[INFO] fetching crate stability 0.2.1...
[INFO] building stability-0.2.1 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate stability 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] started tweaking crates.io crate stability 0.2.1
[INFO] finished tweaking crates.io crate stability 0.2.1
[INFO] tweaked toml for crates.io crate stability 0.2.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate stability 0.2.1 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7ec9fa9635add57d2ea3c82210c051405dd4b12f31bcbc046746c329b6c4186
[INFO] running `Command { std: "docker" "start" "-a" "d7ec9fa9635add57d2ea3c82210c051405dd4b12f31bcbc046746c329b6c4186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7ec9fa9635add57d2ea3c82210c051405dd4b12f31bcbc046746c329b6c4186", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7ec9fa9635add57d2ea3c82210c051405dd4b12f31bcbc046746c329b6c4186", kill_on_drop: false }`
[INFO] [stdout] d7ec9fa9635add57d2ea3c82210c051405dd4b12f31bcbc046746c329b6c4186
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3c6c719c620bb37d1ca361d2bc49452c019d827402de8b4a2a11bc660a2c3f66
[INFO] running `Command { std: "docker" "start" "-a" "3c6c719c620bb37d1ca361d2bc49452c019d827402de8b4a2a11bc660a2c3f66", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.41
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling stability v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `attrs` is never used
[INFO] [stdout]   --> src/unstable.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub(crate) trait ItemLike {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 94 |     fn attrs(&self) -> &[syn::Attribute];
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.92s
[INFO] running `Command { std: "docker" "inspect" "3c6c719c620bb37d1ca361d2bc49452c019d827402de8b4a2a11bc660a2c3f66", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c6c719c620bb37d1ca361d2bc49452c019d827402de8b4a2a11bc660a2c3f66", kill_on_drop: false }`
[INFO] [stdout] 3c6c719c620bb37d1ca361d2bc49452c019d827402de8b4a2a11bc660a2c3f66
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "RUSTDOCFLAGS=--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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df0a2a74e74bc4e035de91d7c7b0c51cf8bab2d48f8b14862c3ca0bdbdae401c
[INFO] running `Command { std: "docker" "start" "-a" "df0a2a74e74bc4e035de91d7c7b0c51cf8bab2d48f8b14862c3ca0bdbdae401c", kill_on_drop: false }`
[INFO] [stderr]    Compiling stability v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `attrs` is never used
[INFO] [stdout]   --> src/unstable.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub(crate) trait ItemLike {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 94 |     fn attrs(&self) -> &[syn::Attribute];
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `attrs` is never used
[INFO] [stdout]   --> src/unstable.rs:94:8
[INFO] [stdout]    |
[INFO] [stdout] 93 | pub(crate) trait ItemLike {
[INFO] [stdout]    |                  -------- method in this trait
[INFO] [stdout] 94 |     fn attrs(&self) -> &[syn::Attribute];
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "df0a2a74e74bc4e035de91d7c7b0c51cf8bab2d48f8b14862c3ca0bdbdae401c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df0a2a74e74bc4e035de91d7c7b0c51cf8bab2d48f8b14862c3ca0bdbdae401c", kill_on_drop: false }`
[INFO] [stdout] df0a2a74e74bc4e035de91d7c7b0c51cf8bab2d48f8b14862c3ca0bdbdae401c