[INFO] fetching crate skribe 0.1.0...
[INFO] checking skribe-0.1.0 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate skribe 0.1.0 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate skribe 0.1.0 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 crates.io crate skribe 0.1.0
[INFO] finished tweaking crates.io crate skribe 0.1.0
[INFO] tweaked toml for crates.io crate skribe 0.1.0 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 92 packages
[INFO] [stderr]       Adding arrayvec v0.5.2 (latest: v0.7.4)
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[INFO] [stderr]       Adding nom v4.2.3 (latest: v7.1.3)
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[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded yaml-rust v0.3.5
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e0f2fc8d11e07bcbe799067658ab5da6b3b03b0e0b4154a21d0127ec123ab5a5
[INFO] running `Command { std: "docker" "start" "-a" "e0f2fc8d11e07bcbe799067658ab5da6b3b03b0e0b4154a21d0127ec123ab5a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e0f2fc8d11e07bcbe799067658ab5da6b3b03b0e0b4154a21d0127ec123ab5a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e0f2fc8d11e07bcbe799067658ab5da6b3b03b0e0b4154a21d0127ec123ab5a5", kill_on_drop: false }`
[INFO] [stdout] e0f2fc8d11e07bcbe799067658ab5da6b3b03b0e0b4154a21d0127ec123ab5a5
[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=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] 8a9c22035868b4f1885d37e977d2035abb6d6dea6222abe1ad919a9222b5ceff
[INFO] running `Command { std: "docker" "start" "-a" "8a9c22035868b4f1885d37e977d2035abb6d6dea6222abe1ad919a9222b5ceff", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]     Checking yaml-rust v0.3.5
[INFO] [stderr]     Checking chrono v0.4.37
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]     Checking clap v2.34.0
[INFO] [stderr]     Checking skribe v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/cfg.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Path`
[INFO] [stdout]  --> src/cfg.rs:4:17
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::path::{Path, PathBuf};
[INFO] [stdout]   |                 ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(uniform_paths)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `uniform_paths` has been stable since 1.32.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(uniform_paths)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `open` and `parse` are never used
[INFO] [stdout]   --> src/cfg.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Config {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] 20 |     fn open(file_path: PathBuf) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn parse(content: &str) -> Result<Data, Error> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `save` is never used
[INFO] [stdout]   --> src/db.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub trait PersistentDatabase {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] 56 |     fn load(&mut self);
[INFO] [stdout] 57 |     fn save(&self);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:118:21
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 let mut editable = skribe.get_mut(&base_id).unwrap();
[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: associated functions `open` and `parse` are never used
[INFO] [stdout]   --> src/cfg.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl Config {
[INFO] [stdout]    | ----------- associated functions in this implementation
[INFO] [stdout] 20 |     fn open(file_path: PathBuf) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn parse(content: &str) -> Result<Data, Error> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `save` is never used
[INFO] [stdout]   --> src/db.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub trait PersistentDatabase {
[INFO] [stdout]    |           ------------------ method in this trait
[INFO] [stdout] 56 |     fn load(&mut self);
[INFO] [stdout] 57 |     fn save(&self);
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tags`
[INFO] [stdout]   --> src/bin/skribe.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn add_item(text: String, tags: Vec<String>) -> Id {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_tags`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_item` is never used
[INFO] [stdout]   --> src/bin/skribe.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn add_item(text: String, tags: Vec<String>) -> Id {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `tags`
[INFO] [stdout]   --> src/bin/skribe.rs:34:27
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn add_item(text: String, tags: Vec<String>) -> Id {
[INFO] [stdout]    |                           ^^^^ help: if this is intentional, prefix it with an underscore: `_tags`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add_item` is never used
[INFO] [stdout]   --> src/bin/skribe.rs:34:4
[INFO] [stdout]    |
[INFO] [stdout] 34 | fn add_item(text: String, tags: Vec<String>) -> Id {
[INFO] [stdout]    |    ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.20s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nom v4.2.3
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "8a9c22035868b4f1885d37e977d2035abb6d6dea6222abe1ad919a9222b5ceff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a9c22035868b4f1885d37e977d2035abb6d6dea6222abe1ad919a9222b5ceff", kill_on_drop: false }`
[INFO] [stdout] 8a9c22035868b4f1885d37e977d2035abb6d6dea6222abe1ad919a9222b5ceff