[INFO] cloning repository https://github.com/adityasupugade/memory-management-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adityasupugade/memory-management-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadityasupugade%2Fmemory-management-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadityasupugade%2Fmemory-management-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6e8415e1c98daac8cde5770dda4ebf971e6f36c5
[INFO] checking adityasupugade/memory-management-rust/6e8415e1c98daac8cde5770dda4ebf971e6f36c5 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadityasupugade%2Fmemory-management-rust" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adityasupugade/memory-management-rust on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adityasupugade/memory-management-rust
[INFO] finished tweaking git repo https://github.com/adityasupugade/memory-management-rust
[INFO] tweaked toml for git repo https://github.com/adityasupugade/memory-management-rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/adityasupugade/memory-management-rust 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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9ac2fc8df7c6b71e7b79e0ee33f3ea5842f820062bdc944da1c8206fb3849ed6
[INFO] running `Command { std: "docker" "start" "-a" "9ac2fc8df7c6b71e7b79e0ee33f3ea5842f820062bdc944da1c8206fb3849ed6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9ac2fc8df7c6b71e7b79e0ee33f3ea5842f820062bdc944da1c8206fb3849ed6", kill_on_drop: false }`
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[INFO] [stdout] 9ac2fc8df7c6b71e7b79e0ee33f3ea5842f820062bdc944da1c8206fb3849ed6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,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" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-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" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 638fbbd80e1297064b0f4b62d26aaa5b174d37ad3e56fbe52e4cc3536ba12ffc
[INFO] running `Command { std: "docker" "start" "-a" "638fbbd80e1297064b0f4b62d26aaa5b174d37ad3e56fbe52e4cc3536ba12ffc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.133
[INFO] [stderr]    Compiling proc-macro2 v1.0.43
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling syn v1.0.100
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling parking_lot_core v0.9.3
[INFO] [stderr]     Checking smallvec v1.9.0
[INFO] [stderr]     Checking once_cell v1.14.0
[INFO] [stderr]    Compiling tokio v1.21.1
[INFO] [stderr]     Checking bytes v1.2.1
[INFO] [stderr]     Checking tracing-core v0.1.29
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking socket2 v0.4.7
[INFO] [stderr]     Checking mio v0.8.4
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling tokio-macros v1.8.0
[INFO] [stderr]     Checking tracing v0.1.36
[INFO] [stderr]     Checking memory-management-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Level`
[INFO] [stdout]    --> src/mem.rs:398:25
[INFO] [stdout]     |
[INFO] [stdout] 398 |     use tracing::{self, Level};
[INFO] [stdout]     |                         ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `RESERVE` is never used
[INFO] [stdout]   --> src/mem.rs:10:11
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub const RESERVE: u8 = 10;
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `TRY_RESERVE` is never used
[INFO] [stdout]   --> src/mem.rs:11:11
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub const TRY_RESERVE: u8 = 20;
[INFO] [stdout]    |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ALLOCATE` is never used
[INFO] [stdout]   --> src/mem.rs:12:11
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub const ALLOCATE: u8 = 30;
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `child` is never read
[INFO] [stdout]   --> src/mem.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Block {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 19 |     child: bool,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `as_ref_static`, `trim`, `chunk`, and `chunks` are never used
[INFO] [stdout]   --> src/mem.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Block {
[INFO] [stdout]    | ---------- methods in this implementation
[INFO] [stdout] 32 |     pub fn as_ref_static(&self) -> &'static [u8] {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn trim(&mut self, size: usize) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn chunk(self, off: usize, blocksz: usize) -> ChunkIter {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn chunks(self, blocksz: usize) -> Vec<(usize, Block)> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/mem.rs:69:8
[INFO] [stdout]    |
[INFO] [stdout] 68 | impl ChunkIter {
[INFO] [stdout]    | -------------- associated function in this implementation
[INFO] [stdout] 69 |     fn new(block: Block, pos: usize, blocksz: usize) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ItemsAllocator` is never constructed
[INFO] [stdout]    --> src/mem.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct ItemsAllocator<T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ItemsAllocator` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `reserve`, and `release_back` are never used
[INFO] [stdout]    --> src/mem.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | / impl <T> ItemsAllocator<T> 
[INFO] [stdout] 108 | | where T: 'static+PartialEq+Hash+Eq+Send+Clone {
[INFO] [stdout]     | |_____________________________________________- associated items in this implementation
[INFO] [stdout] 109 |       pub fn new(limit: usize) -> Self {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |       pub async fn reserve(&self, t: T) {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |       pub async fn release_back(&self, t: T, reason: &str) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `limit` is never read
[INFO] [stdout]    --> src/mem.rs:151:5
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub struct Allocator {
[INFO] [stdout]     |            --------- field in this struct
[INFO] [stdout] 150 |     inner: Arc<AllocatorInner>,
