[INFO] updating cached repository ticki/b
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ticki/b
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ticki/b" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ticki/b"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ticki/b'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ticki/b" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ticki/b"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ticki/b'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8b155633ed5c8e2dba46b1fceb52562df1c6cccd
[INFO] sha for GitHub repo ticki/b: 8b155633ed5c8e2dba46b1fceb52562df1c6cccd
[INFO] validating manifest of ticki/b on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ticki/b on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ticki/b
[INFO] finished frobbing ticki/b
[INFO] frobbed toml for ticki/b written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/ticki/b/Cargo.toml
[INFO] started frobbing ticki/b
[INFO] finished frobbing ticki/b
[INFO] frobbed toml for ticki/b written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ticki/b/Cargo.toml
[INFO] crate ticki/b already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ticki/b against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-6/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/ticki/b:/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] e441e2b33af568056ec981c2fb59a4ea7f98c66bc1355e0644f93037e8a6c187
[INFO] running `"docker" "start" "-a" "e441e2b33af568056ec981c2fb59a4ea7f98c66bc1355e0644f93037e8a6c187"`
[INFO] [stderr]     Checking jemalloc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `IndexMut`, `Index`
[INFO] [stderr]  --> src/memory.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use core::ops::{Index, IndexMut};
[INFO] [stderr]   |                 ^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `cmp`, `intrinsics`
[INFO] [stderr]  --> src/memory.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | use core::{cmp, intrinsics, mem};
[INFO] [stderr]   |            ^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/memory.rs:119:30
[INFO] [stderr]     |
[INFO] [stderr] 119 |         MemoryState::from_u8(((ptr::read_u8((self.ptr + byte) as *mut u8) >> bit) & 0b11))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IndexMut`, `Index`
[INFO] [stderr]  --> src/memory.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | use core::ops::{Index, IndexMut};
[INFO] [stderr]   |                 ^^^^^  ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `cmp`, `intrinsics`
[INFO] [stderr]  --> src/memory.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | use core::{cmp, intrinsics, mem};
[INFO] [stderr]   |            ^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/memory.rs:119:30
[INFO] [stderr]     |
[INFO] [stderr] 119 |         MemoryState::from_u8(((ptr::read_u8((self.ptr + byte) as *mut u8) >> bit) & 0b11))
[INFO] [stderr]     |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |             let b = memory::alloc(i);
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]    --> src/memory.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         size = (1 << order) * MT_ATOM;
[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: `i`
[INFO] [stderr]    --> src/memory.rs:348:13
[INFO] [stderr]     |
[INFO] [stderr] 348 |         for i in 0..delta {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `level`
[INFO] [stderr]    --> src/memory.rs:363:21
[INFO] [stderr]     |
[INFO] [stderr] 363 |             let mut level = 0;
[INFO] [stderr]     |                     ^^^^^ help: consider prefixing with an underscore: `_level`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]    --> src/memory.rs:366:13
[INFO] [stderr]     |
[INFO] [stderr] 366 |             size = (1 << order) * MT_ATOM;
[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/memory.rs:372:21
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 for i in 1..(-delta as usize) {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/memory.rs:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 for i in 1..delta {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/memory.rs:363:17
[INFO] [stderr]     |
[INFO] [stderr] 363 |             let mut level = 0;
[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/memory.rs:523:17
[INFO] [stderr]     |
[INFO] [stderr] 523 |     if let Some(mut b) = MT.realloc(Block::from_ptr(ptr), size) {
