[INFO] fetching crate buf-min 0.4.0...
[INFO] checking buf-min-0.4.0 against try#575650af7d7ca88602df28e39d27bf3e456c306e for pr-80579
[INFO] extracting crate buf-min 0.4.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate buf-min 0.4.0 on toolchain 575650af7d7ca88602df28e39d27bf3e456c306e
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate buf-min 0.4.0
[INFO] finished tweaking crates.io crate buf-min 0.4.0
[INFO] tweaked toml for crates.io crate buf-min 0.4.0 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41f9e0c2b11e968102ba374183b914f41b16a41de2d864f5442769c54ea1c3b2
[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" "41f9e0c2b11e968102ba374183b914f41b16a41de2d864f5442769c54ea1c3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41f9e0c2b11e968102ba374183b914f41b16a41de2d864f5442769c54ea1c3b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41f9e0c2b11e968102ba374183b914f41b16a41de2d864f5442769c54ea1c3b2", kill_on_drop: false }`
[INFO] [stdout] 41f9e0c2b11e968102ba374183b914f41b16a41de2d864f5442769c54ea1c3b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+575650af7d7ca88602df28e39d27bf3e456c306e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ed11d966d167e065e40abf9bbe8122241e2af9ea68fe0d87e27e9a225aa82bc
[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" "3ed11d966d167e065e40abf9bbe8122241e2af9ea68fe0d87e27e9a225aa82bc", kill_on_drop: false }`
[INFO] [stderr]     Checking buf-min v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/lib.rs:99:1
[INFO] [stdout]     |
[INFO] [stdout] 99  | / macro_rules! implement {
[INFO] [stdout] 100 | |     ($base:path) => {
[INFO] [stdout] 101 | |         pub use $base::{Bytes, BytesMut};
[INFO] [stdout] 102 | |
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |     };
[INFO] [stdout] 174 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition
[INFO] [stdout]    --> src/lib.rs:99:1
[INFO] [stdout]     |
[INFO] [stdout] 99  | / macro_rules! implement {
[INFO] [stdout] 100 | |     ($base:path) => {
[INFO] [stdout] 101 | |         pub use $base::{Bytes, BytesMut};
[INFO] [stdout] 102 | |
[INFO] [stdout] ...   |
[INFO] [stdout] 173 | |     };
[INFO] [stdout] 174 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_macros)]` on by default
[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 0.16s
[INFO] running `Command { std: "docker" "inspect" "3ed11d966d167e065e40abf9bbe8122241e2af9ea68fe0d87e27e9a225aa82bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ed11d966d167e065e40abf9bbe8122241e2af9ea68fe0d87e27e9a225aa82bc", kill_on_drop: false }`
[INFO] [stdout] 3ed11d966d167e065e40abf9bbe8122241e2af9ea68fe0d87e27e9a225aa82bc