[INFO] cloning repository https://github.com/nathanfaucett/rs-persistent_list
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nathanfaucett/rs-persistent_list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanfaucett%2Frs-persistent_list", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanfaucett%2Frs-persistent_list'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 672314bda0812a219dcfd35cf7ef8a8b5853cd2e
[INFO] documenting nathanfaucett/rs-persistent_list against 1.69.0 for beta-1.70-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanfaucett%2Frs-persistent_list" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nathanfaucett/rs-persistent_list on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nathanfaucett/rs-persistent_list
[INFO] finished tweaking git repo https://github.com/nathanfaucett/rs-persistent_list
[INFO] tweaked toml for git repo https://github.com/nathanfaucett/rs-persistent_list written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/nathanfaucett/rs-persistent_list 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/nathanfaucett/rs-collection_traits`
[INFO] [stderr]     Updating git repository `https://github.com/nathanfaucett/rs-linked_list`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 525076c91ed60f386ea5d433e643f0861a1f1b31f91317c40c146b95c15f3c2d
[INFO] running `Command { std: "docker" "start" "-a" "525076c91ed60f386ea5d433e643f0861a1f1b31f91317c40c146b95c15f3c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "525076c91ed60f386ea5d433e643f0861a1f1b31f91317c40c146b95c15f3c2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "525076c91ed60f386ea5d433e643f0861a1f1b31f91317c40c146b95c15f3c2d", kill_on_drop: false }`
[INFO] [stdout] 525076c91ed60f386ea5d433e643f0861a1f1b31f91317c40c146b95c15f3c2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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=warn" "-e" "RUSTDOCFLAGS=--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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a70b817d2a7d8a9bb5dbaf84526d94efafd133abf2035a7612c40678c9bd1923
[INFO] running `Command { std: "docker" "start" "-a" "a70b817d2a7d8a9bb5dbaf84526d94efafd133abf2035a7612c40678c9bd1923", kill_on_drop: false }`
[INFO] [stderr]     Checking collection_traits v0.1.0 (https://github.com/nathanfaucett/rs-collection_traits#516b19e4)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/lib.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(custom_attribute)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: removed in favor of `#![register_tool]` and `#![register_attr]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0463]: can't find crate for `collections`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | extern crate collections;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Iter` in `linked_list`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/linked_list.rs:73:30
[INFO] [stdout]    |
[INFO] [stdout] 73 |     type Iter = linked_list::Iter<'a, T>;
[INFO] [stdout]    |                              ^^^^ not found in `linked_list`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::option::Iter;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::result::Iter;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::slice::Iter;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `Iter`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 73 -     type Iter = linked_list::Iter<'a, T>;
[INFO] [stdout] 73 +     type Iter = Iter<'a, T>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `IterMut` in `linked_list`
[INFO] [stdout]   --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/linked_list.rs:82:33
[INFO] [stdout]    |
[INFO] [stdout] 82 |     type IterMut = linked_list::IterMut<'a, T>;
[INFO] [stdout]    |                                 ^^^^^^^ not found in `linked_list`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::option::IterMut;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::result::IterMut;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::slice::IterMut;
[INFO] [stdout]    |
[INFO] [stdout] help: if you import `IterMut`, refer to it directly
[INFO] [stdout]    |
[INFO] [stdout] 82 -     type IterMut = linked_list::IterMut<'a, T>;
[INFO] [stdout] 82 +     type IterMut = IterMut<'a, T>;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(collections)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0635]: unknown feature `collections`
[INFO] [stdout]  --> /opt/rustwide/cargo-home/git/checkouts/rs-collection_traits-dca7cc2c0ed7a0a9/516b19e/src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(collections)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0412, E0463, E0554, E0557, E0635.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `collection_traits` due to 7 previous errors
[INFO] running `Command { std: "docker" "inspect" "a70b817d2a7d8a9bb5dbaf84526d94efafd133abf2035a7612c40678c9bd1923", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a70b817d2a7d8a9bb5dbaf84526d94efafd133abf2035a7612c40678c9bd1923", kill_on_drop: false }`
[INFO] [stdout] a70b817d2a7d8a9bb5dbaf84526d94efafd133abf2035a7612c40678c9bd1923
