[INFO] updating cached repository EthanTheMaster/qr-transmitter
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/EthanTheMaster/qr-transmitter
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/EthanTheMaster/qr-transmitter" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/EthanTheMaster/qr-transmitter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/EthanTheMaster/qr-transmitter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/EthanTheMaster/qr-transmitter" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/EthanTheMaster/qr-transmitter"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/EthanTheMaster/qr-transmitter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 846cdf89930248db196e7b8fdd891e6bdf7fca80
[INFO] sha for GitHub repo EthanTheMaster/qr-transmitter: 846cdf89930248db196e7b8fdd891e6bdf7fca80
[INFO] validating manifest of EthanTheMaster/qr-transmitter on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of EthanTheMaster/qr-transmitter on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing EthanTheMaster/qr-transmitter
[INFO] finished frobbing EthanTheMaster/qr-transmitter
[INFO] frobbed toml for EthanTheMaster/qr-transmitter written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/EthanTheMaster/qr-transmitter/Cargo.toml
[INFO] started frobbing EthanTheMaster/qr-transmitter
[INFO] finished frobbing EthanTheMaster/qr-transmitter
[INFO] frobbed toml for EthanTheMaster/qr-transmitter written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/EthanTheMaster/qr-transmitter/Cargo.toml
[INFO] crate EthanTheMaster/qr-transmitter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking EthanTheMaster/qr-transmitter against try#99a7498759a22b5684caf798a98b7e90ad9d2443 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-3/try#99a7498759a22b5684caf798a98b7e90ad9d2443:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/EthanTheMaster/qr-transmitter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2308a74cc3ec2c77a3f2873510ec3e3bee164c295f4442fd422eaf7e5cdd0ba2
[INFO] running `"docker" "start" "-a" "2308a74cc3ec2c77a3f2873510ec3e3bee164c295f4442fd422eaf7e5cdd0ba2"`
[INFO] [stderr]     Checking pistoncore-input v0.24.0
[INFO] [stderr]     Checking smithay-client-toolkit v0.4.4
[INFO] [stderr]     Checking image v0.21.0
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking winit v0.18.1
[INFO] [stderr]     Checking pistoncore-window v0.36.0
[INFO] [stderr]     Checking qrcode v0.6.0
[INFO] [stderr]     Checking pistoncore-event_loop v0.41.0
[INFO] [stderr]     Checking piston v0.41.0
[INFO] [stderr]     Checking piston-gfx_texture v0.35.0
[INFO] [stderr]     Checking glutin v0.19.0
[INFO] [stderr]     Checking piston2d-gfx_graphics v0.56.0
[INFO] [stderr]     Checking pistoncore-glutin_window v0.53.1
[INFO] [stderr]     Checking piston_window v0.88.0
[INFO] [stderr]     Checking qr_transmit v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `qrcode::Version`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use qrcode::Version;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:71:52
[INFO] [stderr]    |
[INFO] [stderr] 71 |                                 combined_packets = (value as u32);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |             thread::sleep_ms(60);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `qrcode::Version`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use qrcode::Version;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/main.rs:71:52
[INFO] [stderr]    |
[INFO] [stderr] 71 |                                 combined_packets = (value as u32);
[INFO] [stderr]    |                                                    ^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_parens)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::thread::sleep_ms': replaced by `std::thread::sleep`
[INFO] [stderr]    --> src/main.rs:111:13
[INFO] [stderr]     |
[INFO] [stderr] 111 |             thread::sleep_ms(60);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/main.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 let mut value = 0.0;
[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: unused variable: `n`
[INFO] [stderr]   --> src/lt_code.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let n = chunk_size;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let mut fountain = lt_code::Fountain::new( message.as_ref(), size as u32, c,delta);
[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 `S` should have a snake case name
[INFO] [stderr]   --> src/lt_code.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let S = c * (chunk_size as f64).powf(0.5) * ((chunk_size as f64) / delta).ln();
[INFO] [stderr]    |             ^ help: convert the identifier to snake case: `s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `value` is never read
[INFO] [stderr]   --> src/main.rs:41:25
[INFO] [stderr]    |
[INFO] [stderr] 41 |                 let mut value = 0.0;
[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: unused variable: `n`
[INFO] [stderr]   --> src/lt_code.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let n = chunk_size;
[INFO] [stderr]    |             ^ help: consider prefixing with an underscore: `_n`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:107:9
[INFO] [stderr]     |
[INFO] [stderr] 107 |     let mut fountain = lt_code::Fountain::new( message.as_ref(), size as u32, c,delta);
[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 `S` should have a snake case name
[INFO] [stderr]   --> src/lt_code.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let S = c * (chunk_size as f64).powf(0.5) * ((chunk_size as f64) / delta).ln();
[INFO] [stderr]    |             ^ help: convert the identifier to snake case: `s`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_snake_case)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 36.95s
[INFO] running `"docker" "inspect" "2308a74cc3ec2c77a3f2873510ec3e3bee164c295f4442fd422eaf7e5cdd0ba2"`
[INFO] running `"docker" "rm" "-f" "2308a74cc3ec2c77a3f2873510ec3e3bee164c295f4442fd422eaf7e5cdd0ba2"`
[INFO] [stdout] 2308a74cc3ec2c77a3f2873510ec3e3bee164c295f4442fd422eaf7e5cdd0ba2