Dec 18 07:38:59.788 INFO checking FlatBartender/flow against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 07:38:59.788 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-1/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/gh/FlatBartender/flow:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 07:39:00.223 INFO [stdout] ddf8f77f2546ef1e75ae02211c30f648412fd139b82c2d62aedba4aec9ece08b
Dec 18 07:39:00.226 INFO running `"docker" "start" "-a" "ddf8f77f2546ef1e75ae02211c30f648412fd139b82c2d62aedba4aec9ece08b"`
Dec 18 07:39:01.778 INFO [stderr]     Checking flow v0.1.0 (/opt/crater/workdir)
Dec 18 07:39:02.182 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.183 INFO [stderr]  --> src/main.rs:9:9
Dec 18 07:39:02.183 INFO [stderr]   |
Dec 18 07:39:02.183 INFO [stderr] 9 |     let mut sine     = Sine::new(Node::float(1.0));
Dec 18 07:39:02.183 INFO [stderr]   |         ----^^^^
Dec 18 07:39:02.184 INFO [stderr]   |         |
Dec 18 07:39:02.184 INFO [stderr]   |         help: remove this `mut`
Dec 18 07:39:02.184 INFO [stderr]   |
Dec 18 07:39:02.184 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 07:39:02.184 INFO [stderr] 
Dec 18 07:39:02.184 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.184 INFO [stderr]   --> src/main.rs:10:9
Dec 18 07:39:02.184 INFO [stderr]    |
Dec 18 07:39:02.184 INFO [stderr] 10 |     let mut freq     = sine * 440.0 + 880.0;
Dec 18 07:39:02.184 INFO [stderr]    |         ----^^^^
Dec 18 07:39:02.184 INFO [stderr]    |         |
Dec 18 07:39:02.184 INFO [stderr]    |         help: remove this `mut`
Dec 18 07:39:02.184 INFO [stderr] 
Dec 18 07:39:02.184 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.184 INFO [stderr]   --> src/main.rs:11:9
Dec 18 07:39:02.184 INFO [stderr]    |
Dec 18 07:39:02.184 INFO [stderr] 11 |     let mut saw      = Saw::new(freq);
Dec 18 07:39:02.184 INFO [stderr]    |         ----^^^
Dec 18 07:39:02.184 INFO [stderr]    |         |
Dec 18 07:39:02.184 INFO [stderr]    |         help: remove this `mut`
Dec 18 07:39:02.184 INFO [stderr] 
Dec 18 07:39:02.188 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.189 INFO [stderr]   --> src/node/square.rs:12:5
Dec 18 07:39:02.189 INFO [stderr]    |
Dec 18 07:39:02.190 INFO [stderr] 12 |     pub fn new(frequency: Box<Node>, duty: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.190 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.190 INFO [stderr]    |
Dec 18 07:39:02.191 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:39:02.191 INFO [stderr] 
Dec 18 07:39:02.192 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.192 INFO [stderr]   --> src/node/add.rs:11:5
Dec 18 07:39:02.192 INFO [stderr]    |
Dec 18 07:39:02.192 INFO [stderr] 11 |     pub fn new(term_a: Box<Node>, term_b: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.192 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.192 INFO [stderr] 
Dec 18 07:39:02.192 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.192 INFO [stderr]   --> src/node/mul.rs:11:5
Dec 18 07:39:02.192 INFO [stderr]    |
Dec 18 07:39:02.192 INFO [stderr] 11 |     pub fn new(term_a: Box<Node>, term_b: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.192 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.192 INFO [stderr] 
Dec 18 07:39:02.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.192 INFO [stderr]  --> src/main.rs:9:9
Dec 18 07:39:02.192 INFO [stderr]   |
Dec 18 07:39:02.192 INFO [stderr] 9 |     let mut sine     = Sine::new(Node::float(1.0));
Dec 18 07:39:02.192 INFO [stderr]   |         ----^^^^
Dec 18 07:39:02.192 INFO [stderr]   |         |
Dec 18 07:39:02.192 INFO [stderr]   |         help: remove this `mut`
Dec 18 07:39:02.192 INFO [stderr]   |
Dec 18 07:39:02.192 INFO [stderr]   = note: #[warn(unused_mut)] on by default
Dec 18 07:39:02.192 INFO [stderr] 
Dec 18 07:39:02.192 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.192 INFO [stderr]   --> src/main.rs:10:9
Dec 18 07:39:02.192 INFO [stderr]    |
Dec 18 07:39:02.192 INFO [stderr] 10 |     let mut freq     = sine * 440.0 + 880.0;
Dec 18 07:39:02.193 INFO [stderr]    |         ----^^^^
Dec 18 07:39:02.193 INFO [stderr]    |         |
Dec 18 07:39:02.193 INFO [stderr]    |         help: remove this `mut`
Dec 18 07:39:02.193 INFO [stderr] 
Dec 18 07:39:02.193 INFO [stderr] warning: variable does not need to be mutable
Dec 18 07:39:02.193 INFO [stderr]   --> src/main.rs:11:9
Dec 18 07:39:02.193 INFO [stderr]    |
Dec 18 07:39:02.193 INFO [stderr] 11 |     let mut saw      = Saw::new(freq);
Dec 18 07:39:02.193 INFO [stderr]    |         ----^^^
Dec 18 07:39:02.193 INFO [stderr]    |         |
Dec 18 07:39:02.193 INFO [stderr]    |         help: remove this `mut`
Dec 18 07:39:02.193 INFO [stderr] 
Dec 18 07:39:02.207 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.207 INFO [stderr]   --> src/node/square.rs:12:5
Dec 18 07:39:02.207 INFO [stderr]    |
Dec 18 07:39:02.207 INFO [stderr] 12 |     pub fn new(frequency: Box<Node>, duty: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.207 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.207 INFO [stderr]    |
Dec 18 07:39:02.207 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 07:39:02.207 INFO [stderr] 
Dec 18 07:39:02.207 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.207 INFO [stderr]   --> src/node/add.rs:11:5
Dec 18 07:39:02.207 INFO [stderr]    |
Dec 18 07:39:02.207 INFO [stderr] 11 |     pub fn new(term_a: Box<Node>, term_b: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.207 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.207 INFO [stderr] 
Dec 18 07:39:02.207 INFO [stderr] warning: method is never used: `new`
Dec 18 07:39:02.207 INFO [stderr]   --> src/node/mul.rs:11:5
Dec 18 07:39:02.207 INFO [stderr]    |
Dec 18 07:39:02.207 INFO [stderr] 11 |     pub fn new(term_a: Box<Node>, term_b: Box<Node>) -> Box<Node> {
Dec 18 07:39:02.207 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 07:39:02.207 INFO [stderr] 
Dec 18 07:39:02.256 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.50s
Dec 18 07:39:02.848 INFO running `"docker" "inspect" "ddf8f77f2546ef1e75ae02211c30f648412fd139b82c2d62aedba4aec9ece08b"`
Dec 18 07:39:03.078 INFO running `"docker" "rm" "-f" "ddf8f77f2546ef1e75ae02211c30f648412fd139b82c2d62aedba4aec9ece08b"`
Dec 18 07:39:03.278 INFO [stdout] ddf8f77f2546ef1e75ae02211c30f648412fd139b82c2d62aedba4aec9ece08b