[INFO] cloning repository https://github.com/AnHaechan/prusti-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AnHaechan/prusti-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnHaechan%2Fprusti-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnHaechan%2Fprusti-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] a874d47a0ec2f46a49c026fc48c8fe05de399874
[INFO] checking AnHaechan/prusti-test against master#36b21637e93b038453924d3c66821089e71d8baa for pr-143164
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAnHaechan%2Fprusti-test" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/AnHaechan/prusti-test
[INFO] finished tweaking git repo https://github.com/AnHaechan/prusti-test
[INFO] tweaked toml for git repo https://github.com/AnHaechan/prusti-test written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/AnHaechan/prusti-test on toolchain 36b21637e93b038453924d3c66821089e71d8baa
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/AnHaechan/prusti-test 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" "+36b21637e93b038453924d3c66821089e71d8baa" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prusti-std v0.1.8
[INFO] [stderr]   Downloaded prusti-contracts-proc-macros v0.1.8
[INFO] [stderr]   Downloaded prusti-contracts v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 95e9a04619f16690f335276a341fd58c51d290bc92f0110cc5ccae50792fbdc7
[INFO] running `Command { std: "docker" "start" "-a" "95e9a04619f16690f335276a341fd58c51d290bc92f0110cc5ccae50792fbdc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "95e9a04619f16690f335276a341fd58c51d290bc92f0110cc5ccae50792fbdc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95e9a04619f16690f335276a341fd58c51d290bc92f0110cc5ccae50792fbdc7", kill_on_drop: false }`
[INFO] [stdout] 95e9a04619f16690f335276a341fd58c51d290bc92f0110cc5ccae50792fbdc7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:cf8efcab8866f2cf4285301c7418e2f4f2a9b088c91ba69c40d5b659f81557f7" "/opt/rustwide/cargo-home/bin/cargo" "+36b21637e93b038453924d3c66821089e71d8baa" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cbb1317ac2cc26ee8f9f8966238e8d4eda6c7dbdaf6ebc75c09f51f6e1ecd689
[INFO] running `Command { std: "docker" "start" "-a" "cbb1317ac2cc26ee8f9f8966238e8d4eda6c7dbdaf6ebc75c09f51f6e1ecd689", kill_on_drop: false }`
[INFO] [stderr]    Compiling prusti-contracts-proc-macros v0.1.8
[INFO] [stderr]     Checking prusti-contracts v0.1.8
[INFO] [stderr]     Checking prusti-std v0.1.8
[INFO] [stderr]     Checking prusti-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unexpected `cfg` condition name: `prusti`
[INFO] [stdout]    --> src/list_generic_with_peek.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | #[cfg(prusti)]
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(prusti)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(prusti)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max` is never used
[INFO] [stdout]  --> src/max.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn max(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max3` is never used
[INFO] [stdout]   --> src/max.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn max3(a: i32, b: i32, c: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restrictive_square` is never used
[INFO] [stdout]  --> src/testing.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn restrictive_square(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abs` is never used
[INFO] [stdout]   --> src/testing.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn abs (x: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/list_generic_with_peek.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {}
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/list_generic_with_peek.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct List<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/list_generic_with_peek.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Link<T> = Option<Box<Node<T>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/list_generic_with_peek.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Node<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:48:12
[INFO] [stdout]     |
[INFO] [stdout] 44  | impl<T> List<T> {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48  |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53  |     fn is_empty(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     pub fn lookup(&self, index: usize) -> &T {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73  |     pub fn push(&mut self, elem: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     pub fn try_pop(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn pop(&mut self) -> T {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub fn peek(&self) -> &T {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn peek_mut(&mut self) -> &mut T {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `link_lookup` is never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn link_lookup<T>(link: &Link<T>, index: usize) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `link_len` is never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:164:4
