[INFO] fetching crate mockers 0.22.0...
[INFO] checking mockers-0.22.0 against master#158f00a1c5175648af6f6099b075f78d1d014a28 for pr-121251
[INFO] extracting crate mockers 0.22.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate mockers 0.22.0 on toolchain 158f00a1c5175648af6f6099b075f78d1d014a28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mockers 0.22.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate mockers 0.22.0
[INFO] tweaked toml for crates.io crate mockers 0.22.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+158f00a1c5175648af6f6099b075f78d1d014a28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-quote v0.2.2
[INFO] [stderr]   Downloaded mockers_derive v0.22.0
[INFO] [stderr]   Downloaded proc-quote-impl v0.2.2
[INFO] [stderr]   Downloaded itertools v0.4.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+158f00a1c5175648af6f6099b075f78d1d014a28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ec46f39715965ffd334ed1c7a95e5bb150b273c2d868e454b7294fa1cf70edc0
[INFO] running `Command { std: "docker" "start" "-a" "ec46f39715965ffd334ed1c7a95e5bb150b273c2d868e454b7294fa1cf70edc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ec46f39715965ffd334ed1c7a95e5bb150b273c2d868e454b7294fa1cf70edc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec46f39715965ffd334ed1c7a95e5bb150b273c2d868e454b7294fa1cf70edc0", kill_on_drop: false }`
[INFO] [stdout] ec46f39715965ffd334ed1c7a95e5bb150b273c2d868e454b7294fa1cf70edc0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "+158f00a1c5175648af6f6099b075f78d1d014a28" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1b0efe5fff31bbd11e1ea09e208c3edc3e20dbc275caa92f63a55ac334fd1f26
[INFO] running `Command { std: "docker" "start" "-a" "1b0efe5fff31bbd11e1ea09e208c3edc3e20dbc275caa92f63a55ac334fd1f26", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling unindent v0.1.11
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]    Compiling itertools v0.4.19
[INFO] [stderr]     Checking mockers v0.22.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stdout] warning: trait `MaybeDebug` is never used
[INFO] [stdout]  --> src/dbg.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait MaybeDebug {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 758 |     define_verify!(verify0 { });
[INFO] [stdout]     |     --------------------------- in this macro invocation
[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]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 759 |     define_verify!(verify1 { (0, arg0, Arg0) });
[INFO] [stdout]     |     ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 760 |     define_verify!(verify2 { (0, arg0, Arg0), (1, arg1, Arg1) });
[INFO] [stdout]     |     ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 761 |     define_verify!(verify3 { (0, arg0, Arg0), (1, arg1, Arg1), (2, arg2, Arg2) });
[INFO] [stdout]     |     ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 762 |     define_verify!(verify4 { (0, arg0, Arg0), (1, arg1, Arg1), (2, arg2, Arg2), (3, arg3, Arg3) });
[INFO] [stdout]     |     ---------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling proc-quote-impl v0.2.2
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling indoc-impl v0.3.6
[INFO] [stderr]    Compiling indoc v0.3.6
[INFO] [stderr]    Compiling proc-quote v0.2.2
[INFO] [stderr]    Compiling mockers_derive v0.22.0
[INFO] [stdout] warning: method `foo` is never used
[INFO] [stdout]  --> tests/nested.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub trait A {
[INFO] [stdout]   |               - method in this trait
[INFO] [stdout] 7 |         fn foo(&self);
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `foo` is never used
[INFO] [stdout]    --> tests/multi_trait.rs:164:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub trait A {
[INFO] [stdout]     |               - method in this trait
[INFO] [stdout] 164 |         fn foo(&self, a: u32);
[INFO] [stdout]     |            ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `bar` is never used
[INFO] [stdout]    --> tests/multi_trait.rs:168:12
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub trait B: A {
[INFO] [stdout]     |               - method in this trait
[INFO] [stdout] 168 |         fn bar(&self, b: u32);
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MaybeDebug` is never used
[INFO] [stdout]  --> src/dbg.rs:5:7
[INFO] [stdout]   |
[INFO] [stdout] 5 | trait MaybeDebug {
[INFO] [stdout]   |       ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` 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/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 758 |     define_verify!(verify0 { });
[INFO] [stdout]     |     --------------------------- in this macro invocation
[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]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 759 |     define_verify!(verify1 { (0, arg0, Arg0) });
[INFO] [stdout]     |     ------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 760 |     define_verify!(verify2 { (0, arg0, Arg0), (1, arg1, Arg1) });
[INFO] [stdout]     |     ------------------------------------------------------------ in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 761 |     define_verify!(verify3 { (0, arg0, Arg0), (1, arg1, Arg1), (2, arg2, Arg2) });
[INFO] [stdout]     |     ----------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Box::<T>::from_raw` that must be used
[INFO] [stdout]    --> src/lib.rs:734:26
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { Box::from_raw(args_to_destroy as *mut ($($Arg,)*)) };
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 762 |     define_verify!(verify4 { (0, arg0, Arg0), (1, arg1, Arg1), (2, arg2, Arg2), (3, arg3, Arg3) });
[INFO] [stdout]     |     ---------------------------------------------------------------------------------------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: call `drop(Box::from_raw(ptr))` if you intend to drop the `Box`
[INFO] [stdout]     = note: this warning originates in the macro `define_verify` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 734 |                 unsafe { let _ = Box::from_raw(args_to_destroy as *mut ($($Arg,)*)); };
[INFO] [stdout]     |                          +++++++                                                   +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.11s
[INFO] running `Command { std: "docker" "inspect" "1b0efe5fff31bbd11e1ea09e208c3edc3e20dbc275caa92f63a55ac334fd1f26", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1b0efe5fff31bbd11e1ea09e208c3edc3e20dbc275caa92f63a55ac334fd1f26", kill_on_drop: false }`
[INFO] [stdout] 1b0efe5fff31bbd11e1ea09e208c3edc3e20dbc275caa92f63a55ac334fd1f26
