Dec 19 12:20:49.538 INFO checking mratsim/bndump against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 12:20:49.538 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-7/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/mratsim/bndump:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 12:20:50.021 INFO [stdout] 8109101db4df5acfabd1e274352e699c4b343ceb7cf6cef3e2d58c6c2d41df2d
Dec 19 12:20:50.024 INFO running `"docker" "start" "-a" "8109101db4df5acfabd1e274352e699c4b343ceb7cf6cef3e2d58c6c2d41df2d"`
Dec 19 12:20:52.536 INFO [stderr]     Checking bndump v0.1.0 (/opt/crater/workdir)
Dec 19 12:20:52.804 INFO [stderr] warning: unused import: `Encodable`
Dec 19 12:20:52.804 INFO [stderr]  --> src/main.rs:6:29
Dec 19 12:20:52.804 INFO [stderr]   |
Dec 19 12:20:52.804 INFO [stderr] 6 | use rustc_serialize::{json, Encodable};
Dec 19 12:20:52.804 INFO [stderr]   |                             ^^^^^^^^^
Dec 19 12:20:52.804 INFO [stderr]   |
Dec 19 12:20:52.804 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:20:52.804 INFO [stderr] 
Dec 19 12:20:52.985 INFO [stderr] warning: unused import: `Encodable`
Dec 19 12:20:52.985 INFO [stderr]  --> src/main.rs:6:29
Dec 19 12:20:52.985 INFO [stderr]   |
Dec 19 12:20:52.985 INFO [stderr] 6 | use rustc_serialize::{json, Encodable};
Dec 19 12:20:52.985 INFO [stderr]   |                             ^^^^^^^^^
Dec 19 12:20:52.985 INFO [stderr]   |
Dec 19 12:20:52.986 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 12:20:52.986 INFO [stderr] 
Dec 19 12:20:53.028 INFO [stderr] warning: unused variable: `buf`
Dec 19 12:20:53.028 INFO [stderr]   --> src/main.rs:12:13
Dec 19 12:20:53.028 INFO [stderr]    |
Dec 19 12:20:53.028 INFO [stderr] 12 |     let mut buf = [0u8; (8 * 8)];
Dec 19 12:20:53.028 INFO [stderr]    |             ^^^ help: consider using `_buf` instead
Dec 19 12:20:53.028 INFO [stderr]    |
Dec 19 12:20:53.028 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:20:53.028 INFO [stderr] 
Dec 19 12:20:53.028 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:20:53.028 INFO [stderr]   --> src/main.rs:12:9
Dec 19 12:20:53.029 INFO [stderr]    |
Dec 19 12:20:53.029 INFO [stderr] 12 |     let mut buf = [0u8; (8 * 8)];
Dec 19 12:20:53.029 INFO [stderr]    |         ----^^^
Dec 19 12:20:53.029 INFO [stderr]    |         |
Dec 19 12:20:53.029 INFO [stderr]    |         help: remove this `mut`
Dec 19 12:20:53.029 INFO [stderr]    |
Dec 19 12:20:53.029 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:20:53.029 INFO [stderr] 
Dec 19 12:20:53.076 INFO [stderr] warning: method is never used: `one`
Dec 19 12:20:53.076 INFO [stderr]    --> src/arith.rs:192:5
Dec 19 12:20:53.076 INFO [stderr]     |
Dec 19 12:20:53.076 INFO [stderr] 192 |     pub fn one() -> U256 {
Dec 19 12:20:53.076 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.076 INFO [stderr]     |
Dec 19 12:20:53.076 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 12:20:53.076 INFO [stderr] 
Dec 19 12:20:53.076 INFO [stderr] warning: method is never used: `is_zero`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:202:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 202 |     pub fn is_zero(&self) -> bool {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `add`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:240:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 240 |     pub fn add(&mut self, other: &U256, modulo: &U256) {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `sub`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:249:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 249 |     pub fn sub(&mut self, other: &U256, modulo: &U256) {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `mul`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:259:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 259 |     pub fn mul(&mut self, other: &U256, modulo: &U256, inv: u64) {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `neg`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:268:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 268 |     pub fn neg(&mut self, modulo: &U256) {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `is_even`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:278:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 278 |     pub fn is_even(&self) -> bool {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `invert`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:283:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 283 |     pub fn invert(&mut self, modulo: &U256) {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: method is never used: `bits`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:333:5
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 333 |     pub fn bits(&self) -> BitIterator {
Dec 19 12:20:53.077 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: struct is never constructed: `BitIterator`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:341:1
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 341 | pub struct BitIterator<'a> {
Dec 19 12:20:53.077 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: function is never used: `div2`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:363:1
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 363 | fn div2(a: &mut [u64; 4]) {
Dec 19 12:20:53.077 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: function is never used: `add_nocarry`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:410:1
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 410 | fn add_nocarry(a: &mut [u64; 4], b: &[u64; 4]) {
