[INFO] cloning repository https://github.com/mrodda/trees
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrodda/trees" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodda%2Ftrees", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodda%2Ftrees'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8f78d0f375e97422dbffe7ca2344e8dadb562de2
[INFO] testing mrodda/trees against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrodda%2Ftrees" "/workspace/builds/worker-57/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-57/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrodda/trees on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrodda/trees
[INFO] finished tweaking git repo https://github.com/mrodda/trees
[INFO] tweaked toml for git repo https://github.com/mrodda/trees written to /workspace/builds/worker-57/source/Cargo.toml
[INFO] crate git repo https://github.com/mrodda/trees already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v3.0.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93864fba106ed955300628e188acf92f037ececd85f9cc8f08c5b52d5e5c5274
[INFO] running `Command { std: "docker" "start" "-a" "93864fba106ed955300628e188acf92f037ececd85f9cc8f08c5b52d5e5c5274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93864fba106ed955300628e188acf92f037ececd85f9cc8f08c5b52d5e5c5274", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93864fba106ed955300628e188acf92f037ececd85f9cc8f08c5b52d5e5c5274", kill_on_drop: false }`
[INFO] [stdout] 93864fba106ed955300628e188acf92f037ececd85f9cc8f08c5b52d5e5c5274
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-57/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a9582a79e2ec976a76bf00a380b12d631a1e9a98b7a0109b8237f4c972693232
[INFO] running `Command { std: "docker" "start" "-a" "a9582a79e2ec976a76bf00a380b12d631a1e9a98b7a0109b8237f4c972693232", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.116
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]    Compiling os_str_bytes v6.0.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap_derive v3.0.12
[INFO] [stderr]    Compiling clap v3.0.13
[INFO] [stderr]    Compiling trees v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `RefCell` in this scope
[INFO] [stdout]   --> src/element.rs:19:13
[INFO] [stdout]    |
[INFO] [stdout] 19 |     parent: RefCell<Option<Element>>,
[INFO] [stdout]    |             ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `RefCell` in this scope
[INFO] [stdout]   --> src/element.rs:20:9
[INFO] [stdout]    |
[INFO] [stdout] 20 |     me: RefCell<Option<Element>>,
[INFO] [stdout]    |         ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]   --> src/element.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut me = RefCell::new(Self {
[INFO] [stdout]    |                      ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]   --> src/element.rs:43:21
[INFO] [stdout]    |
[INFO] [stdout] 43 |             parent: RefCell::new(None),
[INFO] [stdout]    |                     ^^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use core::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::cell::RefCell;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `RefCell`
[INFO] [stdout]    --> src/main.rs:104:37
[INFO] [stdout]     |
[INFO] [stdout] 104 |     let mut root = Tree::new_branch(RefCell::new(Element::make_root(".".to_owned(), ".".into())));
[INFO] [stdout]     |                                     ^^^^^^^ not found in this scope
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 3   | use core::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 3   | use std::cell::RefCell;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `PathBuf`, `Path`, `Rc`, `ReadDir`, `Weak`
[INFO] [stdout]  --> src/main.rs:6:20
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fs::{DirEntry, ReadDir},
[INFO] [stdout]   |                    ^^^^^^^
[INFO] [stdout] 7 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^  ^^^^^^^
[INFO] [stdout] 8 |     rc::{Rc, Weak},
[INFO] [stdout]   |          ^^  ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DirEntry`, `Path`, `Rc`, `ReadDir`, `Weak`, `error::Error`
[INFO] [stdout]  --> src/element.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 |     fs::{DirEntry, ReadDir},
[INFO] [stdout]   |          ^^^^^^^^  ^^^^^^^
[INFO] [stdout] 5 |     error::Error,
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 6 |     path::{Path, PathBuf},
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 7 |     rc::{Rc, Weak},
[INFO] [stdout]   |          ^^  ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Leaf`
[INFO] [stdout]  --> src/tree.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::tree::Tree::{Branch, Leaf};
[INFO] [stdout]   |                                 ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ffi::OsString`
[INFO] [stdout]  --> src/tree.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ffi::OsString;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing fields `parent` and `prefix` in initializer of `Element`
[INFO] [stdout]   --> src/element.rs:25:35
[INFO] [stdout]    |
[INFO] [stdout] 25 |         let mut me = RefCell::new(Self {
[INFO] [stdout]    |                                   ^^^^ missing `parent` and `prefix`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing field `me` in initializer of `Element`
[INFO] [stdout]   --> src/element.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         Self {
[INFO] [stdout]    |         ^^^^ missing `me`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0063]: missing fields `me` and `parent` in initializer of `Element`
[INFO] [stdout]   --> src/element.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |         Self {
[INFO] [stdout]    |         ^^^^ missing `me` and `parent`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 8 previous errors; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0063, E0412, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0063`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `trees` due to 9 previous errors; 4 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "a9582a79e2ec976a76bf00a380b12d631a1e9a98b7a0109b8237f4c972693232", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a9582a79e2ec976a76bf00a380b12d631a1e9a98b7a0109b8237f4c972693232", kill_on_drop: false }`
[INFO] [stdout] a9582a79e2ec976a76bf00a380b12d631a1e9a98b7a0109b8237f4c972693232