[INFO] cloning repository https://github.com/charliethomson/arraylist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/charliethomson/arraylist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliethomson%2Farraylist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliethomson%2Farraylist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b6d16fe34792c4c4bd6f956d94a9b3d57cc887ee
[INFO] checking charliethomson/arraylist against try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcharliethomson%2Farraylist" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/charliethomson/arraylist
[INFO] finished tweaking git repo https://github.com/charliethomson/arraylist
[INFO] tweaked toml for git repo https://github.com/charliethomson/arraylist written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/charliethomson/arraylist on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/charliethomson/arraylist 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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a15de17e7841a5bc9763819a9f08d8c655c4fcc70106fa07faf09a70cbfd6720
[INFO] running `Command { std: "docker" "start" "-a" "a15de17e7841a5bc9763819a9f08d8c655c4fcc70106fa07faf09a70cbfd6720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a15de17e7841a5bc9763819a9f08d8c655c4fcc70106fa07faf09a70cbfd6720", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a15de17e7841a5bc9763819a9f08d8c655c4fcc70106fa07faf09a70cbfd6720", kill_on_drop: false }`
[INFO] [stdout] a15de17e7841a5bc9763819a9f08d8c655c4fcc70106fa07faf09a70cbfd6720
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4e35f45961ac33f5e9356d2c04deb842cb954ed4d8350d4bccc816dd637ba03
[INFO] running `Command { std: "docker" "start" "-a" "c4e35f45961ac33f5e9356d2c04deb842cb954ed4d8350d4bccc816dd637ba03", kill_on_drop: false }`
[INFO] [stderr]     Checking dynamic_array v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the feature `alloc_layout_extra` has been stable since 1.95.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc_layout_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `alloc_layout_extra` has been stable since 1.95.0 and no longer requires an attribute to enable
[INFO] [stdout]  --> src/main.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(alloc_layout_extra)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(stable_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:332:5
[INFO] [stdout]     |
[INFO] [stdout] 332 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_pow2` is never used
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn get_next_pow2(num: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]   --> src/main.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Array<T>
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/main.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<T: Display + Copy + PartialEq> Array<T> {
[INFO] [stdout]    | -------------------------------------------- associated function in this implementation
[INFO] [stdout] 31 |     unsafe fn from(arr: *mut T, size: usize) -> Array<T> {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:37:15
[INFO] [stdout]     |
[INFO] [stdout]  36 | } impl<T: Copy + Display> Array<T> {
[INFO] [stdout]     |   -------------------------------- associated items in this implementation
[INFO] [stdout]  37 |     unsafe fn new(size: usize) -> Array<T> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout]  46 |     unsafe fn take_vec(v: Vec<T>) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  51 |     unsafe fn from_vec(v: &Vec<T>) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |     unsafe fn from_raw_buf(buf: *mut T, size: usize) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  63 |     unsafe fn resize(&mut self, size: usize) {
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  77 |     unsafe fn copy(&self) -> Array<T> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     fn len(&self) -> usize {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     unsafe fn clear(&mut self) {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  91 |     unsafe fn get(&self, index: usize) -> Result<T, String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     unsafe fn set(&self, index: usize, value: T) -> Result<(), String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     unsafe fn shift_from(&mut self, index: usize, amt: isize) {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayListIter` is never constructed
[INFO] [stdout]    --> src/main.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 | struct ArrayListIter<T>
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 191 | impl<T: Copy + PartialEq + Display> ArrayListIter<T> {
[INFO] [stdout]     | ---------------------------------------------------- associated function in this implementation
[INFO] [stdout] 192 |     fn new(list: ArrayList<T>) -> ArrayListIter<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayList` is never constructed
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 | struct ArrayList<T>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:223:15
[INFO] [stdout]     |
[INFO] [stdout] 222 | impl<T: Copy + Display + PartialEq> ArrayList<T> {
[INFO] [stdout]     | ------------------------------------------------ associated items in this implementation
[INFO] [stdout] 223 |     unsafe fn new() -> ArrayList<T> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 |     unsafe fn from_vec(v: &Vec<T>) -> ArrayList<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     unsafe fn get(&self, index: usize) -> T {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 247 |     unsafe fn set(&self, index: usize, value: T) -> Result<(), String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     unsafe fn push(&mut self, index: usize, value: T) {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 264 |     unsafe fn push_front(&mut self, value: T) {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     unsafe fn push_back(&mut self, value: T) {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 272 |     unsafe fn pop(&mut self, index: usize) -> Result<T, String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 |     unsafe fn pop_front(&mut self) -> Result<T, String> {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 294 |     unsafe fn pop_back(&mut self) -> Result<T, String> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:243:30
[INFO] [stdout]     |
[INFO] [stdout] 243 |             Err(e) => panic!(e),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 243 |             Err(e) => panic!("{}", e),
