbe7234cb9fe3c300c05e81fc5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73231be2aa4d6ea2f38379cddb373d8ce639c5dbe7234cb9fe3c300c05e81fc5", kill_on_drop: false }`
[INFO] [stdout] 73231be2aa4d6ea2f38379cddb373d8ce639c5dbe7234cb9fe3c300c05e81fc5
[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=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] 70ea55d59e041119fc34b178832f629b8e354219071032b7c22beb7d275e68d4
[INFO] running `Command { std: "docker" "start" "-a" "70ea55d59e041119fc34b178832f629b8e354219071032b7c22beb7d275e68d4", kill_on_drop: false }`
[INFO] [stderr]     Checking pi_slab v0.1.0
[INFO] [stderr]     Checking robust v1.2.0
[INFO] [stderr]     Checking downcast-rs v1.2.1
[INFO] [stderr]     Checking getrandom v0.2.17
[INFO] [stderr]     Checking num-integer v0.1.46
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking pi_triangulation v0.1.0
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]     Checking simba v0.8.1
[INFO] [stderr]     Checking num-rational v0.4.2
[INFO] [stderr]     Checking pi_dyn_uint v0.1.0
[INFO] [stderr]     Checking pi_heap v0.1.0
[INFO] [stderr]     Checking spade v2.15.1
[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/pi_heap-0.1.0/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(nll)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `nll` has been stable since `1.63.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `pi_heap` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "70ea55d59e041119fc34b178832f629b8e354219071032b7c22beb7d275e68d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ea55d59e041119fc34b178832f629b8e354219071032b7c22beb7d275e68d4", kill_on_drop: false }`
[INFO] [stdout] 70ea55d59e041119fc34b178832f629b8e354219071032b7c22beb7d275e68d4
