[INFO] fetching crate zeropool-bn 0.5.9...
[INFO] checking zeropool-bn-0.5.9 against 1.55.0 for beta-1.56-3
[INFO] extracting crate zeropool-bn 0.5.9 into /workspace/builds/worker-100/source
[INFO] validating manifest of crates.io crate zeropool-bn 0.5.9 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate zeropool-bn 0.5.9
[INFO] finished tweaking crates.io crate zeropool-bn 0.5.9
[INFO] tweaked toml for crates.io crate zeropool-bn 0.5.9 written to /workspace/builds/worker-100/source/Cargo.toml
[INFO] crate crates.io crate zeropool-bn 0.5.9 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded borsh-schema-derive-internal v0.8.1
[INFO] [stderr]   Downloaded borsh-derive-internal v0.8.1
[INFO] [stderr]   Downloaded borsh v0.8.1
[INFO] [stderr]   Downloaded borsh-derive v0.8.1
[INFO] [stderr]   Downloaded seq-macro v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 986250f3355a378eeb2e998c302aed712944b782fa52df93d8229b300093181a
[INFO] running `Command { std: "docker" "start" "-a" "986250f3355a378eeb2e998c302aed712944b782fa52df93d8229b300093181a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "986250f3355a378eeb2e998c302aed712944b782fa52df93d8229b300093181a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "986250f3355a378eeb2e998c302aed712944b782fa52df93d8229b300093181a", kill_on_drop: false }`
[INFO] [stdout] 986250f3355a378eeb2e998c302aed712944b782fa52df93d8229b300093181a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-100/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 316205e8ce6f84312cba06c083ca7766687b7f0e1528eb1f2b6dc315a5f3c3e2
[INFO] running `Command { std: "docker" "start" "-a" "316205e8ce6f84312cba06c083ca7766687b7f0e1528eb1f2b6dc315a5f3c3e2", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.60
[INFO] [stderr]    Compiling libc v0.2.86
[INFO] [stderr]    Compiling serde v1.0.123
[INFO] [stderr]     Checking ahash v0.4.7
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking rustc-hex v2.1.0
[INFO] [stderr]     Checking byteorder v1.4.2
[INFO] [stderr]    Compiling seq-macro v0.1.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking crunchy v0.2.2
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling borsh-schema-derive-internal v0.8.1
[INFO] [stderr]    Compiling borsh-derive-internal v0.8.1
[INFO] [stderr]    Compiling proc-macro-crate v0.1.5
[INFO] [stderr]    Compiling borsh-derive v0.8.1
[INFO] [stderr]     Checking borsh v0.8.1
[INFO] [stderr]     Checking zeropool-bn v0.5.9 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `from_jacobian`
[INFO] [stdout]    --> src/groups/mod.rs:347:12
[INFO] [stdout]     |
[INFO] [stdout] 347 |     pub fn from_jacobian(p: G<P>) -> Option<Self> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> benches/api.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] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `zeropool-bn` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "316205e8ce6f84312cba06c083ca7766687b7f0e1528eb1f2b6dc315a5f3c3e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "316205e8ce6f84312cba06c083ca7766687b7f0e1528eb1f2b6dc315a5f3c3e2", kill_on_drop: false }`
[INFO] [stdout] 316205e8ce6f84312cba06c083ca7766687b7f0e1528eb1f2b6dc315a5f3c3e2
