[INFO] updating cached repository LouisBrunner/rusty-ports
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/LouisBrunner/rusty-ports
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/LouisBrunner/rusty-ports" "work/ex/beta-1.38-1/sources/1.37.0/gh/LouisBrunner/rusty-ports"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/LouisBrunner/rusty-ports'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/LouisBrunner/rusty-ports" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LouisBrunner/rusty-ports"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LouisBrunner/rusty-ports'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6cc9820b95022397eb4f1501e7b0c4648f174e1f
[INFO] sha for GitHub repo LouisBrunner/rusty-ports: 6cc9820b95022397eb4f1501e7b0c4648f174e1f
[INFO] validating manifest of LouisBrunner/rusty-ports on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of LouisBrunner/rusty-ports on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing LouisBrunner/rusty-ports
[INFO] finished frobbing LouisBrunner/rusty-ports
[INFO] frobbed toml for LouisBrunner/rusty-ports written to work/ex/beta-1.38-1/sources/1.37.0/gh/LouisBrunner/rusty-ports/Cargo.toml
[INFO] started frobbing LouisBrunner/rusty-ports
[INFO] finished frobbing LouisBrunner/rusty-ports
[INFO] frobbed toml for LouisBrunner/rusty-ports written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LouisBrunner/rusty-ports/Cargo.toml
[INFO] crate LouisBrunner/rusty-ports already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing LouisBrunner/rusty-ports against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LouisBrunner/rusty-ports:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 5318236e9655f0e8a7c2ca0cdd3968714f5c33495b17a653c3af1df834db11f1
[INFO] running `"docker" "start" "-a" "5318236e9655f0e8a7c2ca0cdd3968714f5c33495b17a653c3af1df834db11f1"`
[INFO] [stderr]    Compiling users v0.7.0
[INFO] [stderr]    Compiling mockers_derive v0.12.2
[INFO] [stderr]    Compiling ctrlc v3.1.1
[INFO] [stderr]    Compiling rusty-ports v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/reporters/console.rs:7:20
[INFO] [stderr]   |
[INFO] [stderr] 7 |     out: Arc<Mutex<io::Write + Send + Sync>>,
[INFO] [stderr]   |                    ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:10:27
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn new(out: Arc<Mutex<io::Write + Send + Sync>>) -> ConsoleReporter {
[INFO] [stderr]    |                           ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |             io::Write + Send + Sync + 'static,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:31:13
[INFO] [stderr]    |
[INFO] [stderr] 31 |             io::Write + Send + Sync + 'static,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:37:42
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn report_fn(&self, tag: &Tag, gen: &Fn(&mut MutexGuard<io::Write + Send + Sync + 'static>)) {
[INFO] [stderr]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut MutexGuard<io::Write + Send + Sync + 'static>)`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:37:61
[INFO] [stderr]    |
[INFO] [stderr] 37 |     fn report_fn(&self, tag: &Tag, gen: &Fn(&mut MutexGuard<io::Write + Send + Sync + 'static>)) {
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reporters/console.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |             io::Write + Send + Sync + 'static,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn io::Write + Send + Sync + 'static`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]  --> src/monitor/server/client.rs:2:60
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::atomic::{AtomicBool, AtomicUsize, Ordering, ATOMIC_USIZE_INIT};
[INFO] [stderr]   |                                                            ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::sync::atomic::ATOMIC_USIZE_INIT': the `new` function is now preferred
[INFO] [stderr]   --> src/monitor/server/client.rs:10:43
[INFO] [stderr]    |
[INFO] [stderr] 10 | static GLOBAL_CLIENT_COUNT: AtomicUsize = ATOMIC_USIZE_INIT;
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated item: `AtomicUsize::new(0)`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:25:13
[INFO] [stderr]    |
[INFO] [stderr] 25 |             writeln!(writer, "{}", msg);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:33:13
[INFO] [stderr]    |
[INFO] [stderr] 33 |             writeln!(writer, "{}", msg);
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         write!(out, "{} ", header);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:67:13
[INFO] [stderr]    |
[INFO] [stderr] 67 |             writeln!(writer, "Received message:");
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:73:17
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 write!(writer, "\t");
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:78:25
[INFO] [stderr]    |
[INFO] [stderr] 78 |                         write!(writer, " ");
[INFO] [stderr]    |                         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:80:21
[INFO] [stderr]    |
[INFO] [stderr] 80 |                     write!(writer, "{:02x}", c);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:86:17
[INFO] [stderr]    |
[INFO] [stderr] 86 |                 write!(writer, "{} |", padding);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:90:21
[INFO] [stderr]    |
[INFO] [stderr] 90 |                     write!(writer, "{}", if char::is_control(cc) { '.' } else { cc });
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/reporters/console.rs:94:17
[INFO] [stderr]    |
[INFO] [stderr] 94 |                 writeln!(writer, "{}|", padding);
[INFO] [stderr]    |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.47s
[INFO] running `"docker" "inspect" "5318236e9655f0e8a7c2ca0cdd3968714f5c33495b17a653c3af1df834db11f1"`
[INFO] running `"docker" "rm" "-f" "5318236e9655f0e8a7c2ca0cdd3968714f5c33495b17a653c3af1df834db11f1"`
[INFO] [stdout] 5318236e9655f0e8a7c2ca0cdd3968714f5c33495b17a653c3af1df834db11f1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/LouisBrunner/rusty-ports:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 902e22f3a31af316e48734700f6b967d7cd1c484cc808d9ff82a78f597ab38a2
