[INFO] cloning repository https://github.com/Wollaston/pdf_exploration
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Wollaston/pdf_exploration" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWollaston%2Fpdf_exploration", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWollaston%2Fpdf_exploration'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 01c2f91dc94259cf973a1d353d7dbe370c172d05
[INFO] checking Wollaston/pdf_exploration against master#9e293ae9f8abecb0be5105787d181518c9012a19 for pr-146440-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FWollaston%2Fpdf_exploration" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Wollaston/pdf_exploration
[INFO] finished tweaking git repo https://github.com/Wollaston/pdf_exploration
[INFO] tweaked toml for git repo https://github.com/Wollaston/pdf_exploration written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Wollaston/pdf_exploration on toolchain 9e293ae9f8abecb0be5105787d181518c9012a19
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 13 packages to latest compatible versions
[INFO] [stderr]       Adding nom v7.1.3 (available: v8.0.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c92340e8e3330003bc10e5c33e1e76d1c29d9e71589fee44f95eaaccf115bb1a
[INFO] running `Command { std: "docker" "start" "-a" "c92340e8e3330003bc10e5c33e1e76d1c29d9e71589fee44f95eaaccf115bb1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c92340e8e3330003bc10e5c33e1e76d1c29d9e71589fee44f95eaaccf115bb1a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c92340e8e3330003bc10e5c33e1e76d1c29d9e71589fee44f95eaaccf115bb1a", kill_on_drop: false }`
[INFO] [stdout] c92340e8e3330003bc10e5c33e1e76d1c29d9e71589fee44f95eaaccf115bb1a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+9e293ae9f8abecb0be5105787d181518c9012a19" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e3526bed16f8d8985bb75d2d94a8e3223a74e0db05c2ebe7955728c2cb27c14
[INFO] running `Command { std: "docker" "start" "-a" "6e3526bed16f8d8985bb75d2d94a8e3223a74e0db05c2ebe7955728c2cb27c14", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.8.1
[INFO] [stderr]     Checking regex-automata v0.4.14
[INFO] [stderr]     Checking nom v7.1.3
[INFO] [stderr]     Checking aho-corasick v1.1.4
[INFO] [stderr]     Checking bstr v1.12.1
[INFO] [stderr]     Checking pdf v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `terminated`
[INFO] [stdout]  --> src/api/read/trailer.rs:7:48
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nom::sequence::{delimited, separated_pair, terminated, tuple};
[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 imports: `IResult`, `branch::alt`, `bytes::complete::tag`, and `sequence::tuple`
[INFO] [stdout]  --> src/api/utils.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nom::{branch::alt, bytes::complete::tag, sequence::tuple, IResult};
[INFO] [stdout]   |           ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `terminated`
[INFO] [stdout]  --> src/api/read/trailer.rs:7:48
[INFO] [stdout]   |
[INFO] [stdout] 7 | use nom::sequence::{delimited, separated_pair, terminated, tuple};
[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 imports: `IResult`, `branch::alt`, `bytes::complete::tag`, and `sequence::tuple`
[INFO] [stdout]  --> src/api/utils.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | use nom::{branch::alt, bytes::complete::tag, sequence::tuple, IResult};
[INFO] [stdout]   |           ^^^^^^^^^^^  ^^^^^^^^^^^^^^^^^^^^  ^^^^^^^^^^^^^^^  ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `bstr::ByteSlice`
[INFO] [stdout]  --> src/api/read/header.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use bstr::ByteSlice;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_active`
[INFO] [stdout]    --> src/api/read/cross_ref_table.rs:108:42
[INFO] [stdout]     |
[INFO] [stdout] 108 |         |(byte_offset, _, gen_number, _, is_active, _, _)| SubsectionEntry {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_active`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_active`
[INFO] [stdout]    --> src/api/read/cross_ref_table.rs:108:42
[INFO] [stdout]     |
[INFO] [stdout] 108 |         |(byte_offset, _, gen_number, _, is_active, _, _)| SubsectionEntry {
[INFO] [stdout]     |                                          ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_active`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> src/api/read/objects.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn read_objects(data: &[u8], objects: Vec<(usize, usize)>) {
[INFO] [stdout]   |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `data`
[INFO] [stdout]  --> src/api/read/objects.rs:3:21
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub fn read_objects(data: &[u8], objects: Vec<(usize, usize)>) {
[INFO] [stdout]   |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_data`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Character` is never used
[INFO] [stdout]   --> src/api/characters.rs:14:7
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait Character {
[INFO] [stdout]    |       ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `CharacterClass` is never used
[INFO] [stdout]   --> src/api/characters.rs:26:6
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum CharacterClass {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `WhiteSpaceCharacter` is never used
[INFO] [stdout]   --> src/api/characters.rs:35:6
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum WhiteSpaceCharacter {
[INFO] [stdout]    |      ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header`, `body`, `cross_ref_table`, and `trailer` are never read
