[INFO] fetching crate url2 0.0.6...
[INFO] checking url2-0.0.6 against master#6526e5c772f2da07db745c94ca6bb0a591a39ba4 for pr-80920
[INFO] extracting crate url2 0.0.6 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate url2 0.0.6 on toolchain 6526e5c772f2da07db745c94ca6bb0a591a39ba4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate url2 0.0.6
[INFO] finished tweaking crates.io crate url2 0.0.6
[INFO] tweaked toml for crates.io crate url2 0.0.6 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9c58ce59e3beac407eba99ccf56cdb5f2501d513cf78c08b923c890e2a1ef04f
[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" "9c58ce59e3beac407eba99ccf56cdb5f2501d513cf78c08b923c890e2a1ef04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9c58ce59e3beac407eba99ccf56cdb5f2501d513cf78c08b923c890e2a1ef04f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c58ce59e3beac407eba99ccf56cdb5f2501d513cf78c08b923c890e2a1ef04f", kill_on_drop: false }`
[INFO] [stdout] 9c58ce59e3beac407eba99ccf56cdb5f2501d513cf78c08b923c890e2a1ef04f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+6526e5c772f2da07db745c94ca6bb0a591a39ba4" "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] 8f56ae9449a5be933324b70a56d5212e6e8b08efa3f589d8d9c76725eae2c320
[INFO] running `Command { std: "docker" "start" "-a" "8f56ae9449a5be933324b70a56d5212e6e8b08efa3f589d8d9c76725eae2c320", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]     Checking itoa v0.4.7
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling syn v1.0.58
[INFO] [stderr]    Compiling serde_derive v1.0.119
[INFO] [stderr]     Checking serde v1.0.119
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking serde_json v1.0.61
[INFO] [stderr]     Checking url2 v0.0.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0453]: allow(unreachable_code) incompatible with previous forbid
[INFO] [stdout]   --> src/url2.rs:31:27
[INFO] [stdout]    |
[INFO] [stdout] 31 |         Ok(Url2::priv_new(Url::parse(s.as_ref())?))
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]    | 
[INFO] [stdout]   ::: src/lib.rs:2:11
[INFO] [stdout]    |
[INFO] [stdout] 2  | #![forbid(warnings)]
[INFO] [stdout]    |           -------- `forbid` level set here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0453]: allow(unreachable_code) incompatible with previous forbid
[INFO] [stdout]    --> src/url2.rs:184:24
[INFO] [stdout]     |
[INFO] [stdout] 184 |         let url: Url = serde::Deserialize::deserialize(deserializer)?;
[INFO] [stdout]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/lib.rs:2:11
[INFO] [stdout]     |
[INFO] [stdout] 2   | #![forbid(warnings)]
[INFO] [stdout]     |           -------- `forbid` level set here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0453`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `url2`
[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" "8f56ae9449a5be933324b70a56d5212e6e8b08efa3f589d8d9c76725eae2c320", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f56ae9449a5be933324b70a56d5212e6e8b08efa3f589d8d9c76725eae2c320", kill_on_drop: false }`
[INFO] [stdout] 8f56ae9449a5be933324b70a56d5212e6e8b08efa3f589d8d9c76725eae2c320