[INFO] running `"docker" "start" "-a" "902e22f3a31af316e48734700f6b967d7cd1c484cc808d9ff82a78f597ab38a2"`
[INFO] [stderr]    Compiling mockers v0.12.2
[INFO] [stderr]    Compiling mockstream v0.0.3
[INFO] [stderr] error[E0432]: unresolved import `std::boxed::FnBox`
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::boxed::FnBox;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^ no `FnBox` in `boxed`
[INFO] [stderr] 
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/lib.rs:1:1
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![feature(fnbox, alloc, specialization)]
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `T` is never used
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:3:19
[INFO] [stderr]   |
[INFO] [stderr] 3 | pub struct BoxFn0<T>(Box<FnBox() -> T>);
[INFO] [stderr]   |                   ^ unused parameter
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing `T` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A0` is never used
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:9:19
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct BoxFn1<A0, T>(Box<FnBox(A0) -> T>);
[INFO] [stderr]   |                   ^^ unused parameter
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing `A0` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `T` is never used
[INFO] [stderr]  --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:9:23
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub struct BoxFn1<A0, T>(Box<FnBox(A0) -> T>);
[INFO] [stderr]   |                       ^ unused parameter
[INFO] [stderr]   |
[INFO] [stderr]   = help: consider removing `T` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A0` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:15:19
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct BoxFn2<A0, A1, T>(Box<FnBox(A0, A1) -> T>);
[INFO] [stderr]    |                   ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A0` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A1` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:15:23
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct BoxFn2<A0, A1, T>(Box<FnBox(A0, A1) -> T>);
[INFO] [stderr]    |                       ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A1` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `T` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:15:27
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct BoxFn2<A0, A1, T>(Box<FnBox(A0, A1) -> T>);
[INFO] [stderr]    |                           ^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `T` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A0` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:21:19
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct BoxFn3<A0, A1, A2, T>(Box<FnBox(A0, A1, A2) -> T>);
[INFO] [stderr]    |                   ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A0` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A1` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:21:23
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct BoxFn3<A0, A1, A2, T>(Box<FnBox(A0, A1, A2) -> T>);
[INFO] [stderr]    |                       ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A1` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A2` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:21:27
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct BoxFn3<A0, A1, A2, T>(Box<FnBox(A0, A1, A2) -> T>);
[INFO] [stderr]    |                           ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A2` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `T` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:21:31
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub struct BoxFn3<A0, A1, A2, T>(Box<FnBox(A0, A1, A2) -> T>);
[INFO] [stderr]    |                               ^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `T` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A0` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:27:19
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct BoxFn4<A0, A1, A2, A3, T>(Box<FnBox(A0, A1, A2, A3) -> T>);
[INFO] [stderr]    |                   ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A0` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A1` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:27:23
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct BoxFn4<A0, A1, A2, A3, T>(Box<FnBox(A0, A1, A2, A3) -> T>);
[INFO] [stderr]    |                       ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A1` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A2` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:27:27
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct BoxFn4<A0, A1, A2, A3, T>(Box<FnBox(A0, A1, A2, A3) -> T>);
[INFO] [stderr]    |                           ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A2` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `A3` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:27:31
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct BoxFn4<A0, A1, A2, A3, T>(Box<FnBox(A0, A1, A2, A3) -> T>);
[INFO] [stderr]    |                               ^^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `A3` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error[E0392]: parameter `T` is never used
[INFO] [stderr]   --> /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mockers-0.12.2/src/box_fn.rs:27:35
[INFO] [stderr]    |
[INFO] [stderr] 27 | pub struct BoxFn4<A0, A1, A2, A3, T>(Box<FnBox(A0, A1, A2, A3) -> T>);
[INFO] [stderr]    |                                   ^ unused parameter
[INFO] [stderr]    |
[INFO] [stderr]    = help: consider removing `T` or using a marker such as `std::marker::PhantomData`
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 17 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0392, E0432, E0554.
[INFO] [stderr] For more information about an error, try `rustc --explain E0392`.
[INFO] [stderr] error: Could not compile `mockers`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "902e22f3a31af316e48734700f6b967d7cd1c484cc808d9ff82a78f597ab38a2"`
[INFO] running `"docker" "rm" "-f" "902e22f3a31af316e48734700f6b967d7cd1c484cc808d9ff82a78f597ab38a2"`
[INFO] [stdout] 902e22f3a31af316e48734700f6b967d7cd1c484cc808d9ff82a78f597ab38a2