[INFO] cloning repository https://github.com/fre-hu/mdarray
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fre-hu/mdarray" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffre-hu%2Fmdarray", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffre-hu%2Fmdarray'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 021ead129fd725ac77ef98d0ccdf932f61d1fa59
[INFO] testing fre-hu/mdarray against 1.59.0 for beta-1.60-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffre-hu%2Fmdarray" "/workspace/builds/worker-83/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-83/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fre-hu/mdarray on toolchain 1.59.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fre-hu/mdarray
[INFO] finished tweaking git repo https://github.com/fre-hu/mdarray
[INFO] tweaked toml for git repo https://github.com/fre-hu/mdarray written to /workspace/builds/worker-83/source/Cargo.toml
[INFO] crate git repo https://github.com/fre-hu/mdarray already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.59.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a5f457b1a08112d93a7223eeaddcf8f01cf49a398d3035da06e1cb143a78121d
[INFO] running `Command { std: "docker" "start" "-a" "a5f457b1a08112d93a7223eeaddcf8f01cf49a398d3035da06e1cb143a78121d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a5f457b1a08112d93a7223eeaddcf8f01cf49a398d3035da06e1cb143a78121d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a5f457b1a08112d93a7223eeaddcf8f01cf49a398d3035da06e1cb143a78121d", kill_on_drop: false }`
[INFO] [stdout] a5f457b1a08112d93a7223eeaddcf8f01cf49a398d3035da06e1cb143a78121d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-83/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+1.59.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ea84a39fe9bc89ae07d6f36c114aa6b36d46c54c6c512a10c7f38e6f5216f8e0
[INFO] running `Command { std: "docker" "start" "-a" "ea84a39fe9bc89ae07d6f36c114aa6b36d46c54c6c512a10c7f38e6f5216f8e0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling mdarray v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:147:1
[INFO] [stdout]     |
[INFO] [stdout] 147 | #![feature(allocator_api)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:148:1
[INFO] [stdout]     |
[INFO] [stdout] 148 | #![feature(generic_associated_types)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:149:1
[INFO] [stdout]     |
[INFO] [stdout] 149 | #![feature(int_roundings)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | #![feature(marker_trait_attr)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:151:1
[INFO] [stdout]     |
[INFO] [stdout] 151 | #![feature(ptr_metadata)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]    --> src/lib.rs:152:1
[INFO] [stdout]     |
[INFO] [stdout] 152 | #![feature(slice_range)]
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'int_abs_diff'
[INFO] [stdout]    --> src/index.rs:207:64
[INFO] [stdout]     |
[INFO] [stdout] 207 |         let len = (range.end - range.start).div_ceil(self.step.abs_diff(0));
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #89492 <https://github.com/rust-lang/rust/issues/89492> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'int_abs_diff'
[INFO] [stdout]    --> src/index.rs:212:81
[INFO] [stdout]     |
[INFO] [stdout] 212 |             range.start.wrapping_add(len.wrapping_sub(1).wrapping_mul(self.step.abs_diff(0)))
[INFO] [stdout]     |                                                                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #89492 <https://github.com/rust-lang/rust/issues/89492> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'int_abs_diff'
[INFO] [stdout]    --> src/index.rs:228:64
[INFO] [stdout]     |
[INFO] [stdout] 228 |         let len = (range.end - range.start).div_ceil(self.step.abs_diff(0));
[INFO] [stdout]     |                                                                ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #89492 <https://github.com/rust-lang/rust/issues/89492> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'int_abs_diff'
[INFO] [stdout]    --> src/index.rs:233:81
[INFO] [stdout]     |
[INFO] [stdout] 233 |             range.start.wrapping_add(len.wrapping_sub(1).wrapping_mul(self.step.abs_diff(0)))
[INFO] [stdout]     |                                                                                 ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #89492 <https://github.com/rust-lang/rust/issues/89492> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 10 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 `mdarray` due to 11 previous errors
[INFO] running `Command { std: "docker" "inspect" "ea84a39fe9bc89ae07d6f36c114aa6b36d46c54c6c512a10c7f38e6f5216f8e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea84a39fe9bc89ae07d6f36c114aa6b36d46c54c6c512a10c7f38e6f5216f8e0", kill_on_drop: false }`
[INFO] [stdout] ea84a39fe9bc89ae07d6f36c114aa6b36d46c54c6c512a10c7f38e6f5216f8e0