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn link_len<T>(link: &Link<T>) -> usize {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unexpected `cfg` condition name: `prusti`
[INFO] [stdout]    --> src/list_generic_with_peek.rs:171:7
[INFO] [stdout]     |
[INFO] [stdout] 171 | #[cfg(prusti)]
[INFO] [stdout]     |       ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: expected names are: `docsrs`, `feature`, and `test` and 31 more
[INFO] [stdout]     = help: consider using a Cargo feature instead
[INFO] [stdout]     = help: or consider adding in `Cargo.toml` the `check-cfg` lint config for the lint:
[INFO] [stdout]              [lints.rust]
[INFO] [stdout]              unexpected_cfgs = { level = "warn", check-cfg = ['cfg(prusti)'] }
[INFO] [stdout]     = help: or consider adding `println!("cargo::rustc-check-cfg=cfg(prusti)");` to the top of the `build.rs`
[INFO] [stdout]     = note: see <https://doc.rust-lang.org/nightly/rustc/check-cfg/cargo-specifics.html> for more information about checking conditional configuration
[INFO] [stdout]     = note: `#[warn(unexpected_cfgs)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max` is never used
[INFO] [stdout]  --> src/max.rs:6:4
[INFO] [stdout]   |
[INFO] [stdout] 6 | fn max(a: i32, b: i32) -> i32 {
[INFO] [stdout]   |    ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `max3` is never used
[INFO] [stdout]   --> src/max.rs:15:4
[INFO] [stdout]    |
[INFO] [stdout] 15 | fn max3(a: i32, b: i32, c: i32) -> i32 {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `restrictive_square` is never used
[INFO] [stdout]  --> src/testing.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn restrictive_square(x: i32) -> i32 {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `abs` is never used
[INFO] [stdout]   --> src/testing.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub fn abs (x: i32) -> i32 {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]  --> src/list_generic_with_peek.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn main() {}
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `List` is never constructed
[INFO] [stdout]  --> src/list_generic_with_peek.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct List<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Link` is never used
[INFO] [stdout]   --> src/list_generic_with_peek.rs:10:6
[INFO] [stdout]    |
[INFO] [stdout] 10 | type Link<T> = Option<Box<Node<T>>>;
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/list_generic_with_peek.rs:12:8
[INFO] [stdout]    |
[INFO] [stdout] 12 | struct Node<T> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple associated items are never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:48:12
[INFO] [stdout]     |
[INFO] [stdout] 44  | impl<T> List<T> {
[INFO] [stdout]     | --------------- associated items in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 48  |     pub fn len(&self) -> usize {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 53  |     fn is_empty(&self) -> bool {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 58  |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 65  |     pub fn lookup(&self, index: usize) -> &T {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 73  |     pub fn push(&mut self, elem: T) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 103 |     pub fn try_pop(&mut self) -> Option<T> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 118 |     pub fn pop(&mut self) -> T {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 124 |     pub fn peek(&self) -> &T {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 137 |     pub fn peek_mut(&mut self) -> &mut T {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `link_lookup` is never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:149:4
[INFO] [stdout]     |
[INFO] [stdout] 149 | fn link_lookup<T>(link: &Link<T>, index: usize) -> &T {
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `link_len` is never used
[INFO] [stdout]    --> src/list_generic_with_peek.rs:164:4
[INFO] [stdout]     |
[INFO] [stdout] 164 | fn link_len<T>(link: &Link<T>) -> usize {
[INFO] [stdout]     |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.82s
[INFO] running `Command { std: "docker" "inspect" "cbb1317ac2cc26ee8f9f8966238e8d4eda6c7dbdaf6ebc75c09f51f6e1ecd689", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbb1317ac2cc26ee8f9f8966238e8d4eda6c7dbdaf6ebc75c09f51f6e1ecd689", kill_on_drop: false }`
[INFO] [stdout] cbb1317ac2cc26ee8f9f8966238e8d4eda6c7dbdaf6ebc75c09f51f6e1ecd689
