[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] testing KartikAiyer/media_atoms against master#8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKartikAiyer%2Fmedia_atoms" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/KartikAiyer/media_atoms on toolchain 8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-7/source/Cargo.toml
[INFO] crate git repo https://github.com/KartikAiyer/media_atoms already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 203477b6adf9d0ecb19b02f320ec1ef137e1f61c4e57f3cd551ce0d14bce7605
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "203477b6adf9d0ecb19b02f320ec1ef137e1f61c4e57f3cd551ce0d14bce7605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "203477b6adf9d0ecb19b02f320ec1ef137e1f61c4e57f3cd551ce0d14bce7605", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "203477b6adf9d0ecb19b02f320ec1ef137e1f61c4e57f3cd551ce0d14bce7605", kill_on_drop: false }`
[INFO] [stdout] 203477b6adf9d0ecb19b02f320ec1ef137e1f61c4e57f3cd551ce0d14bce7605
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79c8c54c0a57d5a69c6e19df8bce48e3ea3a035a48c322d610964414b919a62e
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "79c8c54c0a57d5a69c6e19df8bce48e3ea3a035a48c322d610964414b919a62e", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` 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`, `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]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[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: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 |       let mut retval = Ok(());
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |           retval = write!(f, "{:width$}", "", 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)]` on by default
[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: 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)]` 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: field is never read: `filename`
[INFO] [stdout]    --> src/parse_state.rs:147:3
[INFO] [stdout]     |
[INFO] [stdout] 147 |   filename: String,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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] 
[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] 
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[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]   |     ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "79c8c54c0a57d5a69c6e19df8bce48e3ea3a035a48c322d610964414b919a62e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79c8c54c0a57d5a69c6e19df8bce48e3ea3a035a48c322d610964414b919a62e", kill_on_drop: false }`
[INFO] [stdout] 79c8c54c0a57d5a69c6e19df8bce48e3ea3a035a48c322d610964414b919a62e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 1e163045fac7652a3a7e41d711c23d7d19c93ca57be26382afdb39e0de1d1531
[INFO] running `Command { std: "docker" "start" "-a" "1e163045fac7652a3a7e41d711c23d7d19c93ca57be26382afdb39e0de1d1531", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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)]` 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`, `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]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[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: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 |       let mut retval = Ok(());
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |           retval = write!(f, "{:width$}", "", 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)]` on by default
[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: 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)]` 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: field is never read: `filename`
[INFO] [stdout]    --> src/parse_state.rs:147:3
[INFO] [stdout]     |
[INFO] [stdout] 147 |   filename: String,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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] 
[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] 
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 25 warnings emitted
[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]   |     ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_parens)]` on by default
[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)]` 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`, `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]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:72:11
[INFO] [stdout]    |
[INFO] [stdout] 72 |       let mut retval = Ok(());
[INFO] [stdout]    |           ^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[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$}", "", width = (2*depth));
[INFO] [stdout]    |           ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `retval` is never read
[INFO] [stdout]   --> src/parse_state.rs:86:11
[INFO] [stdout]    |
[INFO] [stdout] 86 |           retval = write!(f, "{:width$}", "", 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)]` on by default
[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: 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)]` 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: field is never read: `filename`
[INFO] [stdout]    --> src/parse_state.rs:147:3
[INFO] [stdout]     |
[INFO] [stdout] 147 |   filename: String,
[INFO] [stdout]     |   ^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[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: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[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] 
