[INFO] fetching crate units-nostd 0.2.0...
[INFO] testing units-nostd-0.2.0 against 1.99.0-beta.8 for beta-1.100-2
[INFO] extracting crate units-nostd 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate units-nostd 0.2.0
[INFO] finished tweaking crates.io crate units-nostd 0.2.0
[INFO] tweaked toml for crates.io crate units-nostd 0.2.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate units-nostd 0.2.0 on toolchain 1.99.0-beta.8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate units-nostd 0.2.0 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" "+1.99.0-beta.8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded gcd v2.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff
[INFO] running `Command { std: "docker" "start" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff" "/opt/rustwide/cargo-home/bin/cargo" "+1.99.0-beta.8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]    Compiling gcd v2.3.0
[INFO] [stderr]    Compiling typenum v1.20.1
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling num v0.4.3
[INFO] [stderr]    Compiling units-nostd v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]    --> src/lib.rs:505:1
[INFO] [stdout]     |
[INFO] [stdout] 505 | #![feature(generic_const_exprs)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `named_scalable_unit`
[INFO] [stdout]    --> src/lib.rs:591:14
[INFO] [stdout]     |
[INFO] [stdout] 591 | macro_rules! named_scalable_unit {
[INFO] [stdout]     |              ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` (part of `#[warn(unused)]`) 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 `units-nostd` (lib) due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff", kill_on_drop: false }`
[INFO] [stdout] 64033da2087c0fa42cb83d3b13f96e74a4ff378d7a9cb946fbe26714c307e3ff
