[INFO] cloning repository https://github.com/palacaze/euler-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/palacaze/euler-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpalacaze%2Feuler-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpalacaze%2Feuler-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ee87f7b9889cbdb7d6a94ffeea0229f3dffbe2a6
[INFO] testing palacaze/euler-rs against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpalacaze%2Feuler-rs" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/palacaze/euler-rs on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/palacaze/euler-rs
[INFO] finished tweaking git repo https://github.com/palacaze/euler-rs
[INFO] tweaked toml for git repo https://github.com/palacaze/euler-rs written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/palacaze/euler-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded petgraph v0.2.10
[INFO] [stderr]   Downloaded rust-gmp v0.3.2
[INFO] [stderr]   Downloaded rulinalg v0.2.2
[INFO] [stderr]   Downloaded ndarray v0.6.10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 27ce8998afcfd4f54b313fa639b0aeca83015a359c37833a090667a4da16a9f3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "27ce8998afcfd4f54b313fa639b0aeca83015a359c37833a090667a4da16a9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27ce8998afcfd4f54b313fa639b0aeca83015a359c37833a090667a4da16a9f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27ce8998afcfd4f54b313fa639b0aeca83015a359c37833a090667a4da16a9f3", kill_on_drop: false }`
[INFO] [stdout] 27ce8998afcfd4f54b313fa639b0aeca83015a359c37833a090667a4da16a9f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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:eaef2f80f755933c374d2ae5edccceec0c1312ceb8a4e0b6404e8ab76561e1e5" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 675d8bc6306f29d9729d3f3714f0689d03ce0d876ea2c30a955c8544bd780975
[INFO] running `Command { std: "docker" "start" "-a" "675d8bc6306f29d9729d3f3714f0689d03ce0d876ea2c30a955c8544bd780975", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]    Compiling hamming v0.1.3
[INFO] [stderr]    Compiling rawpointer v0.1.0
[INFO] [stderr]    Compiling primal-estimate v0.2.1
[INFO] [stderr]    Compiling ndarray v0.6.10
[INFO] [stderr]    Compiling deque v0.3.2
[INFO] [stderr]    Compiling permutohedron v0.2.4
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.3.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling itertools v0.5.10
[INFO] [stderr]    Compiling petgraph v0.2.10
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rust-gmp v0.3.2
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling primal-check v0.2.3
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling primal-bit v0.2.4
[INFO] [stderr]    Compiling primal-sieve v0.2.9
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling rulinalg v0.2.2
[INFO] [stderr]    Compiling rayon v0.4.3
[INFO] [stderr]    Compiling primal v0.2.3
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[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 `euler` due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "675d8bc6306f29d9729d3f3714f0689d03ce0d876ea2c30a955c8544bd780975", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "675d8bc6306f29d9729d3f3714f0689d03ce0d876ea2c30a955c8544bd780975", kill_on_drop: false }`
[INFO] [stdout] 675d8bc6306f29d9729d3f3714f0689d03ce0d876ea2c30a955c8544bd780975