[INFO] fetching crate pseudo 0.2.0...
[INFO] checking pseudo-0.2.0 against master#d62d3f7fa9a91d933213cc10e20e740608983f64 for pr-77015
[INFO] extracting crate pseudo 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate pseudo 0.2.0 on toolchain d62d3f7fa9a91d933213cc10e20e740608983f64
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate pseudo 0.2.0
[INFO] finished tweaking crates.io crate pseudo 0.2.0
[INFO] tweaked toml for crates.io crate pseudo 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84867c89f4a2192276bab6052ea5f834f1b642cc146eecde705bbca7c1d14cd8
[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" "84867c89f4a2192276bab6052ea5f834f1b642cc146eecde705bbca7c1d14cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84867c89f4a2192276bab6052ea5f834f1b642cc146eecde705bbca7c1d14cd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84867c89f4a2192276bab6052ea5f834f1b642cc146eecde705bbca7c1d14cd8", kill_on_drop: false }`
[INFO] [stdout] 84867c89f4a2192276bab6052ea5f834f1b642cc146eecde705bbca7c1d14cd8
[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" "+d62d3f7fa9a91d933213cc10e20e740608983f64" "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] cad4b5dfbd3a0937e3ed3c3880a34e8289739f9b7ffd0bf6f754228764155eb3
[INFO] running `Command { std: "docker" "start" "-a" "cad4b5dfbd3a0937e3ed3c3880a34e8289739f9b7ffd0bf6f754228764155eb3", kill_on_drop: false }`
[INFO] [stderr]     Checking pseudo v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mock.rs:22:35
[INFO] [stdout]    |
[INFO] [stdout] 22 |     mock_closure: OptionalRef<Box<Fn(C) -> R + Send + Sync>>,
[INFO] [stdout]    |                                   ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> R + Send + Sync`
[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/mock.rs:176:44
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn use_closure(&self, mock_fn: Box<Fn(C) -> R + Send + Sync>) {
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(C) -> R + Send + Sync`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/send.rs:24:35
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let _ = Box::new(mock) as Box<A + Send>;
[INFO] [stdout]    |                                   ^^^^^^^^ help: use `dyn`: `dyn A + Send`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> examples/uncloneable.rs:58:30
[INFO] [stdout]    |
[INFO] [stdout] 58 |         write!(f, "{}", self.description())
[INFO] [stdout]    |                              ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "cad4b5dfbd3a0937e3ed3c3880a34e8289739f9b7ffd0bf6f754228764155eb3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cad4b5dfbd3a0937e3ed3c3880a34e8289739f9b7ffd0bf6f754228764155eb3", kill_on_drop: false }`
[INFO] [stdout] cad4b5dfbd3a0937e3ed3c3880a34e8289739f9b7ffd0bf6f754228764155eb3