[INFO] cloning repository https://github.com/mikeleppane/Crust-of-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikeleppane/Crust-of-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeleppane%2FCrust-of-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeleppane%2FCrust-of-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b4e5a00ce068794a2fef0b86a454ab48e44f4764
[INFO] testing mikeleppane/Crust-of-Rust against master#2fd6efc32704647e64d3d646d21c4c68eae100e4 for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikeleppane%2FCrust-of-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] started tweaking git repo https://github.com/mikeleppane/Crust-of-Rust
[INFO] finished tweaking git repo https://github.com/mikeleppane/Crust-of-Rust
[INFO] tweaked toml for git repo https://github.com/mikeleppane/Crust-of-Rust written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mikeleppane/Crust-of-Rust on toolchain 2fd6efc32704647e64d3d646d21c4c68eae100e4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mikeleppane/Crust-of-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" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded output_vt100 v0.1.3
[INFO] [stderr]   Downloaded proc-macro2 v1.0.50
[INFO] [stderr]   Downloaded pretty_assertions v1.3.0
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0f81df57115899e7d4bc4e4f4b805c60b4ad1e5ae0dd8c641eb622ee9f5a700c
[INFO] running `Command { std: "docker" "start" "-a" "0f81df57115899e7d4bc4e4f4b805c60b4ad1e5ae0dd8c641eb622ee9f5a700c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f81df57115899e7d4bc4e4f4b805c60b4ad1e5ae0dd8c641eb622ee9f5a700c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f81df57115899e7d4bc4e4f4b805c60b4ad1e5ae0dd8c641eb622ee9f5a700c", kill_on_drop: false }`
[INFO] [stdout] 0f81df57115899e7d4bc4e4f4b805c60b4ad1e5ae0dd8c641eb622ee9f5a700c
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d84244b4497e736f5dd97736797976c51e2d6f468e396ec5c15d504c295c784b
[INFO] running `Command { std: "docker" "start" "-a" "d84244b4497e736f5dd97736797976c51e2d6f468e396ec5c15d504c295c784b", kill_on_drop: false }`
[INFO] [stderr]    Compiling diff v0.1.13
[INFO] [stderr]    Compiling yansi v0.5.1
[INFO] [stderr]    Compiling pretty_assertions v1.3.0
[INFO] [stderr]    Compiling crust-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: constant `LOCKED` is never used
[INFO] [stdout]  --> src/atomics_and_memory_ordering/atomics.rs:4:7
[INFO] [stdout]   |
[INFO] [stdout] 4 | const LOCKED: bool = true;
[INFO] [stdout]   |       ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `UNLOCKED` is never used
[INFO] [stdout]  --> src/atomics_and_memory_ordering/atomics.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | const UNLOCKED: bool = false;
[INFO] [stdout]   |       ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `MyMutex` is never constructed
[INFO] [stdout]  --> src/atomics_and_memory_ordering/atomics.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct MyMutex<T> {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `with_lock` are never used
[INFO] [stdout]   --> src/atomics_and_memory_ordering/atomics.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 14 | impl<T> MyMutex<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 15 |     pub fn new(t: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     fn with_lock<R>(&self, f: impl FnOnce(&mut T) -> R) -> R {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Sender` is never constructed
[INFO] [stdout]  --> src/channels/panama.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Sender<T> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `send` is never used
[INFO] [stdout]   --> src/channels/panama.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | impl<T> Sender<T> {
[INFO] [stdout]    | ----------------- method in this implementation
[INFO] [stdout] 33 |     pub fn send(&mut self, t: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Receiver` is never constructed
[INFO] [stdout]   --> src/channels/panama.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 | pub struct Receiver<T> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `recv` is never used
[INFO] [stdout]   --> src/channels/panama.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 46 | impl<T> Receiver<T> {
[INFO] [stdout]    | ------------------- method in this implementation
[INFO] [stdout] 47 |     pub fn recv(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Inner` is never constructed
[INFO] [stdout]   --> src/channels/panama.rs:77:12
[INFO] [stdout]    |
[INFO] [stdout] 77 | pub struct Inner<T> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Shared` is never constructed
[INFO] [stdout]   --> src/channels/panama.rs:82:12
[INFO] [stdout]    |
[INFO] [stdout] 82 | pub struct Shared<T> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `channel` is never used
[INFO] [stdout]   --> src/channels/panama.rs:87:8
[INFO] [stdout]    |