[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] 
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[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] 
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: 24 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "1e163045fac7652a3a7e41d711c23d7d19c93ca57be26382afdb39e0de1d1531", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e163045fac7652a3a7e41d711c23d7d19c93ca57be26382afdb39e0de1d1531", kill_on_drop: false }`
[INFO] [stdout] 1e163045fac7652a3a7e41d711c23d7d19c93ca57be26382afdb39e0de1d1531
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+8534be72fc3b9c5f2f2dc4e4ee7b651a008e9a3e" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fcd0a66432f938887dc2784bebce7caed0fada1357750996369f49fc7c929161
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "fcd0a66432f938887dc2784bebce7caed0fada1357750996369f49fc7c929161", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `containers::ContainerAtoms`
[INFO] [stderr]  --> src/parse_state.rs:4:53
[INFO] [stderr]   |
[INFO] [stderr] 4 | use super::atoms::{AtomLike, AtomHeader, AtomNodes, containers::ContainerAtoms};
[INFO] [stderr]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/parse_state.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{Read, SeekFrom, Seek};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/parse_state.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `containers::ContainerAtoms`
[INFO] [stderr]  --> src/parse_state.rs:4:53
[INFO] [stderr]   |
[INFO] [stderr] 4 | use super::atoms::{AtomLike, AtomHeader, AtomNodes, containers::ContainerAtoms};
[INFO] [stderr]   |                                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Read`
[INFO] [stderr]  --> src/parse_state.rs:5:15
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::io::{Read, SeekFrom, Seek};
[INFO] [stderr]   |               ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/parse_state.rs:81:52
[INFO] [stderr]    |
[INFO] [stderr] 81 |             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `BorrowMut`, `Borrow`
[INFO] [stderr]  --> src/parse_state.rs:6:19
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::borrow::{BorrowMut, Borrow};
[INFO] [stderr]   |                   ^^^^^^^^^  ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/atoms.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:72:11
[INFO] [stderr]    |
[INFO] [stderr] 72 |       let mut retval = Ok(());
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> src/parse_state.rs:81:52
[INFO] [stderr]    |
[INFO] [stderr] 81 |             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:75:11
[INFO] [stderr]    |
[INFO] [stderr] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:72:11
[INFO] [stderr]    |
[INFO] [stderr] 72 |       let mut retval = Ok(());
[INFO] [stderr]    |           ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:86:11
[INFO] [stderr]    |
[INFO] [stderr] 86 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `atom`
[INFO] [stderr]    --> src/atoms.rs:292:30
[INFO] [stderr]     |
[INFO] [stderr] 292 |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:75:11
[INFO] [stderr]    |
[INFO] [stderr] 75 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/atoms.rs:746:11
[INFO] [stderr]     |
[INFO] [stderr] 746 |       for i in 0..result.num_features {
[INFO] [stderr]     |           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `retval` is never read
[INFO] [stderr]   --> src/parse_state.rs:86:11
[INFO] [stderr]    |
[INFO] [stderr] 86 |           retval = write!(f, "{:width$}", "", width = (2*depth));
[INFO] [stderr]    |           ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:393:11
[INFO] [stderr]     |
[INFO] [stderr] 393 |       let mut location = atom_header.atom_location() + atom_header.header_size() as u64;
[INFO] [stderr]     |           ----^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:592:11
[INFO] [stderr]     |
[INFO] [stderr] 592 |       let mut buf = atom_header.read_atom(file)?;
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:739:11
[INFO] [stderr]     |
[INFO] [stderr] 739 |       let mut bytes = header.read_atom(file)?;
[INFO] [stderr]     |           ----^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `atom`
[INFO] [stderr]    --> src/atoms.rs:292:30
[INFO] [stderr]     |
[INFO] [stderr] 292 |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stderr]     |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `filename`
[INFO] [stderr]    --> src/parse_state.rs:147:3
[INFO] [stderr]     |
[INFO] [stderr] 147 |   filename: String,
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/atoms.rs:746:11
[INFO] [stderr]     |
[INFO] [stderr] 746 |       for i in 0..result.num_features {
[INFO] [stderr]     |           ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/parse_state.rs:171:5
[INFO] [stderr]     |
[INFO] [stderr] 171 |     self.file.seek(SeekFrom::Start(0));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:393:11
[INFO] [stderr]     |
[INFO] [stderr] 393 |       let mut location = atom_header.atom_location() + atom_header.header_size() as u64;
[INFO] [stderr]     |           ----^^^^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:592:11
[INFO] [stderr]     |
[INFO] [stderr] 592 |       let mut buf = atom_header.read_atom(file)?;
