[INFO] cloning repository https://github.com/kbknapp/cli2048-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kbknapp/cli2048-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbknapp%2Fcli2048-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbknapp%2Fcli2048-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22aeeb9704928402819c251c925cdd35e48ed498
[INFO] documenting kbknapp/cli2048-rs against nightly for scrape-examples
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkbknapp%2Fcli2048-rs" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kbknapp/cli2048-rs on toolchain nightly
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kbknapp/cli2048-rs
[INFO] finished tweaking git repo https://github.com/kbknapp/cli2048-rs
[INFO] tweaked toml for git repo https://github.com/kbknapp/cli2048-rs written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/kbknapp/cli2048-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap v0.4.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 958ce89f199f596711f450ba416120eca30b356243d4fe54718ff77d9efa0c04
[INFO] running `Command { std: "docker" "start" "-a" "958ce89f199f596711f450ba416120eca30b356243d4fe54718ff77d9efa0c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "958ce89f199f596711f450ba416120eca30b356243d4fe54718ff77d9efa0c04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "958ce89f199f596711f450ba416120eca30b356243d4fe54718ff77d9efa0c04", kill_on_drop: false }`
[INFO] [stdout] 958ce89f199f596711f450ba416120eca30b356243d4fe54718ff77d9efa0c04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 725483ea617dbb7f7b5d1cbdd143c06424a4410dbaddf04d4c3ea47b73cacdc9
[INFO] running `Command { std: "docker" "start" "-a" "725483ea617dbb7f7b5d1cbdd143c06424a4410dbaddf04d4c3ea47b73cacdc9", kill_on_drop: false }`
[INFO] [stderr]     Checking clap v0.4.9
[INFO] [stdout] error[E0425]: cannot find function `set_exit_status` in module `env`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-0.4.9/src/app.rs:335:24
[INFO] [stdout]     |
[INFO] [stdout] 335 |         if quit { env::set_exit_status(1); self.exit(); }
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^ not found in `env`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-0.4.9/src/app.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | extern crate libc;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]   = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: use of unstable library feature 'rustc_private': this crate is being loaded from the sysroot, an unstable location; did you mean to load this crate from crates.io via `Cargo.toml` instead?
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-0.4.9/src/app.rs:329:18
[INFO] [stdout]     |
[INFO] [stdout] 329 |         unsafe { libc::exit(0); }
[INFO] [stdout]     |                  ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: see issue #27812 <https://github.com/rust-lang/rust/issues/27812> for more information
[INFO] [stdout]     = help: add `#![feature(rustc_private)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `exit_status`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-0.4.9/src/lib.rs:3:18
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(libc, exit_status)]
[INFO] [stdout]   |                  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0425, E0635, E0658.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0425`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `clap` due to 5 previous errors
[INFO] running `Command { std: "docker" "inspect" "725483ea617dbb7f7b5d1cbdd143c06424a4410dbaddf04d4c3ea47b73cacdc9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "725483ea617dbb7f7b5d1cbdd143c06424a4410dbaddf04d4c3ea47b73cacdc9", kill_on_drop: false }`
[INFO] [stdout] 725483ea617dbb7f7b5d1cbdd143c06424a4410dbaddf04d4c3ea47b73cacdc9