[INFO] [stdout]   --> src/api/structure.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct PDF {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 34 |     header: Header,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 35 |     body: Body,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 36 |     cross_ref_table: CrossRefTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 37 |     trailer: Trailer,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PDF` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `objects` is never read
[INFO] [stdout]   --> src/api/structure.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct Body {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 71 |     objects: Vec<Object>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Body` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `entries` is never read
[INFO] [stdout]    --> src/api/structure.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct Trailer {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 102 |     entries: Vec<(TrailerKey, String)>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Trailer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `name` and `decimal` are never used
[INFO] [stdout]   --> src/api/characters.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 14 | trait Character {
[INFO] [stdout]    |       --------- methods in this trait
[INFO] [stdout] 15 |     fn name(&self) -> &'static str;
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 16 |     fn decimal(&self) -> i32;
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Regular` and `Delimiter` are never constructed
[INFO] [stdout]   --> src/api/characters.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | enum CharacterClass {
[INFO] [stdout]    |      -------------- variants in this enum
[INFO] [stdout] 27 |     Regular,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 28 |     Delimiter,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CharacterClass` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `HorizontalTab`, `LineFeed`, `FormFeed`, `CarriageReturn`, and `Space` are never constructed
[INFO] [stdout]   --> src/api/characters.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 35 | enum WhiteSpaceCharacter {
[INFO] [stdout]    |      ------------------- variants in this enum
[INFO] [stdout] 36 |     Null,
[INFO] [stdout] 37 |     HorizontalTab,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout] 38 |     LineFeed,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 39 |     FormFeed,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 40 |     CarriageReturn,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 41 |     Space,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `WhiteSpaceCharacter` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `header`, `body`, `cross_ref_table`, and `trailer` are never read
[INFO] [stdout]   --> src/api/structure.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 33 | pub struct PDF {
[INFO] [stdout]    |            --- fields in this struct
[INFO] [stdout] 34 |     header: Header,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 35 |     body: Body,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 36 |     cross_ref_table: CrossRefTable,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 37 |     trailer: Trailer,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `PDF` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `objects` is never read
[INFO] [stdout]   --> src/api/structure.rs:71:5
[INFO] [stdout]    |
[INFO] [stdout] 70 | pub struct Body {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 71 |     objects: Vec<Object>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Body` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `entries` is never read
[INFO] [stdout]    --> src/api/structure.rs:102:5
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct Trailer {
[INFO] [stdout]     |            ------- field in this struct
[INFO] [stdout] 102 |     entries: Vec<(TrailerKey, String)>,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Trailer` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     header::read_header(&data);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let _ = header::read_header(&data);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     cross_ref_table::read_cross_ref_table(&data, xref_offset[0]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let _ = cross_ref_table::read_cross_ref_table(&data, xref_offset[0]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     trailer::read_trailer(&data, trailer_offset[0]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let _ = trailer::read_trailer(&data, trailer_offset[0]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:54:5
[INFO] [stdout]    |
[INFO] [stdout] 54 |     header::read_header(&data);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let _ = header::read_header(&data);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:55:5
[INFO] [stdout]    |
[INFO] [stdout] 55 |     cross_ref_table::read_cross_ref_table(&data, xref_offset[0]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let _ = cross_ref_table::read_cross_ref_table(&data, xref_offset[0]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:56:5
[INFO] [stdout]    |
[INFO] [stdout] 56 |     trailer::read_trailer(&data, trailer_offset[0]);
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 56 |     let _ = trailer::read_trailer(&data, trailer_offset[0]);
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/api/read.rs:70:9
[INFO] [stdout]    |
[INFO] [stdout] 70 |         read_file("HelloWorld.pdf");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let _ = read_file("HelloWorld.pdf");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.49s
[INFO] running `Command { std: "docker" "inspect" "6e3526bed16f8d8985bb75d2d94a8e3223a74e0db05c2ebe7955728c2cb27c14", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e3526bed16f8d8985bb75d2d94a8e3223a74e0db05c2ebe7955728c2cb27c14", kill_on_drop: false }`
[INFO] [stdout] 6e3526bed16f8d8985bb75d2d94a8e3223a74e0db05c2ebe7955728c2cb27c14
