[INFO] fetching crate scicrypt-numbertheory 0.7.1...
[INFO] testing scicrypt-numbertheory-0.7.1 against 1.95.0 for beta-1.96-2
[INFO] extracting crate scicrypt-numbertheory 0.7.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate scicrypt-numbertheory 0.7.1
[INFO] finished tweaking crates.io crate scicrypt-numbertheory 0.7.1
[INFO] tweaked toml for crates.io crate scicrypt-numbertheory 0.7.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate scicrypt-numbertheory 0.7.1 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 126 packages to latest compatible versions
[INFO] [stderr]       Adding criterion v0.3.6 (available: v0.8.2)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[INFO] [stderr]       Adding rand_core v0.6.4 (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]  Downloading crates ...
[INFO] [stderr]   Downloaded primal-sieve v0.3.7
[INFO] [stderr]   Downloaded az v1.3.0
[INFO] [stderr]   Downloaded scicrypt-bigint v0.7.1
[INFO] [stderr]   Downloaded scicrypt-traits v0.7.1
[INFO] [stderr]   Downloaded hamming v0.1.3
[INFO] [stderr]   Downloaded glass_pumpkin v1.10.0
[INFO] [stderr]   Downloaded primal v0.3.3
[INFO] [stderr]   Downloaded primal-estimate v0.3.3
[INFO] [stderr]   Downloaded rug v1.29.0
[INFO] [stderr]   Downloaded gmp-mpfr-sys v1.7.1
[INFO] [stderr]   Downloaded primal-bit v0.3.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f2209b4fc8e2a9aef63d1aacda6d8744a6d29625ff4cbcb95726286dfec7553e
[INFO] running `Command { std: "docker" "start" "-a" "f2209b4fc8e2a9aef63d1aacda6d8744a6d29625ff4cbcb95726286dfec7553e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f2209b4fc8e2a9aef63d1aacda6d8744a6d29625ff4cbcb95726286dfec7553e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2209b4fc8e2a9aef63d1aacda6d8744a6d29625ff4cbcb95726286dfec7553e", kill_on_drop: false }`
[INFO] [stdout] f2209b4fc8e2a9aef63d1aacda6d8744a6d29625ff4cbcb95726286dfec7553e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f2c765f4623ea3f4eba8959b0326a7d8ef5a9c6b6a1672d437750a41a405ece0
[INFO] running `Command { std: "docker" "start" "-a" "f2c765f4623ea3f4eba8959b0326a7d8ef5a9c6b6a1672d437750a41a405ece0", kill_on_drop: false }`
[INFO] [stderr]    Compiling gmp-mpfr-sys v1.7.1
[INFO] [stderr]    Compiling rug v1.29.0
[INFO] [stderr]    Compiling az v1.3.0
[INFO] [stderr]    Compiling serde_core v1.0.228
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling scicrypt-traits v0.7.1
[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/scicrypt-traits-0.7.1/src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(trait_alias)]
[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 `scicrypt-traits` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f2c765f4623ea3f4eba8959b0326a7d8ef5a9c6b6a1672d437750a41a405ece0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2c765f4623ea3f4eba8959b0326a7d8ef5a9c6b6a1672d437750a41a405ece0", kill_on_drop: false }`
[INFO] [stdout] f2c765f4623ea3f4eba8959b0326a7d8ef5a9c6b6a1672d437750a41a405ece0
