[INFO] cloning repository https://github.com/startdusk/crust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/startdusk/crust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstartdusk%2Fcrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstartdusk%2Fcrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4b6fbd77399f1cdf18fb0369fb72ada36af3bbde
[INFO] checking startdusk/crust against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstartdusk%2Fcrust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/startdusk/crust on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/startdusk/crust
[INFO] finished tweaking git repo https://github.com/startdusk/crust
[INFO] tweaked toml for git repo https://github.com/startdusk/crust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/startdusk/crust 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ff8e78b7ab10c366d7197c7c649011d890c8b85b94d3c1970f8bb1b01f4cb596
[INFO] running `Command { std: "docker" "start" "-a" "ff8e78b7ab10c366d7197c7c649011d890c8b85b94d3c1970f8bb1b01f4cb596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ff8e78b7ab10c366d7197c7c649011d890c8b85b94d3c1970f8bb1b01f4cb596", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff8e78b7ab10c366d7197c7c649011d890c8b85b94d3c1970f8bb1b01f4cb596", kill_on_drop: false }`
[INFO] [stdout] ff8e78b7ab10c366d7197c7c649011d890c8b85b94d3c1970f8bb1b01f4cb596
[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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4f6a140ef34add1eda27b5db55dd2cfa1d7d772e521dc3e1edfa64e020c7061
[INFO] running `Command { std: "docker" "start" "-a" "c4f6a140ef34add1eda27b5db55dd2cfa1d7d772e521dc3e1edfa64e020c7061", kill_on_drop: false }`
[INFO] [stderr] warning: virtual workspace defaulting to `resolver = "1"` despite one or more workspace members being on edition 2021 which implies `resolver = "2"`
[INFO] [stderr] note: to keep the current resolver, specify `workspace.resolver = "1"` in the workspace root's manifest
[INFO] [stderr] note: to use the edition 2021 resolver, specify `workspace.resolver = "2"` in the workspace root's manifest
[INFO] [stderr] note: for more details see https://doc.rust-lang.org/cargo/reference/resolver.html#resolver-versions
[INFO] [stderr]    Compiling libc v0.2.138
[INFO] [stderr]     Checking boks v0.1.0 (/opt/rustwide/workdir/boks)
[INFO] [stderr]     Checking patience v0.1.0 (/opt/rustwide/workdir/patience)
[INFO] [stderr]     Checking call-me v0.1.0 (/opt/rustwide/workdir/call-me)
[INFO] [stderr]     Checking build-and-ffi v0.1.0 (/opt/rustwide/workdir/build-and-ffi)
[INFO] [stderr]     Checking lifetime_annotations v0.1.0 (/opt/rustwide/workdir/lifetime_annotations)
[INFO] [stderr]     Checking eksempel v0.1.0 (/opt/rustwide/workdir/eksempel)
[INFO] [stderr]     Checking smart_pointers_and_interior_mutability v0.1.0 (/opt/rustwide/workdir/smart_pointers_and_interior_mutability)
[INFO] [stderr]     Checking iterators v0.1.0 (/opt/rustwide/workdir/iterators)
[INFO] [stdout] warning: unused import: `super::Cell`
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/cell.rs:38:9
[INFO] [stdout]    |
[INFO] [stdout] 38 |     use super::Cell;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/cell.rs:39:9
[INFO] [stdout]    |
[INFO] [stdout] 39 |     use std::sync::Arc;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::thread`
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/cell.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     use std::thread;
[INFO] [stdout]    |         ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/cell.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> Cell<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(value: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/rc.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Rc<T> {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     pub fn new(v: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Shared` and `Exclusive` are never constructed
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/refcell.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum RefState {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 9  |     Unshared,
[INFO] [stdout] 10 |     Shared(usize),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Exclusive,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `borrow`, and `borrow_mut` are never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/refcell.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<T> RefCell<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(value: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn borrow(&mut self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn borrow_mut(&mut self) -> Option<RefMut<'_, T>> {
[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]   --> smart_pointers_and_interior_mutability/src/rc.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> boks/src/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let b = Boks::ny(Oisann(&mut z));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/cell.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | impl<T> Cell<T> {
[INFO] [stdout]    | --------------- associated function in this implementation
