[INFO] fetching crate rspec 1.0.0-beta.4...
[INFO] checking rspec-1.0.0-beta.4 against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] extracting crate rspec 1.0.0-beta.4 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rspec 1.0.0-beta.4 on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rspec 1.0.0-beta.4
[INFO] finished tweaking crates.io crate rspec 1.0.0-beta.4
[INFO] tweaked toml for crates.io crate rspec 1.0.0-beta.4 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cargo_metadata v0.2.3
[INFO] [stderr]   Downloaded quine-mc_cluskey v0.2.4
[INFO] [stderr]   Downloaded itertools v0.6.5
[INFO] [stderr]   Downloaded rayon v0.8.2
[INFO] [stderr]   Downloaded semver v0.6.0
[INFO] [stderr]   Downloaded regex-syntax v0.4.2
[INFO] [stderr]   Downloaded expectest v0.9.2
[INFO] [stderr]   Downloaded clippy_lints v0.0.153
[INFO] [stderr]   Downloaded pulldown-cmark v0.0.15
[INFO] [stderr]   Downloaded clippy v0.0.153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0c01b3252860bbbbafcfb191d0962259839080de722368246fca521e0ba5fc77
[INFO] running `Command { std: "docker" "start" "-a" "0c01b3252860bbbbafcfb191d0962259839080de722368246fca521e0ba5fc77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0c01b3252860bbbbafcfb191d0962259839080de722368246fca521e0ba5fc77", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0c01b3252860bbbbafcfb191d0962259839080de722368246fca521e0ba5fc77", kill_on_drop: false }`
[INFO] [stdout] 0c01b3252860bbbbafcfb191d0962259839080de722368246fca521e0ba5fc77
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f0e00544966b640f16876673c7ef667aa018509c1fdad069faaf48e764044df4
[INFO] running `Command { std: "docker" "start" "-a" "f0e00544966b640f16876673c7ef667aa018509c1fdad069faaf48e764044df4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.42
[INFO] [stderr]    Compiling derive_builder v0.5.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling derive_builder_core v0.2.0
[INFO] [stderr]     Checking colored v1.9.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking rayon-core v1.8.1
[INFO] [stderr]     Checking rayon v0.8.2
[INFO] [stderr]    Compiling derive-new v0.5.8
[INFO] [stderr]     Checking rspec v1.0.0-beta.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub(crate) before_all: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) before_each: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) after_all: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                   ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub(crate) after_each: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/block/example.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub(crate) function: Box<Fn(&T) -> ExampleReport>,
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T) -> ExampleReport`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |     observers: Vec<Arc<RunnerObserver>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:37:65
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(configuration: Configuration, observers: Vec<Arc<RunnerObserver>>) -> Runner {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |         F: FnMut(&RunnerObserver),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Logger` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub use logger::Logger;
[INFO] [stdout]    |         -------------- the item `Logger` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 59 |     use logger::Logger;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ConfigurationBuilder` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub use runner::{Configuration, ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                 -------------------- the item `ConfigurationBuilder` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 60 |     use runner::{ConfigurationBuilder, Runner};
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Runner` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:60:40
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub use runner::{Configuration, ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                                       ------ the item `Runner` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 60 |     use runner::{ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:20:36
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub(crate) before_all: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:21:37
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub(crate) before_each: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub(crate) after_all: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                   ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/block/context.rs:23:36
[INFO] [stdout]    |
[INFO] [stdout] 23 |     pub(crate) after_each: Vec<Box<Fn(&mut T)>>,
[INFO] [stdout]    |                                    ^^^^^^^^^^ help: use `dyn`: `dyn Fn(&mut T)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/block/example.rs:7:30
[INFO] [stdout]   |
[INFO] [stdout] 7 |     pub(crate) function: Box<Fn(&T) -> ExampleReport>,
[INFO] [stdout]   |                              ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T) -> ExampleReport`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:32:24
[INFO] [stdout]    |
[INFO] [stdout] 32 |     observers: Vec<Arc<RunnerObserver>>,
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:37:65
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn new(configuration: Configuration, observers: Vec<Arc<RunnerObserver>>) -> Runner {
[INFO] [stdout]    |                                                                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/runner/mod.rs:63:19
[INFO] [stdout]    |
[INFO] [stdout] 63 |         F: FnMut(&RunnerObserver),
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^ help: use `dyn`: `dyn RunnerObserver`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Logger` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:59:9
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub use logger::Logger;
[INFO] [stdout]    |         -------------- the item `Logger` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 59 |     use logger::Logger;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `ConfigurationBuilder` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:60:18
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub use runner::{Configuration, ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                 -------------------- the item `ConfigurationBuilder` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 60 |     use runner::{ConfigurationBuilder, Runner};
[INFO] [stdout]    |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `Runner` is imported redundantly
[INFO] [stdout]   --> src/lib.rs:60:40
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub use runner::{Configuration, ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                                       ------ the item `Runner` is already imported here
[INFO] [stdout] ...
[INFO] [stdout] 60 |     use runner::{ConfigurationBuilder, Runner};
[INFO] [stdout]    |                                        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.60s
[INFO] running `Command { std: "docker" "inspect" "f0e00544966b640f16876673c7ef667aa018509c1fdad069faaf48e764044df4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f0e00544966b640f16876673c7ef667aa018509c1fdad069faaf48e764044df4", kill_on_drop: false }`
[INFO] [stdout] f0e00544966b640f16876673c7ef667aa018509c1fdad069faaf48e764044df4