[INFO] cloning repository https://github.com/brecert/a2048
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/brecert/a2048" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrecert%2Fa2048", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrecert%2Fa2048'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e7cee45520f96bc5e85532e1c0e5f63bbfb4ccd2
[INFO] documenting brecert/a2048 against master#d7d9f15be205b45d44700e7ac33b4f79b91f9680 for pr-117450
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrecert%2Fa2048" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brecert/a2048 on toolchain d7d9f15be205b45d44700e7ac33b4f79b91f9680
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brecert/a2048
[INFO] finished tweaking git repo https://github.com/brecert/a2048
[INFO] tweaked toml for git repo https://github.com/brecert/a2048 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/brecert/a2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/brecert/grid`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 788cd5b5d314067099695cca1dd7556f5b3dbec0d7cf9b91ff0db427312cb310
[INFO] running `Command { std: "docker" "start" "-a" "788cd5b5d314067099695cca1dd7556f5b3dbec0d7cf9b91ff0db427312cb310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "788cd5b5d314067099695cca1dd7556f5b3dbec0d7cf9b91ff0db427312cb310", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "788cd5b5d314067099695cca1dd7556f5b3dbec0d7cf9b91ff0db427312cb310", kill_on_drop: false }`
[INFO] [stdout] 788cd5b5d314067099695cca1dd7556f5b3dbec0d7cf9b91ff0db427312cb310
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c634665f4e504f16a2d4689a7cf15dd50147dab3c26c303aa3ad15edb025005
[INFO] running `Command { std: "docker" "start" "-a" "3c634665f4e504f16a2d4689a7cf15dd50147dab3c26c303aa3ad15edb025005", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]    Compiling argh_shared v0.1.6
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking grid v0.5.1-alpha.0 (https://github.com/brecert/grid#4b840059)
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]    Compiling argh_derive v0.1.6
[INFO] [stderr]     Checking argh v0.1.6
[INFO] [stderr]  Documenting a2048 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.99s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/a2048/index.html
[INFO] running `Command { std: "docker" "inspect" "3c634665f4e504f16a2d4689a7cf15dd50147dab3c26c303aa3ad15edb025005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c634665f4e504f16a2d4689a7cf15dd50147dab3c26c303aa3ad15edb025005", kill_on_drop: false }`
[INFO] [stdout] 3c634665f4e504f16a2d4689a7cf15dd50147dab3c26c303aa3ad15edb025005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+d7d9f15be205b45d44700e7ac33b4f79b91f9680" "rustdoc" "--lib" "-Zrustdoc-map" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7e3344f7753e069214cbedfddb0e204c8bbed04ed528e3a1901e368cede99f8
[INFO] running `Command { std: "docker" "start" "-a" "f7e3344f7753e069214cbedfddb0e204c8bbed04ed528e3a1901e368cede99f8", kill_on_drop: false }`
[INFO] [stderr]  Documenting a2048 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
[INFO] [stderr]    Generated /opt/rustwide/target/doc/a2048/index.html
[INFO] running `Command { std: "docker" "inspect" "f7e3344f7753e069214cbedfddb0e204c8bbed04ed528e3a1901e368cede99f8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7e3344f7753e069214cbedfddb0e204c8bbed04ed528e3a1901e368cede99f8", kill_on_drop: false }`
[INFO] [stdout] f7e3344f7753e069214cbedfddb0e204c8bbed04ed528e3a1901e368cede99f8
[INFO] documenting brecert/a2048 against master#50be22964035027398754e54cd3a497efb00f83e for pr-117450
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbrecert%2Fa2048" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/brecert/a2048 on toolchain 50be22964035027398754e54cd3a497efb00f83e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/brecert/a2048
[INFO] finished tweaking git repo https://github.com/brecert/a2048
