[INFO] fetching crate mdbook-protobuf 0.1.5...
[INFO] building mdbook-protobuf-0.1.5 against try#d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6 for pr-146237-1
[INFO] extracting crate mdbook-protobuf 0.1.5 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate mdbook-protobuf 0.1.5
[INFO] finished tweaking crates.io crate mdbook-protobuf 0.1.5
[INFO] tweaked toml for crates.io crate mdbook-protobuf 0.1.5 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mdbook-protobuf 0.1.5 on toolchain d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate mdbook-protobuf 0.1.5 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" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stdout] 7f946b55239472e54d66acb5b9e3a9b7ae9cbc756564dd9137fa3da4812b19e4
[INFO] running `Command { std: "docker" "start" "-a" "7f946b55239472e54d66acb5b9e3a9b7ae9cbc756564dd9137fa3da4812b19e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f946b55239472e54d66acb5b9e3a9b7ae9cbc756564dd9137fa3da4812b19e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7f946b55239472e54d66acb5b9e3a9b7ae9cbc756564dd9137fa3da4812b19e4", kill_on_drop: false }`
[INFO] [stdout] 7f946b55239472e54d66acb5b9e3a9b7ae9cbc756564dd9137fa3da4812b19e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08da5f99a82cf8eb7ea0bd1691799310f95c03470785bc5ae6410ab8de2d9f4d
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[INFO] [stderr]    Compiling prost-types v0.13.2
[INFO] [stderr]    Compiling toml_edit v0.22.22
[INFO] [stderr]    Compiling warp v0.3.7
[INFO] [stderr]    Compiling mdbook v0.4.40
[INFO] [stderr]    Compiling mdbook-protobuf v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Into`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `askama::filters::format`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use askama::filters::format;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::arg`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use clap::arg;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backlinks` and `ProtoSymbol`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | use links::{Backlinks, ProtoSymbol};
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/lib.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::{debug, info, warn};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::field_descriptor_proto::Type`
[INFO] [stdout]   --> src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use prost_types::field_descriptor_proto::Type;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::source_code_info::Location`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use prost_types::source_code_info::Location;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DescriptorProto`, `EnumDescriptorProto`, `FieldDescriptorProto`, `FileDescriptorProto`, and `ServiceDescriptorProto`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     DescriptorProto, EnumDescriptorProto, FieldDescriptorProto, FileDescriptorProto,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     FileDescriptorSet, ServiceDescriptorProto,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml_edit::Value`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use toml_edit::Value;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `link_type`
[INFO] [stdout]    --> src/links.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   link_type,
[INFO] [stdout]     |                       ^^^^^^^^^ help: try ignoring the field: `link_type: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]    --> src/links.rs:207:30
[INFO] [stdout]     |
[INFO] [stdout] 207 | ...                   title,
[INFO] [stdout]     |                       ^^^^^ help: try ignoring the field: `title: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/links.rs:208:30
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   id
[INFO] [stdout]     |                       ^^ help: try ignoring the field: `id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:666:72
[INFO] [stdout]     |
[INFO] [stdout] 666 |     pub(crate) fn mutate_messages<F>(messages: &mut Vec<ProtoMessage>, mut mutator: F)
[INFO] [stdout]     |                                                                        ----^^^^^^^
[INFO] [stdout]     |                                                                        |
[INFO] [stdout]     |                                                                        help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:676:48
[INFO] [stdout]     |
[INFO] [stdout] 676 |     pub(crate) fn mutate_symbols<F>(&mut self, mut mutator: F)
[INFO] [stdout]     |                                                ----^^^^^^^
[INFO] [stdout]     |                                                |
[INFO] [stdout]     |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:680:13
[INFO] [stdout]     |
[INFO] [stdout] 680 |         for mut file in &mut self.files {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut file = File::open(path).map_err(|e| {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |         .map_err(|e| anyhow!("failed to parse file descriptor set as protobuf"))?;
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:95:72
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let file_descriptor_path = canonicalize(path.clone()).map_err(|e| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut target_chapter = if let Some(nest_under) = &nest_under_path {
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fqsl` is never used
[INFO] [stdout]   --> src/links.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait ProtoSymbol {
[INFO] [stdout]    |                  ----------- method in this trait
[INFO] [stdout] 17 |     fn symbol_link(&self) -> &SymbolLink;
[INFO] [stdout] 18 |     fn fqsl(&self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_column` and `end_column` are never read
[INFO] [stdout]   --> src/view.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Source {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     start_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 23 |     end_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `source` is never read
[INFO] [stdout]    --> src/view.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | struct SimpleField {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 119 |     source: Option<Source>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub(crate) struct ProtoMessage {
[INFO] [stdout]     |                   ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 212 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:389:5
[INFO] [stdout]     |
[INFO] [stdout] 384 | pub(crate) struct Enum {
[INFO] [stdout]     |                   ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 389 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `printed` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |     let mut printed = false;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_printed` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `printed` is never read
