[INFO] cloning repository https://github.com/perlindgren/const_experiments
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/perlindgren/const_experiments" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Fconst_experiments", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Fconst_experiments'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d70a3678a73747bc7c1c9ff5033291d6e8af7a9c
[INFO] checking perlindgren/const_experiments against beta-2020-07-24 for pr-75494-beta
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fperlindgren%2Fconst_experiments" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/perlindgren/const_experiments on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/perlindgren/const_experiments
[INFO] finished tweaking git repo https://github.com/perlindgren/const_experiments
[INFO] tweaked toml for git repo https://github.com/perlindgren/const_experiments written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/perlindgren/const_experiments already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e41c189a62539000f1712bea84804ba77329316152c2100be8f3a985274b61ab
[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" "e41c189a62539000f1712bea84804ba77329316152c2100be8f3a985274b61ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e41c189a62539000f1712bea84804ba77329316152c2100be8f3a985274b61ab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e41c189a62539000f1712bea84804ba77329316152c2100be8f3a985274b61ab", kill_on_drop: false }`
[INFO] [stdout] e41c189a62539000f1712bea84804ba77329316152c2100be8f3a985274b61ab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=forbid" "-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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3837a612e8e87ea70a33a011e0c9cc3879a8e8d4d4fbbf6dd9f2a7abc5befcbd
[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" "3837a612e8e87ea70a33a011e0c9cc3879a8e8d4d4fbbf6dd9f2a7abc5befcbd", kill_on_drop: false }`
[INFO] [stderr]     Checking const_experiments v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]  --> src/vec.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Vec<T, const N: usize> {
[INFO] [stdout]   |                         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]  --> src/vec.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | impl<T, const N: usize> Vec<T, N>
[INFO] [stdout]   |               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]    --> src/vec.rs:169:15
[INFO] [stdout]     |
[INFO] [stdout] 169 | impl<T, const N: usize> Drop for Vec<T, N> {
[INFO] [stdout]     |               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]  --> src/vec.rs:4:25
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Vec<T, const N: usize> {
[INFO] [stdout]   |                         ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]  --> src/vec.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 | impl<T, const N: usize> Vec<T, N>
[INFO] [stdout]   |               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: const generics are unstable
[INFO] [stdout]    --> src/vec.rs:169:15
[INFO] [stdout]     |
[INFO] [stdout] 169 | impl<T, const N: usize> Drop for Vec<T, N> {
[INFO] [stdout]     |               ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #44580 <https://github.com/rust-lang/rust/issues/44580> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/vec.rs:462:5
[INFO] [stdout]     |
[INFO] [stdout] 462 | /     macro_rules! droppable {
[INFO] [stdout] 463 | |         () => {
[INFO] [stdout] 464 | |             struct Droppable;
[INFO] [stdout] 465 | |             impl Droppable {
[INFO] [stdout] ...   |
[INFO] [stdout] 482 | |         };
[INFO] [stdout] 483 | |     }
[INFO] [stdout]     | |_____^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `const_experiments`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 4 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] [stdout] Some errors have detailed explanations: E0554, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "3837a612e8e87ea70a33a011e0c9cc3879a8e8d4d4fbbf6dd9f2a7abc5befcbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3837a612e8e87ea70a33a011e0c9cc3879a8e8d4d4fbbf6dd9f2a7abc5befcbd", kill_on_drop: false }`
[INFO] [stdout] 3837a612e8e87ea70a33a011e0c9cc3879a8e8d4d4fbbf6dd9f2a7abc5befcbd
