[INFO] crate acacia 0.1.2 is already in cache
[INFO] testing acacia-0.1.2 against 1.38.0 for beta-1.39-1
[INFO] extracting crate acacia 0.1.2 into work/builds/worker-1/source
[INFO] validating manifest of crates.io crate acacia 0.1.2 on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate acacia 0.1.2
[INFO] finished tweaking crates.io crate acacia 0.1.2
[INFO] tweaked toml for crates.io crate acacia 0.1.2 written to work/builds/worker-1/source/Cargo.toml
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 3ba47689cbc512444f07320a3137740e28420db480e39892b74ba713b4f57a6a
[INFO] running `"docker" "start" "-a" "3ba47689cbc512444f07320a3137740e28420db480e39892b74ba713b4f57a6a"`
[INFO] [stderr]    Compiling quickcheck v0.2.27
[INFO] [stderr]    Compiling nalgebra v0.10.1
[INFO] [stderr]    Compiling acacia v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/partition/mod.rs:97:1
[INFO] [stderr]     |
[INFO] [stderr] 97  | / macro_rules! partition_quickcheck (
[INFO] [stderr] 98  | |     ($testfn: ident, $p: ty, $t: ty) => (
[INFO] [stderr] 99  | |         mod $testfn {
[INFO] [stderr] 100 | |             use $crate::partition::{
[INFO] [stderr] ...   |
[INFO] [stderr] 122 | |     )
[INFO] [stderr] 123 | | );
[INFO] [stderr]     | |__^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.64s
[INFO] running `"docker" "inspect" "3ba47689cbc512444f07320a3137740e28420db480e39892b74ba713b4f57a6a"`
[INFO] running `"docker" "rm" "-f" "3ba47689cbc512444f07320a3137740e28420db480e39892b74ba713b4f57a6a"`
[INFO] [stdout] 3ba47689cbc512444f07320a3137740e28420db480e39892b74ba713b4f57a6a
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 57f0c81bac749e0834e2ffc8ff71a3c337692260fdf9af0d69ac0ae0ba963e75
[INFO] running `"docker" "start" "-a" "57f0c81bac749e0834e2ffc8ff71a3c337692260fdf9af0d69ac0ae0ba963e75"`
[INFO] [stderr]    Compiling acacia v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stderr]  --> src/lib.rs:4:19
[INFO] [stderr]   |
[INFO] [stderr] 4 | #![cfg_attr(test, feature(test))]
[INFO] [stderr]   |                   ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]   --> src/partition/unitquad.rs:87:13
[INFO] [stderr]    |
[INFO] [stderr] 87 |         use rand::Rng;
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Node`
[INFO] [stderr]    --> src/data_tree.rs:148:29
[INFO] [stderr]     |
[INFO] [stderr] 148 |     use traits::{NodeState, Node, Positioned};
[INFO] [stderr]     |                             ^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: Could not compile `acacia`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "57f0c81bac749e0834e2ffc8ff71a3c337692260fdf9af0d69ac0ae0ba963e75"`
[INFO] running `"docker" "rm" "-f" "57f0c81bac749e0834e2ffc8ff71a3c337692260fdf9af0d69ac0ae0ba963e75"`
[INFO] [stdout] 57f0c81bac749e0834e2ffc8ff71a3c337692260fdf9af0d69ac0ae0ba963e75