[INFO] fetching crate cognitive-exhibitor 0.1.0...
[INFO] checking cognitive-exhibitor-0.1.0 against try#ffa4a0215752773248fb0f0a8092f1c3e7907e9e for pr-75585
[INFO] extracting crate cognitive-exhibitor 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate cognitive-exhibitor 0.1.0 on toolchain ffa4a0215752773248fb0f0a8092f1c3e7907e9e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cognitive-exhibitor 0.1.0
[INFO] finished tweaking crates.io crate cognitive-exhibitor 0.1.0
[INFO] tweaked toml for crates.io crate cognitive-exhibitor 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cognitive-outputs v0.1.0
[INFO] [stderr]   Downloaded cognitive-frames v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 174b60ceac81b6d1bdb02ea0033ec860db02aefe52ab4bf7ccb7aa8a92104005
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "174b60ceac81b6d1bdb02ea0033ec860db02aefe52ab4bf7ccb7aa8a92104005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "174b60ceac81b6d1bdb02ea0033ec860db02aefe52ab4bf7ccb7aa8a92104005", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "174b60ceac81b6d1bdb02ea0033ec860db02aefe52ab4bf7ccb7aa8a92104005", kill_on_drop: false }`
[INFO] [stdout] 174b60ceac81b6d1bdb02ea0033ec860db02aefe52ab4bf7ccb7aa8a92104005
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+ffa4a0215752773248fb0f0a8092f1c3e7907e9e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2e7814724c514a7d321d972c03dcc02ae5a42dfa8328510d28aff5f5bcfb9a85
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2e7814724c514a7d321d972c03dcc02ae5a42dfa8328510d28aff5f5bcfb9a85", kill_on_drop: false }`
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking cognitive-qualia v0.1.0
[INFO] [stderr]     Checking cognitive-renderer-gl v0.1.0
[INFO] [stderr]     Checking cognitive-frames v0.1.0
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking cognitive-outputs v0.1.0
[INFO] [stderr]     Checking cognitive-exhibitor v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/display.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |     output: Box<Output>,
[INFO] [stdout]    |                 ^^^^^^ help: use `dyn`: `dyn Output`
[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/display.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |                output: Box<Output>,
[INFO] [stdout]    |                            ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/exhibitor.rs:93:55
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn on_output_found(&mut self, mut output: Box<Output>) {
[INFO] [stdout]    |                                                       ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/display.rs:27:17
[INFO] [stdout]    |
[INFO] [stdout] 27 |     output: Box<Output>,
[INFO] [stdout]    |                 ^^^^^^ help: use `dyn`: `dyn Output`
[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/display.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |                output: Box<Output>,
[INFO] [stdout]    |                            ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/exhibitor.rs:93:55
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub fn on_output_found(&mut self, mut output: Box<Output>) {
[INFO] [stdout]    |                                                       ^^^^^^ help: use `dyn`: `dyn Output`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.56s
[INFO] running `Command { std: "docker" "inspect" "2e7814724c514a7d321d972c03dcc02ae5a42dfa8328510d28aff5f5bcfb9a85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e7814724c514a7d321d972c03dcc02ae5a42dfa8328510d28aff5f5bcfb9a85", kill_on_drop: false }`
[INFO] [stdout] 2e7814724c514a7d321d972c03dcc02ae5a42dfa8328510d28aff5f5bcfb9a85