[INFO] cloning repository https://github.com/KartikAiyer/media_atoms
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/KartikAiyer/media_atoms" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKartikAiyer%2Fmedia_atoms", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKartikAiyer%2Fmedia_atoms'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 47f25ad44e6813e899a0a4fd90bdba6f60df961b
[INFO] checking KartikAiyer/media_atoms against 5c543b0b8c73c7b72bc8284ced4fb22ead15734d for pr-160186
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKartikAiyer%2Fmedia_atoms" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/KartikAiyer/media_atoms
[INFO] finished tweaking git repo https://github.com/KartikAiyer/media_atoms
[INFO] tweaked toml for git repo https://github.com/KartikAiyer/media_atoms written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/KartikAiyer/media_atoms on toolchain 5c543b0b8c73c7b72bc8284ced4fb22ead15734d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/KartikAiyer/media_atoms 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" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643
[INFO] running `Command { std: "docker" "start" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643" "/opt/rustwide/cargo-home/bin/cargo" "+5c543b0b8c73c7b72bc8284ced4fb22ead15734d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking media_atoms v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `containers::ContainerAtoms`
[INFO] [stdout]  --> src/parse_state.rs:4:53
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::atoms::{AtomLike, AtomHeader, AtomNodes, containers::ContainerAtoms};
[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: `Read`
[INFO] [stdout]  --> src/parse_state.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Read, SeekFrom, Seek};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow`
[INFO] [stdout]  --> src/parse_state.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/parse_state.rs:81:52
[INFO] [stdout]    |
[INFO] [stdout] 81 |             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stdout]    |                                                    ^             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 81 -             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stdout] 81 +             retval = print_tree(f, child, depth+1, stuff == size);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs`
[INFO] [stdout]  --> src/atoms.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fs;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `containers::ContainerAtoms`
[INFO] [stdout]  --> src/parse_state.rs:4:53
[INFO] [stdout]   |
[INFO] [stdout] 4 | use super::atoms::{AtomLike, AtomHeader, AtomNodes, containers::ContainerAtoms};
[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: `Read`
[INFO] [stdout]  --> src/parse_state.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::io::{Read, SeekFrom, Seek};
[INFO] [stdout]   |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `BorrowMut` and `Borrow`
[INFO] [stdout]  --> src/parse_state.rs:6:19
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stdout]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]   --> src/parse_state.rs:81:52
[INFO] [stdout]    |
[INFO] [stdout] 81 |             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stdout]    |                                                    ^             ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 81 -             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stdout] 81 +             retval = print_tree(f, child, depth+1, stuff == size);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:72:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |       let mut retval = Ok(());
[INFO] [stdout]    |                        ^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ------------------------------------------------------ `retval` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:75:11
[INFO] [stdout]    |
[INFO] [stdout] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 76 |           retval = writeln!(f, "{} {}", prefix, AtomHeader::new_from(atom));
[INFO] [stdout]    |           ----------------------------------------------------------------- `retval` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom`
[INFO] [stdout]    --> src/atoms.rs:292:30
[INFO] [stdout]     |
[INFO] [stdout] 292 |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/atoms.rs:393:11
[INFO] [stdout]     |
[INFO] [stdout] 393 |       let mut location = atom_header.atom_location() + atom_header.header_size() as u64;
[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/atoms.rs:592:11
[INFO] [stdout]     |
[INFO] [stdout] 592 |       let mut buf = atom_header.read_atom(file)?;
[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/atoms.rs:739:11
[INFO] [stdout]     |
[INFO] [stdout] 739 |       let mut bytes = header.read_atom(file)?;
[INFO] [stdout]     |           ----^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/atoms.rs:746:11
[INFO] [stdout]     |
[INFO] [stdout] 746 |       for i in 0..result.num_features {
[INFO] [stdout]     |           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `filename` is never read
[INFO] [stdout]    --> src/parse_state.rs:147:3
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub struct Parser {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 147 |   filename: 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: struct `TkhdAtom` is never constructed
[INFO] [stdout]    --> src/atoms.rs:928:10
[INFO] [stdout]     |
[INFO] [stdout] 928 |   struct TkhdAtom {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parse_state.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 |     self.file.seek(SeekFrom::Start(0));
[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] 171 |     let _ = self.file.seek(SeekFrom::Start(0));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:291:7
[INFO] [stdout]     |
[INFO] [stdout] 291 | /       match self {
[INFO] [stdout] 292 | |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stdout] 293 | |         ContainerAtoms::Moov(atom) => writeln!(f, "{}", atom),
[INFO] [stdout] 294 | |         ContainerAtoms::Trak(atom) => writeln!(f, "{}", atom),
[INFO] [stdout] 295 | |       };
[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] 291 |       let _ = match self {
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:335:7
[INFO] [stdout]     |
[INFO] [stdout] 335 |       file.seek(SeekFrom::Start(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] 335 |       let _ = file.seek(SeekFrom::Start(0));
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:554:11
[INFO] [stdout]     |
[INFO] [stdout] 554 |           write!(f, "{}", atom);
[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] 554 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:558:11
[INFO] [stdout]     |
[INFO] [stdout] 558 |           write!(f, "{}", atom);
[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] 558 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:562:11