[INFO] [stdout] 87 | pub fn channel<T>() -> (Sender<T>, Receiver<T>) {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hei` is never used
[INFO] [stdout]  --> src/dispatch_and_fat_pointers/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Hei {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strlen` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn strlen(s: impl AsRef<str>) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strlen_dyn` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn strlen_dyn(s: Box<dyn AsRef<str>>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bool_then` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn bool_then<T>(b: bool, f: impl FnOnce() -> T) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `HeiAsRef` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait HeiAsRef: Hei + AsRef<str> {}
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `baz` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn baz(s: &dyn HeiAsRef) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_of_trait_object` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn slice_of_trait_object(v: &[&dyn AsRef<str>]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Boks` is never constructed
[INFO] [stdout]  --> src/drop_check/boks.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Boks<T> {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `ny` is never used
[INFO] [stdout]   --> src/drop_check/boks.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | impl<T> Boks<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 32 |     pub fn ny(t: T) -> Self {
[INFO] [stdout]    |            ^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IteratorExt` is never used
[INFO] [stdout]  --> src/iterators/iterator.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IteratorExt: Iterator + Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Flatten` is never constructed
[INFO] [stdout]   --> src/iterators/iterator.rs:19:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub struct Flatten<O>
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/iterators/iterator.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | / impl<O> Flatten<O>
[INFO] [stdout] 30 | | where
[INFO] [stdout] 31 | |     O: Iterator,
[INFO] [stdout] 32 | |     O::Item: IntoIterator,
[INFO] [stdout]    | |__________________________- associated function in this implementation
[INFO] [stdout] 33 |   {
[INFO] [stdout] 34 |       fn new(iter: O) -> Self {
[INFO] [stdout]    |          ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `flatten` is never used
[INFO] [stdout]   --> src/iterators/iterator.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub fn flatten<I>(iter: I) -> Flatten<I::IntoIter>
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strtok` is never used
[INFO] [stdout]  --> src/subtyping_and_variance/strtok.rs:4:8
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn strtok<'a>(s: &'_ mut &'a str, delimiter: char) -> &'a str {
[INFO] [stdout]   |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::str::<impl str>::len` that must be used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     s.len();
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _ = s.len();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary allocation, use `&` instead
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:66:29
[INFO] [stdout]    |
[INFO] [stdout] 66 |     slice_of_trait_object(&[Box::new("hello").as_ref()])
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_allocation)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/drop_check/boks.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |         unsafe { Box::from_raw(self.p) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         unsafe { let _ = Box::from_raw(self.p); };
[INFO] [stdout]    |                  +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/rc.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 64 -             drop(inner);
[INFO] [stdout] 64 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/refcell.rs:26:19
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn borrow(&self) -> Option<Ref<T>> {
[INFO] [stdout]    |                   ^^^^^            ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/refcell.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<T>> {
[INFO] [stdout]    |                       ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.38s
[INFO] running `Command { std: "docker" "inspect" "d84244b4497e736f5dd97736797976c51e2d6f468e396ec5c15d504c295c784b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d84244b4497e736f5dd97736797976c51e2d6f468e396ec5c15d504c295c784b", kill_on_drop: false }`
[INFO] [stdout] d84244b4497e736f5dd97736797976c51e2d6f468e396ec5c15d504c295c784b
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b65104c329349db1ca4b901f4161d21e55a73427efb3c2e98114292837f40055
[INFO] running `Command { std: "docker" "start" "-a" "b65104c329349db1ca4b901f4161d21e55a73427efb3c2e98114292837f40055", kill_on_drop: false }`