[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/memory.rs:552:9
[INFO] [stderr]     |
[INFO] [stderr] 552 |     let mut ret = 0;
[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/memory.rs:562:9
[INFO] [stderr]     |
[INFO] [stderr] 562 |     let mut ret = 1024 * 1024;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:441:5
[INFO] [stderr]     |
[INFO] [stderr] 430 | pub unsafe fn alloc(size: usize) -> usize {
[INFO] [stderr]     | ----------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 441 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:467:5
[INFO] [stderr]     |
[INFO] [stderr] 459 | pub unsafe fn alloc_aligned(size: usize, align: usize) -> usize {
[INFO] [stderr]     | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 467 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:553:5
[INFO] [stderr]     |
[INFO] [stderr] 553 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:563:5
[INFO] [stderr]     |
[INFO] [stderr] 563 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MT_ROOT`
[INFO] [stderr]   --> src/memory.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub const MT_ROOT: usize = MT_LEAFS * MT_ATOM;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read`
[INFO] [stderr]   --> src/memory.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub unsafe fn read(ptr: *const u8) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pos`
[INFO] [stderr]    --> src/memory.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn pos(&self, idx: usize, level: usize) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/memory.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     Left = 0,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/memory.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     Right = 1,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sibl`
[INFO] [stderr]    --> src/memory.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn sibl(&self) -> Sibling {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parrent`
[INFO] [stderr]    --> src/memory.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     pub fn parrent(&self) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]    --> src/memory.rs:216:5
[INFO] [stderr]     |
[INFO] [stderr] 216 |     pub fn size(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_pos`
[INFO] [stderr]    --> src/memory.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub fn from_pos(pos: usize) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_ptr`
[INFO] [stderr]    --> src/memory.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     pub fn from_ptr(ptr: usize) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `alloc_align`
[INFO] [stderr]    --> src/memory.rs:314:5
[INFO] [stderr]     |
[INFO] [stderr] 314 |     pub unsafe fn alloc_align(&self, mut size: usize, align: usize) -> Option<Block> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `realloc`
[INFO] [stderr]    --> src/memory.rs:357:5
[INFO] [stderr]     |
[INFO] [stderr] 357 |     pub unsafe fn realloc(&self, mut block: Block, mut size: usize) -> Option<Block> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dealloc`
[INFO] [stderr]    --> src/memory.rs:408:5
[INFO] [stderr]     |
[INFO] [stderr] 408 |     pub unsafe fn dealloc(&mut self, block: Block) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_aligned`
[INFO] [stderr]    --> src/memory.rs:459:1
[INFO] [stderr]     |
[INFO] [stderr] 459 | pub unsafe fn alloc_aligned(size: usize, align: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_type`
[INFO] [stderr]    --> src/memory.rs:486:1
[INFO] [stderr]     |
[INFO] [stderr] 486 | pub unsafe fn alloc_type<T>() -> *mut T {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_size`
[INFO] [stderr]    --> src/memory.rs:491:1
[INFO] [stderr]     |
[INFO] [stderr] 491 | pub unsafe fn alloc_size(ptr: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dealloc`
[INFO] [stderr]    --> src/memory.rs:496:1
[INFO] [stderr]     |
[INFO] [stderr] 496 | pub unsafe fn dealloc(ptr: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `realloc`
[INFO] [stderr]    --> src/memory.rs:513:1
[INFO] [stderr]     |
[INFO] [stderr] 513 | pub unsafe fn realloc(ptr: usize, size: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `realloc_inplace`
