[INFO] fetching crate is-tree-macro 0.9.7...
[INFO] checking is-tree-macro-0.9.7 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate is-tree-macro 0.9.7 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate is-tree-macro 0.9.7 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate is-tree-macro 0.9.7
[INFO] finished tweaking crates.io crate is-tree-macro 0.9.7
[INFO] tweaked toml for crates.io crate is-tree-macro 0.9.7 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 5 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7530b91f40361ddb4cbb97bd03987e53fb72ef7f27bb8fa55afbefb2b2b46ff9
[INFO] running `Command { std: "docker" "start" "-a" "7530b91f40361ddb4cbb97bd03987e53fb72ef7f27bb8fa55afbefb2b2b46ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7530b91f40361ddb4cbb97bd03987e53fb72ef7f27bb8fa55afbefb2b2b46ff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7530b91f40361ddb4cbb97bd03987e53fb72ef7f27bb8fa55afbefb2b2b46ff9", kill_on_drop: false }`
[INFO] [stdout] 7530b91f40361ddb4cbb97bd03987e53fb72ef7f27bb8fa55afbefb2b2b46ff9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db382a53b3dfaf3ad06a5dd991bd9546e82bd70c5782f5bcd5b3dfefee3ff1ad
[INFO] running `Command { std: "docker" "start" "-a" "db382a53b3dfaf3ad06a5dd991bd9546e82bd70c5782f5bcd5b3dfefee3ff1ad", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]     Checking proc-macro2 v1.0.86
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.77
[INFO] [stderr]     Checking is-tree-macro v0.9.7 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `named_attribute_value` and `attribute_group` are never used
[INFO] [stdout]   --> src/traits/mod.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub trait AttributeQuery {
[INFO] [stdout]    |           -------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6  |     fn named_attribute_value(&self, path: Vec<&str>) -> Vec<syn::Path> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn attribute_group(&self, path: Vec<&str>) -> Vec<syn::Path> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `has_branches` is never read
[INFO] [stdout]   --> src/type_/structure/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Implementation {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 13 |     pub has_branches: bool, // TODO: I don't think this is used anymore.
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `named_attribute_value` and `attribute_group` are never used
[INFO] [stdout]   --> src/traits/mod.rs:6:8
[INFO] [stdout]    |
[INFO] [stdout] 3  | pub trait AttributeQuery {
[INFO] [stdout]    |           -------------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 6  |     fn named_attribute_value(&self, path: Vec<&str>) -> Vec<syn::Path> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     fn attribute_group(&self, path: Vec<&str>) -> Vec<syn::Path> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `has_branches` is never read
[INFO] [stdout]   --> src/type_/structure/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct Implementation {
[INFO] [stdout]    |            -------------- field in this struct
[INFO] [stdout] 13 |     pub has_branches: bool, // TODO: I don't think this is used anymore.
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.50s
[INFO] running `Command { std: "docker" "inspect" "db382a53b3dfaf3ad06a5dd991bd9546e82bd70c5782f5bcd5b3dfefee3ff1ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db382a53b3dfaf3ad06a5dd991bd9546e82bd70c5782f5bcd5b3dfefee3ff1ad", kill_on_drop: false }`
[INFO] [stdout] db382a53b3dfaf3ad06a5dd991bd9546e82bd70c5782f5bcd5b3dfefee3ff1ad