[INFO] [stderr]    Compiling crust-of-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `pretty_assertions::assert_eq`
[INFO] [stdout]   --> src/drop_check/boks.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     use pretty_assertions::assert_eq;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boks`
[INFO] [stdout]   --> src/drop_check/boks.rs:52:13
[INFO] [stdout]    |
[INFO] [stdout] 52 |         let boks = Boks::ny(&mut y);
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_boks`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Hei` is never used
[INFO] [stdout]  --> src/dispatch_and_fat_pointers/main.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait Hei {
[INFO] [stdout]   |           ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strlen` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:31:4
[INFO] [stdout]    |
[INFO] [stdout] 31 | fn strlen(s: impl AsRef<str>) -> usize {
[INFO] [stdout]    |    ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `strlen_dyn` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:35:4
[INFO] [stdout]    |
[INFO] [stdout] 35 | fn strlen_dyn(s: Box<dyn AsRef<str>>) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `bool_then` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:39:8
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn bool_then<T>(b: bool, f: impl FnOnce() -> T) -> Option<T> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `HeiAsRef` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:47:11
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub trait HeiAsRef: Hei + AsRef<str> {}
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `baz` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:49:8
[INFO] [stdout]    |
[INFO] [stdout] 49 | pub fn baz(s: &dyn HeiAsRef) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `slice_of_trait_object` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:55:8
[INFO] [stdout]    |
[INFO] [stdout] 55 | pub fn slice_of_trait_object(v: &[&dyn AsRef<str>]) {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `IteratorExt` is never used
[INFO] [stdout]  --> src/iterators/iterator.rs:1:11
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub trait IteratorExt: Iterator + Sized {
[INFO] [stdout]   |           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `core::str::<impl str>::len` that must be used
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:52:5
[INFO] [stdout]    |
[INFO] [stdout] 52 |     s.len();
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 52 |     let _ = s.len();
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary allocation, use `&` instead
[INFO] [stdout]   --> src/dispatch_and_fat_pointers/main.rs:66:29
[INFO] [stdout]    |
[INFO] [stdout] 66 |     slice_of_trait_object(&[Box::new("hello").as_ref()])
[INFO] [stdout]    |                             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_allocation)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> src/drop_check/boks.rs:10:18
[INFO] [stdout]    |
[INFO] [stdout] 10 |         unsafe { Box::from_raw(self.p) };
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 10 |         unsafe { let _ = Box::from_raw(self.p); };
[INFO] [stdout]    |                  +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/rc.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    |
[INFO] [stdout] 64 -             drop(inner);
[INFO] [stdout] 64 +             let _ = inner;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/refcell.rs:26:19
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn borrow(&self) -> Option<Ref<T>> {
[INFO] [stdout]    |                   ^^^^^            ^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 26 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |                                        +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/smart_pointers_and_interior_mutability/refcell.rs:40:23
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<T>> {
[INFO] [stdout]    |                       ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                       |
[INFO] [stdout]    |                       the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[INFO] [stdout]    |                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.19s
[INFO] running `Command { std: "docker" "inspect" "b65104c329349db1ca4b901f4161d21e55a73427efb3c2e98114292837f40055", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b65104c329349db1ca4b901f4161d21e55a73427efb3c2e98114292837f40055", kill_on_drop: false }`
[INFO] [stdout] b65104c329349db1ca4b901f4161d21e55a73427efb3c2e98114292837f40055
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+2fd6efc32704647e64d3d646d21c4c68eae100e4" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8d610f37aef1dd39605d50d7848de6804d154523950faca29a9717f17b1037cf
[INFO] running `Command { std: "docker" "start" "-a" "8d610f37aef1dd39605d50d7848de6804d154523950faca29a9717f17b1037cf", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `pretty_assertions::assert_eq`