[INFO] [stderr]    --> src/memory.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | pub unsafe fn realloc_inplace(ptr: usize, size: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `memory_used`
[INFO] [stderr]    --> src/memory.rs:551:1
[INFO] [stderr]     |
[INFO] [stderr] 551 | pub fn memory_used() -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `memory_free`
[INFO] [stderr]    --> src/memory.rs:561:1
[INFO] [stderr]     |
[INFO] [stderr] 561 | pub fn memory_free() -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(core)]
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:14:17
[INFO] [stderr]    |
[INFO] [stderr] 14 |             let b = memory::alloc(i);
[INFO] [stderr]    |                 ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]    --> src/memory.rs:327:9
[INFO] [stderr]     |
[INFO] [stderr] 327 |         size = (1 << order) * MT_ATOM;
[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: `i`
[INFO] [stderr]    --> src/memory.rs:348:13
[INFO] [stderr]     |
[INFO] [stderr] 348 |         for i in 0..delta {
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `level`
[INFO] [stderr]    --> src/memory.rs:363:21
[INFO] [stderr]     |
[INFO] [stderr] 363 |             let mut level = 0;
[INFO] [stderr]     |                     ^^^^^ help: consider prefixing with an underscore: `_level`
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]    --> src/memory.rs:366:13
[INFO] [stderr]     |
[INFO] [stderr] 366 |             size = (1 << order) * MT_ATOM;
[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/memory.rs:372:21
[INFO] [stderr]     |
[INFO] [stderr] 372 |                 for i in 1..(-delta as usize) {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/memory.rs:380:21
[INFO] [stderr]     |
[INFO] [stderr] 380 |                 for i in 1..delta {
[INFO] [stderr]     |                     ^ help: consider prefixing with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/memory.rs:363:17
[INFO] [stderr]     |
[INFO] [stderr] 363 |             let mut level = 0;
[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/memory.rs:523:17
[INFO] [stderr]     |
[INFO] [stderr] 523 |     if let Some(mut b) = MT.realloc(Block::from_ptr(ptr), size) {
[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/memory.rs:552:9
[INFO] [stderr]     |
[INFO] [stderr] 552 |     let mut ret = 0;
[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/memory.rs:562:9
[INFO] [stderr]     |
[INFO] [stderr] 562 |     let mut ret = 1024 * 1024;
[INFO] [stderr]     |         ----^^^
[INFO] [stderr]     |         |
[INFO] [stderr]     |         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:441:5
[INFO] [stderr]     |
[INFO] [stderr] 430 | pub unsafe fn alloc(size: usize) -> usize {
[INFO] [stderr]     | ----------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 441 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_unsafe)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:467:5
[INFO] [stderr]     |
[INFO] [stderr] 459 | pub unsafe fn alloc_aligned(size: usize, align: usize) -> usize {
[INFO] [stderr]     | --------------------------------------------------------------- because it's nested under this `unsafe` fn
[INFO] [stderr] ...
[INFO] [stderr] 467 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:553:5
[INFO] [stderr]     |
[INFO] [stderr] 553 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary `unsafe` block
[INFO] [stderr]    --> src/memory.rs:563:5
[INFO] [stderr]     |
[INFO] [stderr] 563 |     unsafe {
[INFO] [stderr]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stderr] 
[INFO] [stderr] warning: constant item is never used: `MT_ROOT`
[INFO] [stderr]   --> src/memory.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | pub const MT_ROOT: usize = MT_LEAFS * MT_ATOM;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read`
[INFO] [stderr]   --> src/memory.rs:44:5
[INFO] [stderr]    |
[INFO] [stderr] 44 |     pub unsafe fn read(ptr: *const u8) -> u8 {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pos`
[INFO] [stderr]    --> src/memory.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     pub fn pos(&self, idx: usize, level: usize) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]    --> src/memory.rs:167:5
[INFO] [stderr]     |
[INFO] [stderr] 167 |     Left = 0,
[INFO] [stderr]     |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Right`
[INFO] [stderr]    --> src/memory.rs:168:5
[INFO] [stderr]     |