[INFO] tweaked toml for git repo https://github.com/brecert/a2048 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/brecert/a2048 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fd88cd362d39f6c8e054505eb50fd75d012b3c25ceebf63b39e9738f969c54a1
[INFO] running `Command { std: "docker" "start" "-a" "fd88cd362d39f6c8e054505eb50fd75d012b3c25ceebf63b39e9738f969c54a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fd88cd362d39f6c8e054505eb50fd75d012b3c25ceebf63b39e9738f969c54a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd88cd362d39f6c8e054505eb50fd75d012b3c25ceebf63b39e9738f969c54a1", kill_on_drop: false }`
[INFO] [stdout] fd88cd362d39f6c8e054505eb50fd75d012b3c25ceebf63b39e9738f969c54a1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+50be22964035027398754e54cd3a497efb00f83e" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3aebd97b473ed493a2f340ea8f68a125940846f493bb6718e5552a5f97b50aa7
[INFO] running `Command { std: "docker" "start" "-a" "3aebd97b473ed493a2f340ea8f68a125940846f493bb6718e5552a5f97b50aa7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.107
[INFO] [stderr]    Compiling proc-macro2 v1.0.32
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling signal-hook v0.3.10
[INFO] [stderr]    Compiling parking_lot_core v0.8.5
[INFO] [stderr]    Compiling syn v1.0.81
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling argh_shared v0.1.6
[INFO] [stderr]     Checking ppv-lite86 v0.2.15
[INFO] [stderr]     Checking no-std-compat v0.4.1
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]     Checking grid v0.5.1-alpha.0 (https://github.com/brecert/grid#4b840059)
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.4
[INFO] [stderr]     Checking signal-hook-mio v0.2.1
[INFO] [stderr]     Checking crossterm v0.22.1
[INFO] [stderr]    Compiling argh_derive v0.1.6
[INFO] [stderr]     Checking argh v0.1.6
[INFO] [stderr]  Documenting a2048 v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0741]: `Placement` must implement `ConstParamTy` to be used as the type of a const generic parameter
[INFO] [stdout]   --> src/lib.rs:26:30
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub fn sort_zeros<const DIR: Placement>(arr: &mut [usize]) {
[INFO] [stdout]    |                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: add `#[derive(ConstParamTy)]` to the struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + #[derive(ConstParamTy)]
[INFO] [stdout] 9  | pub enum Placement {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0741]: `Placement` must implement `ConstParamTy` to be used as the type of a const generic parameter
[INFO] [stdout]   --> src/lib.rs:51:30
[INFO] [stdout]    |
[INFO] [stdout] 51 | pub fn merge_2048<const DIR: Placement>(arr: &[usize]) -> (Vec<usize>, usize) {
[INFO] [stdout]    |                              ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout] help: add `#[derive(ConstParamTy)]` to the struct
[INFO] [stdout]    |
[INFO] [stdout] 8  + #[derive(ConstParamTy)]
[INFO] [stdout] 9  | pub enum Placement {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0741`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `a2048`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/50be22964035027398754e54cd3a497efb00f83e/bin/rustdoc --edition=2018 --crate-type lib --crate-name a2048 src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b2b07fbe7a645b69 -L dependency=/opt/rustwide/target/debug/deps --extern argh=/opt/rustwide/target/debug/deps/libargh-e478b637701613e3.rmeta --extern crossterm=/opt/rustwide/target/debug/deps/libcrossterm-3a9319cb22a51914.rmeta --extern grid=/opt/rustwide/target/debug/deps/libgrid-b35d4092e2b3ba86.rmeta --extern paste=/opt/rustwide/target/debug/deps/libpaste-b79532ee22591ef8.so --extern rand=/opt/rustwide/target/debug/deps/librand-b160b166edf48eda.rmeta --cap-lints=forbid --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3aebd97b473ed493a2f340ea8f68a125940846f493bb6718e5552a5f97b50aa7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3aebd97b473ed493a2f340ea8f68a125940846f493bb6718e5552a5f97b50aa7", kill_on_drop: false }`
[INFO] [stdout] 3aebd97b473ed493a2f340ea8f68a125940846f493bb6718e5552a5f97b50aa7