[INFO] [stderr]   --> src/drop_check/boks.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 |     use pretty_assertions::assert_eq;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `boks`
[INFO] [stderr]   --> src/drop_check/boks.rs:52:13
[INFO] [stderr]    |
[INFO] [stderr] 52 |         let boks = Boks::ny(&mut y);
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_boks`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Hei` is never used
[INFO] [stderr]  --> src/dispatch_and_fat_pointers/main.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait Hei {
[INFO] [stderr]   |           ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `strlen` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:31:4
[INFO] [stderr]    |
[INFO] [stderr] 31 | fn strlen(s: impl AsRef<str>) -> usize {
[INFO] [stderr]    |    ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `strlen_dyn` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:35:4
[INFO] [stderr]    |
[INFO] [stderr] 35 | fn strlen_dyn(s: Box<dyn AsRef<str>>) -> usize {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `bool_then` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:39:8
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn bool_then<T>(b: bool, f: impl FnOnce() -> T) -> Option<T> {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `HeiAsRef` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:47:11
[INFO] [stderr]    |
[INFO] [stderr] 47 | pub trait HeiAsRef: Hei + AsRef<str> {}
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `baz` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:49:8
[INFO] [stderr]    |
[INFO] [stderr] 49 | pub fn baz(s: &dyn HeiAsRef) {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `slice_of_trait_object` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:55:8
[INFO] [stderr]    |
[INFO] [stderr] 55 | pub fn slice_of_trait_object(v: &[&dyn AsRef<str>]) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 | pub fn main() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `IteratorExt` is never used
[INFO] [stderr]  --> src/iterators/iterator.rs:1:11
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub trait IteratorExt: Iterator + Sized {
[INFO] [stderr]   |           ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `core::str::<impl str>::len` that must be used
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:52:5
[INFO] [stderr]    |
[INFO] [stderr] 52 |     s.len();
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 52 |     let _ = s.len();
[INFO] [stderr]    |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary allocation, use `&` instead
[INFO] [stderr]   --> src/dispatch_and_fat_pointers/main.rs:66:29
[INFO] [stderr]    |
[INFO] [stderr] 66 |     slice_of_trait_object(&[Box::new("hello").as_ref()])
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_allocation)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stderr]   --> src/drop_check/boks.rs:10:18
[INFO] [stderr]    |
[INFO] [stderr] 10 |         unsafe { Box::from_raw(self.p) };
[INFO] [stderr]    |                  ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 10 |         unsafe { let _ = Box::from_raw(self.p); };
[INFO] [stderr]    |                  +++++++                      +
[INFO] [stderr] 
[INFO] [stderr] warning: calls to `std::mem::drop` with a reference instead of an owned value does nothing
[INFO] [stderr]   --> src/smart_pointers_and_interior_mutability/rc.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |             drop(inner);
[INFO] [stderr]    |             ^^^^^-----^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  argument has type `&RcInner<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the expression or result
[INFO] [stderr]    |
[INFO] [stderr] 64 -             drop(inner);
[INFO] [stderr] 64 +             let _ = inner;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/smart_pointers_and_interior_mutability/refcell.rs:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn borrow(&self) -> Option<Ref<T>> {
[INFO] [stderr]    |                   ^^^^^            ^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                   |
[INFO] [stderr]    |                   the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 26 |     pub fn borrow(&self) -> Option<Ref<'_, T>> {
[INFO] [stderr]    |                                        +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/smart_pointers_and_interior_mutability/refcell.rs:40:23
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<T>> {
[INFO] [stderr]    |                       ^^^^^            ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                       |
[INFO] [stderr]    |                       the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn borrow_mut(&self) -> Option<RefMut<'_, T>> {
