[INFO] fetching crate wearte_helpers 0.0.2...
[INFO] checking wearte_helpers-0.0.2 against try#3e22d1f9053c0fc87629b3c6d5d9567856368e5d for pr-78714
[INFO] extracting crate wearte_helpers 0.0.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wearte_helpers 0.0.2 on toolchain 3e22d1f9053c0fc87629b3c6d5d9567856368e5d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wearte_helpers 0.0.2
[INFO] finished tweaking crates.io crate wearte_helpers 0.0.2
[INFO] tweaked toml for crates.io crate wearte_helpers 0.0.2 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ad07c9f0b043743652351843fa444209fc9e343b4cdf3621f8c1f7f29ed68d5d
[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" "ad07c9f0b043743652351843fa444209fc9e343b4cdf3621f8c1f7f29ed68d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ad07c9f0b043743652351843fa444209fc9e343b4cdf3621f8c1f7f29ed68d5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ad07c9f0b043743652351843fa444209fc9e343b4cdf3621f8c1f7f29ed68d5d", kill_on_drop: false }`
[INFO] [stdout] ad07c9f0b043743652351843fa444209fc9e343b4cdf3621f8c1f7f29ed68d5d
[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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+3e22d1f9053c0fc87629b3c6d5d9567856368e5d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 740e41cbbbeca0902b7c5ac6d4d04cc628d6dd09c70cf128db3f9c778ea1de43
[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" "740e41cbbbeca0902b7c5ac6d4d04cc628d6dd09c70cf128db3f9c778ea1de43", kill_on_drop: false }`
[INFO] [stderr]    Compiling wearte_helpers v0.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling nom v4.2.3
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling v_escape_derive v0.5.6
[INFO] [stderr]     Checking v_escape v0.7.4
[INFO] [stderr]     Checking v_htmlescape v0.4.5
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(wearte_nightly, feature(specialization))]
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]  --> src/lib.rs:1:37
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(wearte_nightly, feature(specialization))]
[INFO] [stdout]   |                                     ^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]   = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]   = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.44s
[INFO] running `Command { std: "docker" "inspect" "740e41cbbbeca0902b7c5ac6d4d04cc628d6dd09c70cf128db3f9c778ea1de43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "740e41cbbbeca0902b7c5ac6d4d04cc628d6dd09c70cf128db3f9c778ea1de43", kill_on_drop: false }`
[INFO] [stdout] 740e41cbbbeca0902b7c5ac6d4d04cc628d6dd09c70cf128db3f9c778ea1de43