[INFO] [stdout] 14 |     pub fn new(value: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/rc.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<T> Rc<T> {
[INFO] [stdout]    | ------------- associated function in this implementation
[INFO] [stdout] 20 |     pub fn new(v: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Shared` and `Exclusive` are never constructed
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/refcell.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 8  | enum RefState {
[INFO] [stdout]    |      -------- variants in this enum
[INFO] [stdout] 9  |     Unshared,
[INFO] [stdout] 10 |     Shared(usize),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 11 |     Exclusive,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `RefState` has a derived impl for the trait `Clone`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `borrow`, and `borrow_mut` are never used
[INFO] [stdout]   --> smart_pointers_and_interior_mutability/src/refcell.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl<T> RefCell<T> {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 23 |     pub fn new(value: T) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn borrow(&mut self) -> Option<Ref<'_, T>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 46 |     pub fn borrow_mut(&mut self) -> Option<RefMut<'_, T>> {
[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]   --> smart_pointers_and_interior_mutability/src/rc.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |             drop(inner);
[INFO] [stdout]    |             ^^^^^-----^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  argument has type `&RcInner<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: use `let _ = ...` to ignore the expression or result
[INFO] [stdout]    = note: `#[warn(dropping_references)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `b`
[INFO] [stdout]   --> boks/src/main.rs:60:9
[INFO] [stdout]    |
[INFO] [stdout] 60 |     let b = Boks::ny(Oisann(&mut z));
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking channels v0.1.0 (/opt/rustwide/workdir/channels)
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> boks/src/main.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 |         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]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |         unsafe { let _ = Box::from_raw(self.p); };
[INFO] [stdout]    |                  +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 8 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]   --> boks/src/main.rs:17:18
[INFO] [stdout]    |
[INFO] [stdout] 17 |         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]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 17 |         unsafe { let _ = Box::from_raw(self.p); };
[INFO] [stdout]    |                  +++++++                      +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking strtok v0.1.0 (/opt/rustwide/workdir/strtok)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking declarative_macros v0.1.0 (/opt/rustwide/workdir/declarative_macros)
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking atomics v0.1.0 (/opt/rustwide/workdir/atomics)
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> atomics/src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let z = z.load(Ordering::SeqCst);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking sharing-is-caring v0.1.0 (/opt/rustwide/workdir/sharing-is-caring)
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> sharing-is-caring/src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let y = x.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r1`
[INFO] [stdout]   --> atomics/src/main.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |     let r1 = t1.join().unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r1`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `r2`
[INFO] [stdout]   --> atomics/src/main.rs:88:9
[INFO] [stdout]    |
[INFO] [stdout] 88 |     let r2 = t2.join().unwrap();
[INFO] [stdout]    |         ^^ help: if this is intentional, prefix it with an underscore: `_r2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `z`
[INFO] [stdout]    --> atomics/src/main.rs:118:9
[INFO] [stdout]     |
[INFO] [stdout] 118 |     let z = z.load(Ordering::SeqCst);
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_z`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> sharing-is-caring/src/main.rs:48:9
[INFO] [stdout]    |
[INFO] [stdout] 48 |     let y = x.clone();
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_y`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking getrandom v0.2.8
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking sorting_algorithms v0.1.0 (/opt/rustwide/workdir/sorting_algorithms)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.25s
[INFO] running `Command { std: "docker" "inspect" "c4f6a140ef34add1eda27b5db55dd2cfa1d7d772e521dc3e1edfa64e020c7061", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4f6a140ef34add1eda27b5db55dd2cfa1d7d772e521dc3e1edfa64e020c7061", kill_on_drop: false }`
[INFO] [stdout] c4f6a140ef34add1eda27b5db55dd2cfa1d7d772e521dc3e1edfa64e020c7061
