[INFO] fetching crate electro 0.9.3...
[INFO] checking electro-0.9.3 against beta for pr-78714
[INFO] extracting crate electro 0.9.3 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate electro 0.9.3 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate electro 0.9.3
[INFO] finished tweaking crates.io crate electro 0.9.3
[INFO] tweaked toml for crates.io crate electro 0.9.3 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 262e1703929d8f72f1c0ee0aa2ea950d247038e95d6e00564e55df0f474ff9a9
[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" "262e1703929d8f72f1c0ee0aa2ea950d247038e95d6e00564e55df0f474ff9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "262e1703929d8f72f1c0ee0aa2ea950d247038e95d6e00564e55df0f474ff9a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "262e1703929d8f72f1c0ee0aa2ea950d247038e95d6e00564e55df0f474ff9a9", kill_on_drop: false }`
[INFO] [stdout] 262e1703929d8f72f1c0ee0aa2ea950d247038e95d6e00564e55df0f474ff9a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7a920211b5cd6372d291b0733a20a19a549e2feade7d078cdde58d88328651ad
[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" "7a920211b5cd6372d291b0733a20a19a549e2feade7d078cdde58d88328651ad", kill_on_drop: false }`
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking electro v0.9.3 (/opt/rustwide/workdir)
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:126:35
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]...lower_right[0];
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]..lower_right[0];
[INFO] [stdout]     |                                   ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]..=lower_right[0];
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:128:35
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]...lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]..lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]..=lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:129:33
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]...upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]..upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]..=upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:257:43
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:274:43
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:300:43
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:322:43
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:341:43
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:359:43
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:126:35
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]...lower_right[0];
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]..lower_right[0];
[INFO] [stdout]     |                                   ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 126 |   let bottom_horiz = lower_left[0]..=lower_right[0];
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:128:35
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]...lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]..lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 128 |   let right_vert = (upper_right[1]..=lower_right[1]).rev();
[INFO] [stdout]     |                                   ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:129:33
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]...upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]..upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 129 |   let top_horiz = (upper_left[0]..=upper_right[0]).rev();
[INFO] [stdout]     |                                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:257:43
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 257 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:274:43
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 274 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:300:43
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 300 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:322:43
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 322 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:341:43
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 341 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: unexpected token: `...`
[INFO] [stdout]    --> src/topo.rs:359:43
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start...conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `..` for an exclusive range
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start..conductor_end;
[INFO] [stdout]     |                                           ^^
[INFO] [stdout] help: or `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout] 359 |   let conductor_col_inds = conductor_start..=conductor_end;
[INFO] [stdout]     |                                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(inclusive_range_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(step_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(inclusive_range_syntax)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | #![feature(step_by)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | #![feature(slice_patterns)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `electro`
[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 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "7a920211b5cd6372d291b0733a20a19a549e2feade7d078cdde58d88328651ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a920211b5cd6372d291b0733a20a19a549e2feade7d078cdde58d88328651ad", kill_on_drop: false }`
[INFO] [stdout] 7a920211b5cd6372d291b0733a20a19a549e2feade7d078cdde58d88328651ad