[INFO] cloning repository https://github.com/littlebenlittle/zk
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/littlebenlittle/zk" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flittlebenlittle%2Fzk", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flittlebenlittle%2Fzk'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2c88cd8a8fdd5582104b9944cc7a8a457ab5a840
[INFO] checking littlebenlittle/zk against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flittlebenlittle%2Fzk" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/littlebenlittle/zk on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/littlebenlittle/zk
[INFO] finished tweaking git repo https://github.com/littlebenlittle/zk
[INFO] tweaked toml for git repo https://github.com/littlebenlittle/zk written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/littlebenlittle/zk 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded extract-frontmatter v4.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 15c24e4b5944ef812fe27ed07f716839e34f801ef7d2a6c867a4963061db8fc8
[INFO] running `Command { std: "docker" "start" "-a" "15c24e4b5944ef812fe27ed07f716839e34f801ef7d2a6c867a4963061db8fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "15c24e4b5944ef812fe27ed07f716839e34f801ef7d2a6c867a4963061db8fc8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "15c24e4b5944ef812fe27ed07f716839e34f801ef7d2a6c867a4963061db8fc8", kill_on_drop: false }`
[INFO] [stdout] 15c24e4b5944ef812fe27ed07f716839e34f801ef7d2a6c867a4963061db8fc8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] da7fd87aca8b87249cef40ae6cf08541cf738968af408927bb9b6bc901fbe29f
[INFO] running `Command { std: "docker" "start" "-a" "da7fd87aca8b87249cef40ae6cf08541cf738968af408927bb9b6bc901fbe29f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.41
[INFO] [stderr]    Compiling serde_derive v1.0.140
[INFO] [stderr]    Compiling serde v1.0.140
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking fastrand v1.8.0
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking zeroize v1.5.7
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking extract-frontmatter v4.1.1
[INFO] [stderr]     Checking console v0.15.2
[INFO] [stderr]     Checking tempfile v3.3.0
[INFO] [stderr]     Checking dialoguer v0.10.2
[INFO] [stderr]     Checking tempdir v0.3.7
[INFO] [stderr]    Compiling quote v1.0.20
[INFO] [stderr]    Compiling syn v1.0.98
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clap_derive v3.2.7
[INFO] [stderr]     Checking clap v3.2.14
[INFO] [stderr]     Checking serde_yaml v0.8.26
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking uuid v1.1.2
[INFO] [stderr]     Checking zk v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `ZkMeta`
[INFO] [stdout]  --> src/database/yaml.rs:3:34
[INFO] [stdout]   |
[INFO] [stdout] 3 |     zettelkasten::{Zettelkasten, ZkMeta},
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ZkMeta`
[INFO] [stdout]  --> src/database/yaml.rs:3:34
[INFO] [stdout]   |
[INFO] [stdout] 3 |     zettelkasten::{Zettelkasten, ZkMeta},
[INFO] [stdout]   |                                  ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/database/yaml.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `collections::HashMap`
[INFO] [stdout]  --> src/database/yaml.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 |     collections::HashMap,
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database/yaml.rs:115:13
[INFO] [stdout]     |
[INFO] [stdout] 115 |         let mut db = Database::new(PathBuf::from(tmp_dir.path())).expect("could not create db");
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/database/yaml.rs:130:13
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let mut db = Database::new(root_dir.clone())?;
[INFO] [stdout]     |             ----^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.52s
[INFO] running `Command { std: "docker" "inspect" "da7fd87aca8b87249cef40ae6cf08541cf738968af408927bb9b6bc901fbe29f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da7fd87aca8b87249cef40ae6cf08541cf738968af408927bb9b6bc901fbe29f", kill_on_drop: false }`
[INFO] [stdout] da7fd87aca8b87249cef40ae6cf08541cf738968af408927bb9b6bc901fbe29f