[INFO] [stdout]     |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:258:30
[INFO] [stdout]     |
[INFO] [stdout] 258 |             Err(e) => panic!(e),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 258 |             Err(e) => panic!("{}", e),
[INFO] [stdout]     |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:280:34
[INFO] [stdout]     |
[INFO] [stdout] 280 |                 Err(e) => panic!(e),
[INFO] [stdout]     |                                  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 280 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]     |                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/main.rs:332:5
[INFO] [stdout]     |
[INFO] [stdout] 332 |     unsafe {
[INFO] [stdout]     |     ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_next_pow2` is never used
[INFO] [stdout]  --> src/main.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn get_next_pow2(num: usize) -> usize {
[INFO] [stdout]   |    ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Array` is never constructed
[INFO] [stdout]   --> src/main.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | struct Array<T>
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `from` is never used
[INFO] [stdout]   --> src/main.rs:31:15
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl<T: Display + Copy + PartialEq> Array<T> {
[INFO] [stdout]    | -------------------------------------------- associated function in this implementation
[INFO] [stdout] 31 |     unsafe fn from(arr: *mut T, size: usize) -> Array<T> {
[INFO] [stdout]    |               ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:37:15
[INFO] [stdout]     |
[INFO] [stdout]  36 | } impl<T: Copy + Display> Array<T> {
[INFO] [stdout]     |   -------------------------------- associated items in this implementation
[INFO] [stdout]  37 |     unsafe fn new(size: usize) -> Array<T> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout]  46 |     unsafe fn take_vec(v: Vec<T>) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  51 |     unsafe fn from_vec(v: &Vec<T>) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  57 |     unsafe fn from_raw_buf(buf: *mut T, size: usize) -> Array<T> {
[INFO] [stdout]     |               ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  63 |     unsafe fn resize(&mut self, size: usize) {
[INFO] [stdout]     |               ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  77 |     unsafe fn copy(&self) -> Array<T> {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     fn len(&self) -> usize {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] ...
[INFO] [stdout]  85 |     unsafe fn clear(&mut self) {
[INFO] [stdout]     |               ^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  91 |     unsafe fn get(&self, index: usize) -> Result<T, String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     unsafe fn set(&self, index: usize, value: T) -> Result<(), String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     unsafe fn shift_from(&mut self, index: usize, amt: isize) {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayListIter` is never constructed
[INFO] [stdout]    --> src/main.rs:183:8
[INFO] [stdout]     |
[INFO] [stdout] 183 | struct ArrayListIter<T>
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]    --> src/main.rs:192:8
[INFO] [stdout]     |
[INFO] [stdout] 191 | impl<T: Copy + PartialEq + Display> ArrayListIter<T> {
[INFO] [stdout]     | ---------------------------------------------------- associated function in this implementation
[INFO] [stdout] 192 |     fn new(list: ArrayList<T>) -> ArrayListIter<T> {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ArrayList` is never constructed
[INFO] [stdout]    --> src/main.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 | struct ArrayList<T>
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/main.rs:223:15
[INFO] [stdout]     |
[INFO] [stdout] 222 | impl<T: Copy + Display + PartialEq> ArrayList<T> {
[INFO] [stdout]     | ------------------------------------------------ associated items in this implementation
[INFO] [stdout] 223 |     unsafe fn new() -> ArrayList<T> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 232 |     unsafe fn from_vec(v: &Vec<T>) -> ArrayList<T> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 240 |     unsafe fn get(&self, index: usize) -> T {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 247 |     unsafe fn set(&self, index: usize, value: T) -> Result<(), String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 251 |     unsafe fn push(&mut self, index: usize, value: T) {
[INFO] [stdout]     |               ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 264 |     unsafe fn push_front(&mut self, value: T) {
[INFO] [stdout]     |               ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 268 |     unsafe fn push_back(&mut self, value: T) {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 272 |     unsafe fn pop(&mut self, index: usize) -> Result<T, String> {
[INFO] [stdout]     |               ^^^
[INFO] [stdout] ...
[INFO] [stdout] 290 |     unsafe fn pop_front(&mut self) -> Result<T, String> {
[INFO] [stdout]     |               ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 294 |     unsafe fn pop_back(&mut self) -> Result<T, String> {
[INFO] [stdout]     |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:243:30
[INFO] [stdout]     |
[INFO] [stdout] 243 |             Err(e) => panic!(e),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 243 |             Err(e) => panic!("{}", e),
[INFO] [stdout]     |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:258:30
[INFO] [stdout]     |
[INFO] [stdout] 258 |             Err(e) => panic!(e),
[INFO] [stdout]     |                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 258 |             Err(e) => panic!("{}", e),
[INFO] [stdout]     |                              +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/main.rs:280:34
[INFO] [stdout]     |
[INFO] [stdout] 280 |                 Err(e) => panic!(e),
[INFO] [stdout]     |                                  ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 280 |                 Err(e) => panic!("{}", e),
[INFO] [stdout]     |                                  +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "c4e35f45961ac33f5e9356d2c04deb842cb954ed4d8350d4bccc816dd637ba03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e35f45961ac33f5e9356d2c04deb842cb954ed4d8350d4bccc816dd637ba03", kill_on_drop: false }`
[INFO] [stdout] c4e35f45961ac33f5e9356d2c04deb842cb954ed4d8350d4bccc816dd637ba03
