[INFO] fetching crate actix-http 3.0.0-beta.6...
[INFO] checking actix-http-3.0.0-beta.6 against master#a5f164faad4a2fed606b8160fd7ecd2d5cbba381 for pr-84920
[INFO] extracting crate actix-http 3.0.0-beta.6 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate actix-http 3.0.0-beta.6 on toolchain a5f164faad4a2fed606b8160fd7ecd2d5cbba381
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate actix-http 3.0.0-beta.6
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate actix-http 3.0.0-beta.6
[INFO] tweaked toml for crates.io crate actix-http 3.0.0-beta.6 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate crates.io crate actix-http 3.0.0-beta.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d0e5409a97861d260af24a9db1964020cd54ad5303ee9734f4e692cfff4bd58b
[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" "d0e5409a97861d260af24a9db1964020cd54ad5303ee9734f4e692cfff4bd58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0e5409a97861d260af24a9db1964020cd54ad5303ee9734f4e692cfff4bd58b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e5409a97861d260af24a9db1964020cd54ad5303ee9734f4e692cfff4bd58b", kill_on_drop: false }`
[INFO] [stdout] d0e5409a97861d260af24a9db1964020cd54ad5303ee9734f4e692cfff4bd58b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+a5f164faad4a2fed606b8160fd7ecd2d5cbba381" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3dc9c71e583ebf4859dc43ad97b24435ea79d25a181855726ec7a41b549cffba
[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" "3dc9c71e583ebf4859dc43ad97b24435ea79d25a181855726ec7a41b549cffba", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking local-waker v0.1.1
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]    Compiling paste v1.0.5
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling httparse v1.4.0
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking actix-utils v3.0.0
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking actix-service v2.0.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking signal-hook-registry v1.3.0
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tokio v1.5.0
[INFO] [stderr]     Checking local-channel v0.1.2
[INFO] [stderr]     Checking tokio-util v0.6.6
[INFO] [stderr]     Checking actix-codec v0.4.0-beta.1
[INFO] [stderr]     Checking h2 v0.3.2
[INFO] [stderr]    Compiling actix-macros v0.2.0
[INFO] [stderr]    Compiling time-macros-impl v0.1.1
[INFO] [stderr]    Compiling pin-project-internal v1.0.7
[INFO] [stderr]    Compiling derive_more v0.99.13
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking time v0.2.26
[INFO] [stderr]     Checking actix-rt v2.2.0
[INFO] [stderr]     Checking pin-project v1.0.7
[INFO] [stderr]     Checking actix-tls v3.0.0-beta.5
[INFO] [stderr]     Checking actix-http v3.0.0-beta.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `serde_json`
[INFO] [stdout]    --> src/body/mod.rs:227:13
[INFO] [stdout]     |
[INFO] [stdout] 227 |         use serde_json::{json, Value};
[INFO] [stdout]     |             ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `json`
[INFO] [stdout]    --> src/body/mod.rs:234:44
[INFO] [stdout]     |
[INFO] [stdout] 234 |             Body::from(serde_json::to_vec(&json!({"test-key":"test-value"})).unwrap())
[INFO] [stdout]     |                                            ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
[INFO] [stdout]    --> src/body/mod.rs:229:24
[INFO] [stdout]     |
[INFO] [stdout] 229 |             Body::from(serde_json::to_vec(&Value::String("test".to_owned())).unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared crate or module `serde_json`
[INFO] [stdout]    --> src/body/mod.rs:234:24
[INFO] [stdout]     |
[INFO] [stdout] 234 |             Body::from(serde_json::to_vec(&json!({"test-key":"test-value"})).unwrap())
[INFO] [stdout]     |                        ^^^^^^^^^^ use of undeclared crate or module `serde_json`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `actix-http`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3dc9c71e583ebf4859dc43ad97b24435ea79d25a181855726ec7a41b549cffba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3dc9c71e583ebf4859dc43ad97b24435ea79d25a181855726ec7a41b549cffba", kill_on_drop: false }`
[INFO] [stdout] 3dc9c71e583ebf4859dc43ad97b24435ea79d25a181855726ec7a41b549cffba