[INFO] updating cached repository https://github.com/nambrosini/ads
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 0bc592d5c0a2022e7e73fa71303c130b2d0b8a61
[INFO] checking nambrosini/ads against try#e689e5eaefe96e6dc3ed5bb629c521b7d207aff7 for pr-64398
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnambrosini%2Fads" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nambrosini/ads on toolchain e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/nambrosini/ads
[INFO] finished tweaking git repo https://github.com/nambrosini/ads
[INFO] tweaked toml for git repo https://github.com/nambrosini/ads written to work/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/nambrosini/ads already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+e689e5eaefe96e6dc3ed5bb629c521b7d207aff7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 56e2cb2c2661f80fac08e54c5ede66b76467b981932413c0257425b951b81cb3
[INFO] running `"docker" "start" "-a" "56e2cb2c2661f80fac08e54c5ede66b76467b981932413c0257425b951b81cb3"`
[INFO] [stderr]     Checking ads v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/p01/stack.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn pop(&mut self, v: T) -> Option<T> {
[INFO] [stderr]    |                           ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Stack`
[INFO] [stderr]  --> src/p01/stack.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub struct Stack<T> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]  --> src/p01/stack.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     pub fn new(max: usize) -> Stack<T> {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/p01/stack.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn push(&mut self, v: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/p01/stack.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn pop(&mut self, v: T) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/p01/stack.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/p01/stack.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_full`
[INFO] [stderr]   --> src/p01/stack.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn is_full(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `ggt`
[INFO] [stderr]  --> src/p01/mod.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | fn ggt(a: i32, b: i32) -> i32 {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `kgv`
[INFO] [stderr]   --> src/p01/mod.rs:22:1
[INFO] [stderr]    |
[INFO] [stderr] 22 | pub fn kgv(a: i32, b: i32) -> i32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `v`
[INFO] [stderr]   --> src/p01/stack.rs:20:27
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn pop(&mut self, v: T) -> Option<T> {
[INFO] [stderr]    |                           ^ help: consider prefixing with an underscore: `_v`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `push`
[INFO] [stderr]   --> src/p01/stack.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn push(&mut self, v: T) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `pop`
[INFO] [stderr]   --> src/p01/stack.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     pub fn pop(&mut self, v: T) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/p01/stack.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn peek(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_empty`
[INFO] [stderr]   --> src/p01/stack.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 |     pub fn is_empty(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_full`
[INFO] [stderr]   --> src/p01/stack.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 |     pub fn is_full(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.68s
[INFO] running `"docker" "inspect" "56e2cb2c2661f80fac08e54c5ede66b76467b981932413c0257425b951b81cb3"`
[INFO] running `"docker" "rm" "-f" "56e2cb2c2661f80fac08e54c5ede66b76467b981932413c0257425b951b81cb3"`
[INFO] [stdout] 56e2cb2c2661f80fac08e54c5ede66b76467b981932413c0257425b951b81cb3