Dec 19 12:20:53.077 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.077 INFO [stderr] warning: function is never used: `mul_reduce`
Dec 19 12:20:53.077 INFO [stderr]    --> src/arith.rs:483:1
Dec 19 12:20:53.077 INFO [stderr]     |
Dec 19 12:20:53.077 INFO [stderr] 483 | / fn mul_reduce(
Dec 19 12:20:53.077 INFO [stderr] 484 | |     this: &mut [u64; 4],
Dec 19 12:20:53.077 INFO [stderr] 485 | |     by: &[u64; 4],
Dec 19 12:20:53.077 INFO [stderr] 486 | |     modulus: &[u64; 4],
Dec 19 12:20:53.077 INFO [stderr] ...   |
Dec 19 12:20:53.077 INFO [stderr] 504 | |     this.copy_from_slice(&res[4..]);
Dec 19 12:20:53.077 INFO [stderr] 505 | | }
Dec 19 12:20:53.077 INFO [stderr]     | |_^
Dec 19 12:20:53.077 INFO [stderr] 
Dec 19 12:20:53.419 INFO [stderr] warning: unused variable: `buf`
Dec 19 12:20:53.419 INFO [stderr]   --> src/main.rs:12:13
Dec 19 12:20:53.419 INFO [stderr]    |
Dec 19 12:20:53.419 INFO [stderr] 12 |     let mut buf = [0u8; (8 * 8)];
Dec 19 12:20:53.419 INFO [stderr]    |             ^^^ help: consider using `_buf` instead
Dec 19 12:20:53.419 INFO [stderr]    |
Dec 19 12:20:53.419 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 12:20:53.419 INFO [stderr] 
Dec 19 12:20:53.424 INFO [stderr] warning: variable does not need to be mutable
Dec 19 12:20:53.424 INFO [stderr]   --> src/main.rs:12:9
Dec 19 12:20:53.424 INFO [stderr]    |
Dec 19 12:20:53.424 INFO [stderr] 12 |     let mut buf = [0u8; (8 * 8)];
Dec 19 12:20:53.424 INFO [stderr]    |         ----^^^
Dec 19 12:20:53.424 INFO [stderr]    |         |
Dec 19 12:20:53.424 INFO [stderr]    |         help: remove this `mut`
Dec 19 12:20:53.424 INFO [stderr]    |
Dec 19 12:20:53.424 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 12:20:53.424 INFO [stderr] 
Dec 19 12:20:53.516 INFO [stderr] warning: method is never used: `is_zero`
Dec 19 12:20:53.516 INFO [stderr]    --> src/arith.rs:202:5
Dec 19 12:20:53.516 INFO [stderr]     |
Dec 19 12:20:53.516 INFO [stderr] 202 |     pub fn is_zero(&self) -> bool {
Dec 19 12:20:53.516 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.516 INFO [stderr]     |
Dec 19 12:20:53.516 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 12:20:53.516 INFO [stderr] 
Dec 19 12:20:53.516 INFO [stderr] warning: method is never used: `add`
Dec 19 12:20:53.516 INFO [stderr]    --> src/arith.rs:240:5
Dec 19 12:20:53.516 INFO [stderr]     |
Dec 19 12:20:53.516 INFO [stderr] 240 |     pub fn add(&mut self, other: &U256, modulo: &U256) {
Dec 19 12:20:53.516 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.516 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: method is never used: `sub`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:249:5
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 249 |     pub fn sub(&mut self, other: &U256, modulo: &U256) {
Dec 19 12:20:53.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: method is never used: `mul`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:259:5
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 259 |     pub fn mul(&mut self, other: &U256, modulo: &U256, inv: u64) {
Dec 19 12:20:53.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: method is never used: `neg`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:268:5
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 268 |     pub fn neg(&mut self, modulo: &U256) {
Dec 19 12:20:53.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: method is never used: `is_even`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:278:5
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 278 |     pub fn is_even(&self) -> bool {
Dec 19 12:20:53.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: method is never used: `invert`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:283:5
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 283 |     pub fn invert(&mut self, modulo: &U256) {
Dec 19 12:20:53.517 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: function is never used: `div2`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:363:1
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 363 | fn div2(a: &mut [u64; 4]) {
Dec 19 12:20:53.517 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: function is never used: `add_nocarry`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:410:1
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 410 | fn add_nocarry(a: &mut [u64; 4], b: &[u64; 4]) {
Dec 19 12:20:53.517 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.517 INFO [stderr] warning: function is never used: `mul_reduce`
Dec 19 12:20:53.517 INFO [stderr]    --> src/arith.rs:483:1
Dec 19 12:20:53.517 INFO [stderr]     |
Dec 19 12:20:53.517 INFO [stderr] 483 | / fn mul_reduce(
Dec 19 12:20:53.517 INFO [stderr] 484 | |     this: &mut [u64; 4],
Dec 19 12:20:53.517 INFO [stderr] 485 | |     by: &[u64; 4],
Dec 19 12:20:53.517 INFO [stderr] 486 | |     modulus: &[u64; 4],
Dec 19 12:20:53.517 INFO [stderr] ...   |
Dec 19 12:20:53.517 INFO [stderr] 504 | |     this.copy_from_slice(&res[4..]);
Dec 19 12:20:53.517 INFO [stderr] 505 | | }
Dec 19 12:20:53.517 INFO [stderr]     | |_^
Dec 19 12:20:53.517 INFO [stderr] 
Dec 19 12:20:53.564 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.07s
Dec 19 12:20:54.290 INFO running `"docker" "inspect" "8109101db4df5acfabd1e274352e699c4b343ceb7cf6cef3e2d58c6c2d41df2d"`
Dec 19 12:20:54.522 INFO running `"docker" "rm" "-f" "8109101db4df5acfabd1e274352e699c4b343ceb7cf6cef3e2d58c6c2d41df2d"`
Dec 19 12:20:54.944 INFO [stdout] 8109101db4df5acfabd1e274352e699c4b343ceb7cf6cef3e2d58c6c2d41df2d