[INFO] [stderr]     |           ----^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:291:7
[INFO] [stderr]     |
[INFO] [stderr] 291 | /       match self {
[INFO] [stderr] 292 | |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stderr] 293 | |         ContainerAtoms::Moov(atom) => writeln!(f, "{}", atom),
[INFO] [stderr] 294 | |         ContainerAtoms::Trak(atom) => writeln!(f, "{}", atom),
[INFO] [stderr] 295 | |       };
[INFO] [stderr]     | |________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:335:7
[INFO] [stderr]     |
[INFO] [stderr] 335 |       file.seek(SeekFrom::Start(0));
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/atoms.rs:739:11
[INFO] [stderr]     |
[INFO] [stderr] 739 |       let mut bytes = header.read_atom(file)?;
[INFO] [stderr]     |           ----^^^^^
[INFO] [stderr]     |           |
[INFO] [stderr]     |           help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `filename`
[INFO] [stderr]    --> src/parse_state.rs:147:3
[INFO] [stderr]     |
[INFO] [stderr] 147 |   filename: String,
[INFO] [stderr]     |   ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:554:11
[INFO] [stderr]     |
[INFO] [stderr] 554 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:558:11
[INFO] [stderr]     |
[INFO] [stderr] 558 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/parse_state.rs:171:5
[INFO] [stderr]     |
[INFO] [stderr] 171 |     self.file.seek(SeekFrom::Start(0));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:562:11
[INFO] [stderr]     |
[INFO] [stderr] 562 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:566:11
[INFO] [stderr]     |
[INFO] [stderr] 566 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:291:7
[INFO] [stderr]     |
[INFO] [stderr] 291 | /       match self {
[INFO] [stderr] 292 | |         ContainerAtoms::Root(atom) => writeln!(f, "/" ),
[INFO] [stderr] 293 | |         ContainerAtoms::Moov(atom) => writeln!(f, "{}", atom),
[INFO] [stderr] 294 | |         ContainerAtoms::Trak(atom) => writeln!(f, "{}", atom),
[INFO] [stderr] 295 | |       };
[INFO] [stderr]     | |________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:570:11
[INFO] [stderr]     |
[INFO] [stderr] 570 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:335:7
[INFO] [stderr]     |
[INFO] [stderr] 335 |       file.seek(SeekFrom::Start(0));
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:670:7
[INFO] [stderr]     |
[INFO] [stderr] 670 |       write!(f, "Wide: {}", self.atom_header);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:554:11
[INFO] [stderr]     |
[INFO] [stderr] 554 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:743:7
[INFO] [stderr]     |
[INFO] [stderr] 743 |       bytes.read(&mut tmp);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:558:11
[INFO] [stderr]     |
[INFO] [stderr] 558 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:852:7
[INFO] [stderr]     |
[INFO] [stderr] 852 |       file.read(&mut result.matrix);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 25 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:562:11
[INFO] [stderr]     |
[INFO] [stderr] 562 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:566:11
[INFO] [stderr]     |
[INFO] [stderr] 566 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:570:11
[INFO] [stderr]     |
[INFO] [stderr] 570 |           write!(f, "{}", atom);
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:670:7
[INFO] [stderr]     |
[INFO] [stderr] 670 |       write!(f, "Wide: {}", self.atom_header);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:743:7
[INFO] [stderr]     |
[INFO] [stderr] 743 |       bytes.read(&mut tmp);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/atoms.rs:852:7
[INFO] [stderr]     |
[INFO] [stderr] 852 |       file.read(&mut result.matrix);
[INFO] [stderr]     |       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: 24 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]  --> src/main.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |   if( args.len() != 2) {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/media_atoms-6d5210f0ba32dc3e
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test atoms::containers::can_parse_a_moov_atom ... ok
[INFO] [stdout] test atoms::containers::test_container ... ok
[INFO] [stdout] test atoms::leaves::test_read_of_ftyp ... ok
[INFO] [stdout] test atoms::should_parse_a_header ... ok
[INFO] [stdout] test parse_state::tests::fails_on_a_non_existant_file ... ok
[INFO] [stdout] test parse_state::tests::should_be_able_to_open_a_file ... ok
[INFO] [stdout] test parse_state::tests::should_reject_a_file_if_not_of_valid_size ... ok
[INFO] [stdout] test parse_state::tests::should_parse_atoms_as_nodes ... ok
[INFO] [stdout] test atoms::leaves::should_read_an_mvhd_atom ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/media_atoms-fb1c0489204a5d09
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests media_atoms
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]   --> /opt/rustwide/workdir/src/parse_state.rs:81:52
[INFO] [stderr]    |
[INFO] [stderr] 81 |             retval = print_tree(f, child, depth+1, (stuff == size));
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "fcd0a66432f938887dc2784bebce7caed0fada1357750996369f49fc7c929161", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcd0a66432f938887dc2784bebce7caed0fada1357750996369f49fc7c929161", kill_on_drop: false }`
[INFO] [stdout] fcd0a66432f938887dc2784bebce7caed0fada1357750996369f49fc7c929161