[INFO] fetching crate io-context 0.2.0...
[INFO] checking io-context-0.2.0 against master#836c31742687ba4e2f857b5b698e1e9e6b67619c for pr-81789
[INFO] extracting crate io-context 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate io-context 0.2.0 on toolchain 836c31742687ba4e2f857b5b698e1e9e6b67619c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate io-context 0.2.0
[INFO] finished tweaking crates.io crate io-context 0.2.0
[INFO] tweaked toml for crates.io crate io-context 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9a8c308810f161042507591ccb092aa65596ed6b2e1b07b2b79ce18ba2ed0836
[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" "9a8c308810f161042507591ccb092aa65596ed6b2e1b07b2b79ce18ba2ed0836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9a8c308810f161042507591ccb092aa65596ed6b2e1b07b2b79ce18ba2ed0836", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9a8c308810f161042507591ccb092aa65596ed6b2e1b07b2b79ce18ba2ed0836", kill_on_drop: false }`
[INFO] [stdout] 9a8c308810f161042507591ccb092aa65596ed6b2e1b07b2b79ce18ba2ed0836
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+836c31742687ba4e2f857b5b698e1e9e6b67619c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4712937e2d25320fa1210ea79b19f0e2466cd4323988f34679a7334684d5b0e2
[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" "4712937e2d25320fa1210ea79b19f0e2466cd4323988f34679a7334684d5b0e2", kill_on_drop: false }`
[INFO] [stderr]     Checking io-context v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:324:46
[INFO] [stdout]     |
[INFO] [stdout] 324 |     values: Option<HashMap<&'static str, Box<Any + Send + Sync>>>,
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + 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/lib.rs:324:46
[INFO] [stdout]     |
[INFO] [stdout] 324 |     values: Option<HashMap<&'static str, Box<Any + Send + Sync>>>,
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + 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/lib.rs:554:29
[INFO] [stdout]     |
[INFO] [stdout] 554 |                 let value: &Any = &**value;
[INFO] [stdout]     |                             ^^^ help: use `dyn`: `dyn Any`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:554:29
[INFO] [stdout]     |
[INFO] [stdout] 554 |                 let value: &Any = &**value;
[INFO] [stdout]     |                             ^^^ help: use `dyn`: `dyn Any`
[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]    --> src/lib.rs:667:20
[INFO] [stdout]     |
[INFO] [stdout] 667 |         f.pad(self.description())
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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]    --> src/lib.rs:678:37
[INFO] [stdout]     |
[INFO] [stdout] 678 |         io::Error::new(kind, reason.description())
[INFO] [stdout]     |                                     ^^^^^^^^^^^
[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]    --> src/lib.rs:667:20
[INFO] [stdout]     |
[INFO] [stdout] 667 |         f.pad(self.description())
[INFO] [stdout]     |                    ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[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]    --> src/lib.rs:678:37
[INFO] [stdout]     |
[INFO] [stdout] 678 |         io::Error::new(kind, reason.description())
[INFO] [stdout]     |                                     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/test.rs:217:38
[INFO] [stdout]     |
[INFO] [stdout] 217 |     struct RequestId { uuid: String };
[INFO] [stdout]     |                                      ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> tests/test.rs:222:30
[INFO] [stdout]     |
[INFO] [stdout] 222 |     struct UserId { id: u64 };
[INFO] [stdout]     |                              ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `Command { std: "docker" "inspect" "4712937e2d25320fa1210ea79b19f0e2466cd4323988f34679a7334684d5b0e2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4712937e2d25320fa1210ea79b19f0e2466cd4323988f34679a7334684d5b0e2", kill_on_drop: false }`
[INFO] [stdout] 4712937e2d25320fa1210ea79b19f0e2466cd4323988f34679a7334684d5b0e2