[INFO] [stderr]    |                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `crust-of-rust` (bin "crust-of-rust" test) generated 17 warnings (run `cargo fix --bin "crust-of-rust" -p crust-of-rust --tests` to apply 4 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/crust_of_rust-20b47d1d8f9f13fa)
[INFO] [stdout] 
[INFO] [stdout] running 29 tests
[INFO] [stdout] test channels::panama::tests::closed_rx ... ok
[INFO] [stdout] test channels::panama::tests::ping_pong ... ok
[INFO] [stdout] test declarative_macros::vecmac::tests::clone_2 ... ok
[INFO] [stdout] test declarative_macros::vecmac::tests::single ... ok
[INFO] [stdout] test declarative_macros::vecmac::tests::double ... ok
[INFO] [stdout] test declarative_macros::vecmac::tests::empty_vec ... ok
[INFO] [stdout] test declarative_macros::vecmac::tests::trailing ... ok
[INFO] [stdout] test channels::panama::tests::closed_tx ... ok
[INFO] [stdout] test iterators::iterator::tests::one ... ok
[INFO] [stdout] test iterators::iterator::tests::two ... ok
[INFO] [stdout] test iterators::iterator::tests::two_reverse ... ok
[INFO] [stdout] test iterators::iterator::tests::two_wide ... ok
[INFO] [stdout] test drop_check::boks::tests::it_works ... ok
[INFO] [stdout] test iterators::iterator::tests::both_ends ... ok
[INFO] [stdout] test iterators::iterator::tests::empty ... ok
[INFO] [stdout] test atomics_and_memory_ordering::atomics::tests::too_relaxed ... ok
[INFO] [stdout] test iterators::iterator::tests::empty_wide ... ok
[INFO] [stdout] test iterators::iterator::tests::two_wide_reverse ... ok
[INFO] [stdout] test lifetime_annotations::strsplit::tests::empty_tail ... ok
[INFO] [stdout] test lifetime_annotations::strsplit::tests::tail ... ok
[INFO] [stdout] test smart_pointers_and_interior_mutability::refcell::tests::it_works ... ok
[INFO] [stdout] test lifetime_annotations::strsplit::tests::test_until_char_with_unicode ... ok
[INFO] [stdout] test smart_pointers_and_interior_mutability::cell::tests::it_works ... ok
[INFO] [stdout] test subtyping_and_variance::strtok::tests::it_works ... ok
[INFO] [stdout] test smart_pointers_and_interior_mutability::rc::tests::it_works ... ok
[INFO] [stdout] test lifetime_annotations::strsplit::tests::test_until_char ... ok
[INFO] [stdout] test lifetime_annotations::strsplit::tests::it_works ... ok
[INFO] [stdout] test atomics_and_memory_ordering::atomics::tests::mutex_test ... FAILED
[INFO] [stdout] test atomics_and_memory_ordering::atomics::tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- atomics_and_memory_ordering::atomics::tests::mutex_test stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'atomics_and_memory_ordering::atomics::tests::mutex_test' (18) panicked at src/atomics_and_memory_ordering/atomics.rs:112:9:
[INFO] [stdout] assertion failed: `(left == right)`
[INFO] [stdout] 
[INFO] [stdout] [1mDiff[0m [31m< left[0m / [32mright >[0m :
[INFO] [stdout] [31m<[0m[1;48;5;52;31m1[0m
[INFO] [stdout] [32m>[0m[1;48;5;22;32m2[0m
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x610ef4602532 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x610ef4602532 - std[716c9a7a72e5c14e]::backtrace_rs::backtrace::trace_unsynchronized::<std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x610ef4602532 - std[716c9a7a72e5c14e]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x610ef4602532 - <<std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[c5ed12ab89cc536a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x610ef4616e0a - <core[c5ed12ab89cc536a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x610ef4616e0a - core[c5ed12ab89cc536a]::fmt::write
[INFO] [stdout]    6:     0x610ef4607366 - std[716c9a7a72e5c14e]::io::default_write_fmt::<alloc[9c68fdf4f4f29218]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x610ef4607366 - <alloc[9c68fdf4f4f29218]::vec::Vec<u8> as std[716c9a7a72e5c14e]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/io/mod.rs:1994:13
[INFO] [stdout]    8:     0x610ef45e08ff - <std[716c9a7a72e5c14e]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x610ef45e08ff - std[716c9a7a72e5c14e]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x610ef45fa819 - std[716c9a7a72e5c14e]::panicking::default_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:316:9
[INFO] [stdout]   11:     0x610ef4582bee - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   12:     0x610ef4582bee - test[64760d2bdea328cc]::test_main_with_exit_callback::<test[64760d2bdea328cc]::test_main::{closure#0}>::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x610ef45fa9d2 - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn for<'a, 'b> core[c5ed12ab89cc536a]::ops::function::Fn<(&'a std[716c9a7a72e5c14e]::panic::PanicHookInfo<'b>,), Output = ()> + core[c5ed12ab89cc536a]::marker::Sync + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::Fn<(&std[716c9a7a72e5c14e]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2220:9
[INFO] [stdout]   14:     0x610ef45fa9d2 - std[716c9a7a72e5c14e]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:833:13