[INFO] [stderr] 168 |     Right = 1,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sibl`
[INFO] [stderr]    --> src/memory.rs:189:5
[INFO] [stderr]     |
[INFO] [stderr] 189 |     pub fn sibl(&self) -> Sibling {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parrent`
[INFO] [stderr]    --> src/memory.rs:207:5
[INFO] [stderr]     |
[INFO] [stderr] 207 |     pub fn parrent(&self) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `size`
[INFO] [stderr]    --> src/memory.rs:216:5
[INFO] [stderr]     |
[INFO] [stderr] 216 |     pub fn size(&self) -> usize {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_pos`
[INFO] [stderr]    --> src/memory.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub fn from_pos(pos: usize) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from_ptr`
[INFO] [stderr]    --> src/memory.rs:233:5
[INFO] [stderr]     |
[INFO] [stderr] 233 |     pub fn from_ptr(ptr: usize) -> Block {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `alloc_align`
[INFO] [stderr]    --> src/memory.rs:314:5
[INFO] [stderr]     |
[INFO] [stderr] 314 |     pub unsafe fn alloc_align(&self, mut size: usize, align: usize) -> Option<Block> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `realloc`
[INFO] [stderr]    --> src/memory.rs:357:5
[INFO] [stderr]     |
[INFO] [stderr] 357 |     pub unsafe fn realloc(&self, mut block: Block, mut size: usize) -> Option<Block> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `dealloc`
[INFO] [stderr]    --> src/memory.rs:408:5
[INFO] [stderr]     |
[INFO] [stderr] 408 |     pub unsafe fn dealloc(&mut self, block: Block) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_aligned`
[INFO] [stderr]    --> src/memory.rs:459:1
[INFO] [stderr]     |
[INFO] [stderr] 459 | pub unsafe fn alloc_aligned(size: usize, align: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_type`
[INFO] [stderr]    --> src/memory.rs:486:1
[INFO] [stderr]     |
[INFO] [stderr] 486 | pub unsafe fn alloc_type<T>() -> *mut T {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alloc_size`
[INFO] [stderr]    --> src/memory.rs:491:1
[INFO] [stderr]     |
[INFO] [stderr] 491 | pub unsafe fn alloc_size(ptr: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dealloc`
[INFO] [stderr]    --> src/memory.rs:496:1
[INFO] [stderr]     |
[INFO] [stderr] 496 | pub unsafe fn dealloc(ptr: usize) {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `realloc`
[INFO] [stderr]    --> src/memory.rs:513:1
[INFO] [stderr]     |
[INFO] [stderr] 513 | pub unsafe fn realloc(ptr: usize, size: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `realloc_inplace`
[INFO] [stderr]    --> src/memory.rs:542:1
[INFO] [stderr]     |
[INFO] [stderr] 542 | pub unsafe fn realloc_inplace(ptr: usize, size: usize) -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `memory_used`
[INFO] [stderr]    --> src/memory.rs:551:1
[INFO] [stderr]     |
[INFO] [stderr] 551 | pub fn memory_used() -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `memory_free`
[INFO] [stderr]    --> src/memory.rs:561:1
[INFO] [stderr]     |
[INFO] [stderr] 561 | pub fn memory_free() -> usize {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the feature `core` has been stable since 1.6.0 and no longer requires an attribute to enable
[INFO] [stderr]  --> src/main.rs:1:12
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(core)]
[INFO] [stderr]   |            ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(stable_features)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `jemalloc`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name jemalloc src/main.rs --color never --emit=dep-info,metadata -C debuginfo=2 --test -C metadata=dc51b7489c743b00 -C extra-filename=-dc51b7489c743b00 --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: Could not compile `jemalloc`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name jemalloc src/main.rs --color never --crate-type bin --emit=dep-info,metadata -C debuginfo=2 -C metadata=a62e0c25c055dc9b -C extra-filename=-a62e0c25c055dc9b --out-dir /opt/crater/target/debug/deps -L dependency=/opt/crater/target/debug/deps --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] running `"docker" "inspect" "e441e2b33af568056ec981c2fb59a4ea7f98c66bc1355e0644f93037e8a6c187"`
[INFO] running `"docker" "rm" "-f" "e441e2b33af568056ec981c2fb59a4ea7f98c66bc1355e0644f93037e8a6c187"`
[INFO] [stdout] e441e2b33af568056ec981c2fb59a4ea7f98c66bc1355e0644f93037e8a6c187