[INFO] [stdout]    --> src/main.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |             printed = true;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2m 49s
[INFO] running `Command { std: "docker" "inspect" "08da5f99a82cf8eb7ea0bd1691799310f95c03470785bc5ae6410ab8de2d9f4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08da5f99a82cf8eb7ea0bd1691799310f95c03470785bc5ae6410ab8de2d9f4d", kill_on_drop: false }`
[INFO] [stdout] 08da5f99a82cf8eb7ea0bd1691799310f95c03470785bc5ae6410ab8de2d9f4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+d79d87d4c0f7f0d0785ad6e493cf8cf718ed89a6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8164c7a7a7e72a61d346fc67f58812467c8db4345d4b6d27c5e122439883ecd8
[INFO] running `Command { std: "docker" "start" "-a" "8164c7a7a7e72a61d346fc67f58812467c8db4345d4b6d27c5e122439883ecd8", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Into`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `askama::filters::format`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use askama::filters::format;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::arg`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use clap::arg;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backlinks` and `ProtoSymbol`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | use links::{Backlinks, ProtoSymbol};
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/lib.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::{debug, info, warn};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::field_descriptor_proto::Type`
[INFO] [stdout]   --> src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use prost_types::field_descriptor_proto::Type;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::source_code_info::Location`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use prost_types::source_code_info::Location;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DescriptorProto`, `EnumDescriptorProto`, `FieldDescriptorProto`, `FileDescriptorProto`, and `ServiceDescriptorProto`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     DescriptorProto, EnumDescriptorProto, FieldDescriptorProto, FileDescriptorProto,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     FileDescriptorSet, ServiceDescriptorProto,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml_edit::Value`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use toml_edit::Value;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `link_type`
[INFO] [stdout]    --> src/links.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   link_type,
[INFO] [stdout]     |                       ^^^^^^^^^ help: try ignoring the field: `link_type: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]    --> src/links.rs:207:30
[INFO] [stdout]     |
[INFO] [stdout] 207 | ...                   title,
[INFO] [stdout]     |                       ^^^^^ help: try ignoring the field: `title: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/links.rs:208:30
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   id
[INFO] [stdout]     |                       ^^ help: try ignoring the field: `id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:666:72
[INFO] [stdout]     |
[INFO] [stdout] 666 |     pub(crate) fn mutate_messages<F>(messages: &mut Vec<ProtoMessage>, mut mutator: F)
[INFO] [stdout]     |                                                                        ----^^^^^^^
[INFO] [stdout]     |                                                                        |
[INFO] [stdout]     |                                                                        help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:676:48
[INFO] [stdout]     |
[INFO] [stdout] 676 |     pub(crate) fn mutate_symbols<F>(&mut self, mut mutator: F)
[INFO] [stdout]     |                                                ----^^^^^^^
[INFO] [stdout]     |                                                |
[INFO] [stdout]     |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:680:13
[INFO] [stdout]     |
[INFO] [stdout] 680 |         for mut file in &mut self.files {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut file = File::open(path).map_err(|e| {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |         .map_err(|e| anyhow!("failed to parse file descriptor set as protobuf"))?;
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:95:72
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let file_descriptor_path = canonicalize(path.clone()).map_err(|e| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut target_chapter = if let Some(nest_under) = &nest_under_path {
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fqsl` is never used
[INFO] [stdout]   --> src/links.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait ProtoSymbol {
[INFO] [stdout]    |                  ----------- method in this trait
[INFO] [stdout] 17 |     fn symbol_link(&self) -> &SymbolLink;
[INFO] [stdout] 18 |     fn fqsl(&self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_column` and `end_column` are never read
[INFO] [stdout]   --> src/view.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Source {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     start_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 23 |     end_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `source` is never read
[INFO] [stdout]    --> src/view.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | struct SimpleField {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 119 |     source: Option<Source>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub(crate) struct ProtoMessage {
[INFO] [stdout]     |                   ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 212 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:389:5
[INFO] [stdout]     |
[INFO] [stdout] 384 | pub(crate) struct Enum {
[INFO] [stdout]     |                   ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 389 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling mdbook-protobuf v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable `printed` is assigned to, but never used
[INFO] [stdout]    --> src/main.rs:191:13
[INFO] [stdout]     |
[INFO] [stdout] 191 |     let mut printed = false;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: consider using `_printed` instead
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `printed` is never read
[INFO] [stdout]    --> src/main.rs:203:13
[INFO] [stdout]     |
[INFO] [stdout] 203 |             printed = true;
[INFO] [stdout]     |             ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::any::Any`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::any::Any;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::Into`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::convert::Into;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `askama::filters::format`