[INFO] [stdout]   15:     0x610ef45e09b8 - std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:698:13
[INFO] [stdout]   16:     0x610ef45d8389 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_end_short_backtrace::<std[716c9a7a72e5c14e]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x610ef45e180d - __rustc[4f0b026143eab78e]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:689:5
[INFO] [stdout]   18:     0x610ef461751c - core[c5ed12ab89cc536a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x610ef455efea - crust_of_rust[c224ba496fc9539e]::atomics_and_memory_ordering::atomics::tests::mutex_test
[INFO] [stdout]                                at /opt/rustwide/workdir/src/atomics_and_memory_ordering/atomics.rs:112:9
[INFO] [stdout]   20:     0x610ef455c677 - crust_of_rust[c224ba496fc9539e]::atomics_and_memory_ordering::atomics::tests::mutex_test::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/atomics_and_memory_ordering/atomics.rs:87:20
[INFO] [stdout]   21:     0x610ef4568c16 - <crust_of_rust[c224ba496fc9539e]::atomics_and_memory_ordering::atomics::tests::mutex_test::{closure#0} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x610ef4576f9b - <fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x610ef4576f9b - test[64760d2bdea328cc]::__rust_begin_short_backtrace::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, fn() -> core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:663:18
[INFO] [stdout]   24:     0x610ef45837fa - test[64760d2bdea328cc]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:74
[INFO] [stdout]   25:     0x610ef45837fa - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   26:     0x610ef45837fa - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   27:     0x610ef45837fa - std[716c9a7a72e5c14e]::panicking::catch_unwind::<core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>, core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   28:     0x610ef45837fa - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<test[64760d2bdea328cc]::run_test_in_process::{closure#0}>, core[c5ed12ab89cc536a]::result::Result<(), alloc[9c68fdf4f4f29218]::string::String>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x610ef45837fa - test[64760d2bdea328cc]::run_test_in_process
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:686:27
[INFO] [stdout]   30:     0x610ef45837fa - test[64760d2bdea328cc]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:607:43
[INFO] [stdout]   31:     0x610ef457dcc4 - test[64760d2bdea328cc]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/test/src/lib.rs:637:41
[INFO] [stdout]   32:     0x610ef457dcc4 - std[716c9a7a72e5c14e]::sys::backtrace::__rust_begin_short_backtrace::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   33:     0x610ef45862f2 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:91:13
[INFO] [stdout]   34:     0x610ef45862f2 - <core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   35:     0x610ef45862f2 - std[716c9a7a72e5c14e]::panicking::catch_unwind::do_call::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:581:40
[INFO] [stdout]   36:     0x610ef45862f2 - std[716c9a7a72e5c14e]::panicking::catch_unwind::<(), core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panicking.rs:544:19
[INFO] [stdout]   37:     0x610ef45862f2 - std[716c9a7a72e5c14e]::panic::catch_unwind::<core[c5ed12ab89cc536a]::panic::unwind_safe::AssertUnwindSafe<std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x610ef45862f2 - std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked::<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/thread/lifecycle.rs:89:26
[INFO] [stdout]   39:     0x610ef45862f2 - <std[716c9a7a72e5c14e]::thread::lifecycle::spawn_unchecked<test[64760d2bdea328cc]::run_test::{closure#1}, ()>::{closure#1} as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x610ef4601ddf - <alloc[9c68fdf4f4f29218]::boxed::Box<dyn core[c5ed12ab89cc536a]::ops::function::FnOnce<(), Output = ()> + core[c5ed12ab89cc536a]::marker::Send> as core[c5ed12ab89cc536a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/alloc/src/boxed.rs:2206:9
[INFO] [stdout]   41:     0x610ef4601ddf - <std[716c9a7a72e5c14e]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/2fd6efc32704647e64d3d646d21c4c68eae100e4/library/std/src/sys/thread/unix.rs:119:17
[INFO] [stdout]   42:     0x78e655eb4aa4 - <unknown>
[INFO] [stdout]   43:     0x78e655f41a64 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     atomics_and_memory_ordering::atomics::tests::mutex_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 28 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.18s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--bin crust-of-rust`
[INFO] running `Command { std: "docker" "inspect" "8d610f37aef1dd39605d50d7848de6804d154523950faca29a9717f17b1037cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d610f37aef1dd39605d50d7848de6804d154523950faca29a9717f17b1037cf", kill_on_drop: false }`
[INFO] [stdout] 8d610f37aef1dd39605d50d7848de6804d154523950faca29a9717f17b1037cf
