[INFO] cloning repository https://github.com/EthanTheMaster/qr-transmitter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EthanTheMaster/qr-transmitter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fqr-transmitter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fqr-transmitter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fdc7f3048053444640b2ccfb65b1699ff79688ef
[INFO] checking EthanTheMaster/qr-transmitter against master#4008bbdf34b583ce44a467043aae3703afc0a76f for pr-129249-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEthanTheMaster%2Fqr-transmitter" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/EthanTheMaster/qr-transmitter
[INFO] finished tweaking git repo https://github.com/EthanTheMaster/qr-transmitter
[INFO] tweaked toml for git repo https://github.com/EthanTheMaster/qr-transmitter written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/EthanTheMaster/qr-transmitter on toolchain 4008bbdf34b583ce44a467043aae3703afc0a76f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/EthanTheMaster/qr-transmitter 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" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded num-rational v0.1.42
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278
[INFO] running `Command { std: "docker" "start" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278", 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" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278" "/opt/rustwide/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278", 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" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278" "/opt/rustwide/cargo-home/bin/cargo" "+4008bbdf34b583ce44a467043aae3703afc0a76f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `qrcode::Version`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use qrcode::Version;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:71:52
[INFO] [stdout]    |
[INFO] [stdout] 71 | ...                   combined_packets = (value as u32);
[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] 71 -                                 combined_packets = (value as u32);
[INFO] [stdout] 71 +                                 combined_packets = value as u32 ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:111:21
[INFO] [stdout]     |
[INFO] [stdout] 111 |             thread::sleep_ms(60);
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/lt_code.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let n = chunk_size;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[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/main.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let mut fountain = lt_code::Fountain::new( message.as_ref(), size as u32, c,delta);
[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: value assigned to `value` is never read
[INFO] [stdout]   --> src/main.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 let mut value = 0.0;
[INFO] [stdout]    |                                 ^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 51 |                                 value = n;
[INFO] [stdout]    |                                 --------- `value` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lt_code.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(data: &[u8], chunk_size: u32, c: f64, delta: f64) -> Fountain {
[INFO] [stdout]    |                      ^^^^^ the lifetime is elided here              ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(data: &[u8], chunk_size: u32, c: f64, delta: f64) -> Fountain<'_> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/lt_code.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let S = c * (chunk_size as f64).powf(0.5) * ((chunk_size as f64) / delta).ln();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `qrcode::Version`
[INFO] [stdout]   --> src/main.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use qrcode::Version;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/main.rs:71:52
[INFO] [stdout]    |
[INFO] [stdout] 71 | ...                   combined_packets = (value as u32);
[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] 71 -                                 combined_packets = (value as u32);
[INFO] [stdout] 71 +                                 combined_packets = value as u32 ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated function `std::thread::sleep_ms`: replaced by `std::thread::sleep`
[INFO] [stdout]    --> src/main.rs:111:21
[INFO] [stdout]     |
[INFO] [stdout] 111 |             thread::sleep_ms(60);
[INFO] [stdout]     |                     ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/lt_code.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let n = chunk_size;
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[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/main.rs:107:9
[INFO] [stdout]     |
[INFO] [stdout] 107 |     let mut fountain = lt_code::Fountain::new( message.as_ref(), size as u32, c,delta);
[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: value assigned to `value` is never read
[INFO] [stdout]   --> src/main.rs:41:33
[INFO] [stdout]    |
[INFO] [stdout] 41 |                 let mut value = 0.0;
[INFO] [stdout]    |                                 ^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 51 |                                 value = n;
[INFO] [stdout]    |                                 --------- `value` 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: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/lt_code.rs:48:22
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(data: &[u8], chunk_size: u32, c: f64, delta: f64) -> Fountain {
[INFO] [stdout]    |                      ^^^^^ the lifetime is elided here              ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 48 |     pub fn new(data: &[u8], chunk_size: u32, c: f64, delta: f64) -> Fountain<'_> {
[INFO] [stdout]    |                                                                             ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `S` should have a snake case name
[INFO] [stdout]   --> src/lt_code.rs:56:13
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let S = c * (chunk_size as f64).powf(0.5) * ((chunk_size as f64) / delta).ln();
[INFO] [stdout]    |             ^ help: convert the identifier to snake case (notice the capitalization): `s`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: glutin v0.19.0, winit v0.18.1
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 3`
[INFO] running `Command { std: "docker" "inspect" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278", kill_on_drop: false }`
[INFO] [stdout] 3142cffc818e37744cba0a7edd3de3b388b025d00dd62df2c95bf5379db8e278