[INFO] [stdout]   --> src/lib.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | use askama::filters::format;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `clap::arg`
[INFO] [stdout]   --> src/lib.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | use clap::arg;
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Backlinks` and `ProtoSymbol`
[INFO] [stdout]   --> src/lib.rs:15:13
[INFO] [stdout]    |
[INFO] [stdout] 15 | use links::{Backlinks, ProtoSymbol};
[INFO] [stdout]    |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `debug`
[INFO] [stdout]   --> src/lib.rs:16:11
[INFO] [stdout]    |
[INFO] [stdout] 16 | use log::{debug, info, warn};
[INFO] [stdout]    |           ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::field_descriptor_proto::Type`
[INFO] [stdout]   --> src/lib.rs:21:5
[INFO] [stdout]    |
[INFO] [stdout] 21 | use prost_types::field_descriptor_proto::Type;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `prost_types::source_code_info::Location`
[INFO] [stdout]   --> src/lib.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | use prost_types::source_code_info::Location;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `DescriptorProto`, `EnumDescriptorProto`, `FieldDescriptorProto`, `FileDescriptorProto`, and `ServiceDescriptorProto`
[INFO] [stdout]   --> src/lib.rs:24:5
[INFO] [stdout]    |
[INFO] [stdout] 24 |     DescriptorProto, EnumDescriptorProto, FieldDescriptorProto, FileDescriptorProto,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 25 |     FileDescriptorSet, ServiceDescriptorProto,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `toml_edit::Value`
[INFO] [stdout]   --> src/lib.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 | use toml_edit::Value;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `link_type`
[INFO] [stdout]    --> src/links.rs:205:30
[INFO] [stdout]     |
[INFO] [stdout] 205 | ...                   link_type,
[INFO] [stdout]     |                       ^^^^^^^^^ help: try ignoring the field: `link_type: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `title`
[INFO] [stdout]    --> src/links.rs:207:30
[INFO] [stdout]     |
[INFO] [stdout] 207 | ...                   title,
[INFO] [stdout]     |                       ^^^^^ help: try ignoring the field: `title: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/links.rs:208:30
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   id
[INFO] [stdout]     |                       ^^ help: try ignoring the field: `id: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:40:46
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut file = File::open(path).map_err(|e| {
[INFO] [stdout]    |                                              ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:55:19
[INFO] [stdout]    |
[INFO] [stdout] 55 |         .map_err(|e| anyhow!("failed to parse file descriptor set as protobuf"))?;
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:666:72
[INFO] [stdout]     |
[INFO] [stdout] 666 |     pub(crate) fn mutate_messages<F>(messages: &mut Vec<ProtoMessage>, mut mutator: F)
[INFO] [stdout]     |                                                                        ----^^^^^^^
[INFO] [stdout]     |                                                                        |
[INFO] [stdout]     |                                                                        help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:676:48
[INFO] [stdout]     |
[INFO] [stdout] 676 |     pub(crate) fn mutate_symbols<F>(&mut self, mut mutator: F)
[INFO] [stdout]     |                                                ----^^^^^^^
[INFO] [stdout]     |                                                |
[INFO] [stdout]     |                                                help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/view.rs:680:13
[INFO] [stdout]     |
[INFO] [stdout] 680 |         for mut file in &mut self.files {
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/lib.rs:95:72
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let file_descriptor_path = canonicalize(path.clone()).map_err(|e| {
[INFO] [stdout]    |                                                                        ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:195:13
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let mut target_chapter = if let Some(nest_under) = &nest_under_path {
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected_book`
[INFO] [stdout]    --> src/lib.rs:318:13
[INFO] [stdout]     |
[INFO] [stdout] 318 |         let expected_book = book.clone();
[INFO] [stdout]     |             ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_expected_book`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `fqsl` is never used
[INFO] [stdout]   --> src/links.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub(crate) trait ProtoSymbol {
[INFO] [stdout]    |                  ----------- method in this trait
[INFO] [stdout] 17 |     fn symbol_link(&self) -> &SymbolLink;
[INFO] [stdout] 18 |     fn fqsl(&self) -> String {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_column` and `end_column` are never read
[INFO] [stdout]   --> src/view.rs:22:5
[INFO] [stdout]    |
[INFO] [stdout] 19 | struct Source {
[INFO] [stdout]    |        ------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 22 |     start_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^^^
[INFO] [stdout] 23 |     end_column: i32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `source` is never read
[INFO] [stdout]    --> src/view.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 116 | struct SimpleField {
[INFO] [stdout]     |        ----------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 119 |     source: Option<Source>,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:212:5
[INFO] [stdout]     |
[INFO] [stdout] 205 | pub(crate) struct ProtoMessage {
[INFO] [stdout]     |                   ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 212 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `namespace` is never read
[INFO] [stdout]    --> src/view.rs:389:5
[INFO] [stdout]     |
[INFO] [stdout] 384 | pub(crate) struct Enum {
[INFO] [stdout]     |                   ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 389 |     namespace: Vec<String>,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 4.24s
[INFO] running `Command { std: "docker" "inspect" "8164c7a7a7e72a61d346fc67f58812467c8db4345d4b6d27c5e122439883ecd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8164c7a7a7e72a61d346fc67f58812467c8db4345d4b6d27c5e122439883ecd8", kill_on_drop: false }`
[INFO] [stdout] 8164c7a7a7e72a61d346fc67f58812467c8db4345d4b6d27c5e122439883ecd8