[INFO] [stdout]     |
[INFO] [stdout] 562 |           write!(f, "{}", atom);
[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] 562 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:566:11
[INFO] [stdout]     |
[INFO] [stdout] 566 |           write!(f, "{}", atom);
[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] 566 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:570:11
[INFO] [stdout]     |
[INFO] [stdout] 570 |           write!(f, "{}", atom);
[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] 570 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:670:7
[INFO] [stdout]     |
[INFO] [stdout] 670 |       write!(f, "Wide: {}", self.atom_header);
[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] 670 |       let _ = write!(f, "Wide: {}", self.atom_header);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:743:7
[INFO] [stdout]     |
[INFO] [stdout] 743 |       bytes.read(&mut tmp);
[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] 743 |       let _ = bytes.read(&mut tmp);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:852:7
[INFO] [stdout]     |
[INFO] [stdout] 852 |       file.read(&mut result.matrix);
[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] 852 |       let _ = file.read(&mut result.matrix);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:72:24
[INFO] [stdout]    |
[INFO] [stdout] 72 |       let mut retval = Ok(());
[INFO] [stdout]    |                        ^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ------------------------------------------------------ `retval` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:75:11
[INFO] [stdout]    |
[INFO] [stdout] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] 76 |           retval = writeln!(f, "{} {}", prefix, AtomHeader::new_from(atom));
[INFO] [stdout]    |           ----------------------------------------------------------------- `retval` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom`
[INFO] [stdout]    --> src/atoms.rs:292:30
[INFO] [stdout]     |
[INFO] [stdout] 292 |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stdout]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/atoms.rs:393:11
[INFO] [stdout]     |
[INFO] [stdout] 393 |       let mut location = atom_header.atom_location() + atom_header.header_size() as u64;
[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/atoms.rs:592:11
[INFO] [stdout]     |
[INFO] [stdout] 592 |       let mut buf = atom_header.read_atom(file)?;
[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/atoms.rs:739:11
[INFO] [stdout]     |
[INFO] [stdout] 739 |       let mut bytes = header.read_atom(file)?;
[INFO] [stdout]     |           ----^^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/atoms.rs:746:11
[INFO] [stdout]     |
[INFO] [stdout] 746 |       for i in 0..result.num_features {
[INFO] [stdout]     |           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `filename` is never read
[INFO] [stdout]    --> src/parse_state.rs:147:3
[INFO] [stdout]     |
[INFO] [stdout] 146 | pub struct Parser {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] 147 |   filename: 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: struct `TkhdAtom` is never constructed
[INFO] [stdout]    --> src/atoms.rs:928:10
[INFO] [stdout]     |
[INFO] [stdout] 928 |   struct TkhdAtom {
[INFO] [stdout]     |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/parse_state.rs:171:5
[INFO] [stdout]     |
[INFO] [stdout] 171 |     self.file.seek(SeekFrom::Start(0));
[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] 171 |     let _ = self.file.seek(SeekFrom::Start(0));
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:291:7
[INFO] [stdout]     |
[INFO] [stdout] 291 | /       match self {
[INFO] [stdout] 292 | |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stdout] 293 | |         ContainerAtoms::Moov(atom) => writeln!(f, "{}", atom),
[INFO] [stdout] 294 | |         ContainerAtoms::Trak(atom) => writeln!(f, "{}", atom),
[INFO] [stdout] 295 | |       };
[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] 291 |       let _ = match self {
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:335:7
[INFO] [stdout]     |
[INFO] [stdout] 335 |       file.seek(SeekFrom::Start(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] 335 |       let _ = file.seek(SeekFrom::Start(0));
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:554:11
[INFO] [stdout]     |
[INFO] [stdout] 554 |           write!(f, "{}", atom);
[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] 554 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:558:11
[INFO] [stdout]     |
[INFO] [stdout] 558 |           write!(f, "{}", atom);
[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] 558 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:562:11
[INFO] [stdout]     |
[INFO] [stdout] 562 |           write!(f, "{}", atom);
[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] 562 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:566:11
[INFO] [stdout]     |
[INFO] [stdout] 566 |           write!(f, "{}", atom);
[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] 566 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:570:11
[INFO] [stdout]     |
[INFO] [stdout] 570 |           write!(f, "{}", atom);
[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] 570 |           let _ = write!(f, "{}", atom);
[INFO] [stdout]     |           +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:670:7
[INFO] [stdout]     |
[INFO] [stdout] 670 |       write!(f, "Wide: {}", self.atom_header);
[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] 670 |       let _ = write!(f, "Wide: {}", self.atom_header);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:743:7
[INFO] [stdout]     |
[INFO] [stdout] 743 |       bytes.read(&mut tmp);
[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] 743 |       let _ = bytes.read(&mut tmp);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/atoms.rs:852:7
[INFO] [stdout]     |
[INFO] [stdout] 852 |       file.read(&mut result.matrix);
[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] 852 |       let _ = file.read(&mut result.matrix);
[INFO] [stdout]     |       +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |   if( args.len() != 2) {
[INFO] [stdout]   |     ^^               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -   if( args.len() != 2) {
[INFO] [stdout] 9 +   if args.len() != 2 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]  --> src/main.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |   if( args.len() != 2) {
[INFO] [stdout]   |     ^^               ^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout] 9 -   if( args.len() != 2) {
[INFO] [stdout] 9 +   if args.len() != 2 {
[INFO] [stdout]   |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.85s
[INFO] running `Command { std: "docker" "inspect" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643", kill_on_drop: false }`
[INFO] [stdout] 1f7bca81d8cc5d1d43f2744a5060dd983f8515b8f307fce9f1b96cf406f14643