[INFO] [stdout] 151 |     limit: usize,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `Allocator` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/mem.rs:155:12
[INFO] [stdout]     |
[INFO] [stdout] 154 | impl Allocator {
[INFO] [stdout]     | -------------- associated items in this implementation
[INFO] [stdout] 155 |     pub fn new(limit: usize) -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 159 |     pub fn with_callback(limit: usize, callback: AllocCallback) -> Self {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 163 |     fn with_callback_opt(limit: usize, callback: Option<AllocCallback>) -> Self {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 177 |     pub async fn alloc_vec(&self, sz: usize) -> Vec<u8> {
[INFO] [stdout]     |                  ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 188 |     pub async fn alloc(&self, sz: usize) -> Buffer {
[INFO] [stdout]     |                  ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 194 |     pub async fn alloc_block(&self, sz: usize) -> Block {
[INFO] [stdout]     |                  ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn empty_block(&self) -> Block {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 203 |     pub fn to_block(&self, ffibuf: Buffer) -> Block {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 225 |     pub fn try_reserve(&self, sz: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 241 |     pub async fn reserve(&self, sz: usize) {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 259 |     pub fn free(&self, buf: Buffer) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 265 |     pub fn free_vec(&self, vec: Vec<u8>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `from_vec`, `from_string`, `alloc`, and `free` are never used
[INFO] [stdout]    --> src/mem.rs:314:12
[INFO] [stdout]     |
[INFO] [stdout] 313 | impl Buffer {
[INFO] [stdout]     | ----------- associated functions in this implementation
[INFO] [stdout] 314 |     pub fn from_vec(mut v: Vec<u8>) -> Buffer {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 331 |     pub fn from_string(s: String) -> Buffer {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 336 |     pub fn alloc(sz: usize) -> Buffer {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 341 |     pub fn free(buf: Buffer) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ptr` and `len` are never read
[INFO] [stdout]    --> src/mem.rs:364:9
[INFO] [stdout]     |
[INFO] [stdout] 363 | pub struct GoBuffer {
[INFO] [stdout]     |            -------- fields in this struct
[INFO] [stdout] 364 |     pub ptr: *mut u8,
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 365 |     pub len: usize,
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `GoBuffer` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `from_ptr` and `incr_cpy` are never used
[INFO] [stdout]    --> src/mem.rs:381:12
[INFO] [stdout]     |
[INFO] [stdout] 380 | impl GoBuffer {
[INFO] [stdout]     | ------------- associated items in this implementation
[INFO] [stdout] 381 |     pub fn from_ptr(ptr: *mut u8, len: usize) -> GoBuffer {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 385 |     pub unsafe fn incr_cpy(&self, src: *const u8, count: usize) -> GoBuffer {
[INFO] [stdout]     |                   ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `trim` is never used
[INFO] [stdout]   --> src/mem.rs:36:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl Block {
[INFO] [stdout]    | ---------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 36 |     pub fn trim(&mut self, size: usize) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ItemsAllocator` is never constructed
[INFO] [stdout]    --> src/mem.rs:101:12
[INFO] [stdout]     |
[INFO] [stdout] 101 | pub struct ItemsAllocator<T> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `ItemsAllocator` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `reserve`, and `release_back` are never used
[INFO] [stdout]    --> src/mem.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 107 | / impl <T> ItemsAllocator<T> 
[INFO] [stdout] 108 | | where T: 'static+PartialEq+Hash+Eq+Send+Clone {
[INFO] [stdout]     | |_____________________________________________- associated items in this implementation
[INFO] [stdout] 109 |       pub fn new(limit: usize) -> Self {
[INFO] [stdout]     |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 117 |       pub async fn reserve(&self, t: T) {
[INFO] [stdout]     |                    ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 130 |       pub async fn release_back(&self, t: T, reason: &str) {
[INFO] [stdout]     |                    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `empty_block`, `reserve`, `free`, and `free_vec` are never used
[INFO] [stdout]    --> src/mem.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 154 | impl Allocator {
[INFO] [stdout]     | -------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 199 |     pub fn empty_block(&self) -> Block {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 241 |     pub async fn reserve(&self, sz: usize) {
[INFO] [stdout]     |                  ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 259 |     pub fn free(&self, buf: Buffer) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 265 |     pub fn free_vec(&self, vec: Vec<u8>) {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `alloc` is never used
[INFO] [stdout]    --> src/mem.rs:336:12
[INFO] [stdout]     |
[INFO] [stdout] 313 | impl Buffer {
[INFO] [stdout]     | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 336 |     pub fn alloc(sz: usize) -> Buffer {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.99s
[INFO] running `Command { std: "docker" "inspect" "638fbbd80e1297064b0f4b62d26aaa5b174d37ad3e56fbe52e4cc3536ba12ffc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "638fbbd80e1297064b0f4b62d26aaa5b174d37ad3e56fbe52e4cc3536ba12ffc", kill_on_drop: false }`
[INFO] [stdout] 638fbbd80e1297064b0f4b62d26aaa5b174d37ad3e56fbe52e4cc3536ba12ffc