[INFO] updating cached repository https://github.com/albfan/rust-tree-sitter-ast-viewer
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c78b9692af1cbfe0e60c9d3f1e75dd8c426822c0
[INFO] checking albfan/rust-tree-sitter-ast-viewer against try#8a5e87609850cdd8679aada01eb0f3062f254ca8 for pr-71140
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falbfan%2Frust-tree-sitter-ast-viewer" "/workspace/builds/worker-8/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/albfan/rust-tree-sitter-ast-viewer on toolchain 8a5e87609850cdd8679aada01eb0f3062f254ca8
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/albfan/rust-tree-sitter-ast-viewer
[INFO] finished tweaking git repo https://github.com/albfan/rust-tree-sitter-ast-viewer
[INFO] tweaked toml for git repo https://github.com/albfan/rust-tree-sitter-ast-viewer written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/albfan/rust-tree-sitter-ast-viewer already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+8a5e87609850cdd8679aada01eb0f3062f254ca8" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b2e4e92c23335b18c6761b904f3426588f4bf33a6b550651108f684980e19673
[INFO] running `"docker" "start" "-a" "b2e4e92c23335b18c6761b904f3426588f4bf33a6b550651108f684980e19673"`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling tree-sitter v0.3.4 (https://github.com/tree-sitter/rust-tree-sitter#85347541)
[INFO] [stderr]    Compiling tree-sitter-ast-viewer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]  --> build.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::env;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> build.rs:23:13
[INFO] [stderr]    |
[INFO] [stderr] 23 |         let mut parser_dir: PathBuf = ["fixtures", path.unwrap().file_name().to_str().unwrap(), "src"].iter().collect();
[INFO] [stderr]    |             ----^^^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Checking memchr v2.1.2
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.82
[INFO] [stderr] warning: In file included from vendor/tree-sitter/src/runtime/runtime.c:9:0:
[INFO] [stderr] warning: vendor/tree-sitter/src/runtime/get_changed_ranges.c: In function 'ts_subtree_get_changed_ranges':
[INFO] [stderr] warning: vendor/tree-sitter/src/runtime/get_changed_ranges.c:373:12: warning: this statement may fall through [-Wimplicit-fallthrough=]
[INFO] [stderr] warning:          if (ts_range_array_intersects(
[INFO] [stderr] warning:             ^
[INFO] [stderr] warning: vendor/tree-sitter/src/runtime/get_changed_ranges.c:384:7: note: here
[INFO] [stderr] warning:        case IteratorMayDiffer:
[INFO] [stderr] warning:        ^~~~
[INFO] [stderr] warning: value assigned to `language` is never read
[INFO] [stderr]   --> src/main.rs:34:7
[INFO] [stderr]    |
[INFO] [stderr] 34 |   let mut language = unsafe { tree_sitter_rust() };
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_python`
[INFO] [stderr]   --> src/main.rs:12:16
[INFO] [stderr]    |
[INFO] [stderr] 12 |   extern "C" { fn tree_sitter_python() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_ruby`
[INFO] [stderr]   --> src/main.rs:13:16
[INFO] [stderr]    |
[INFO] [stderr] 13 |   extern "C" { fn tree_sitter_ruby() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_haskell`
[INFO] [stderr]   --> src/main.rs:14:16
[INFO] [stderr]    |
[INFO] [stderr] 14 |   extern "C" { fn tree_sitter_haskell() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_cpp`
[INFO] [stderr]   --> src/main.rs:15:16
[INFO] [stderr]    |
[INFO] [stderr] 15 |   extern "C" { fn tree_sitter_cpp() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_bash`
[INFO] [stderr]   --> src/main.rs:17:16
[INFO] [stderr]    |
[INFO] [stderr] 17 |   extern "C" { fn tree_sitter_bash() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: foreign function is never used: `tree_sitter_php`
[INFO] [stderr]   --> src/main.rs:20:16
[INFO] [stderr]    |
[INFO] [stderr] 20 |   extern "C" { fn tree_sitter_php() -> Language; }
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 7 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `language` is never read
[INFO] [stderr]   --> src/main.rs:34:7
[INFO] [stderr]    |
[INFO] [stderr] 34 |   let mut language = unsafe { tree_sitter_rust() };
[INFO] [stderr]    |       ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.54s
[INFO] running `"docker" "inspect" "b2e4e92c23335b18c6761b904f3426588f4bf33a6b550651108f684980e19673"`
[INFO] running `"docker" "rm" "-f" "b2e4e92c23335b18c6761b904f3426588f4bf33a6b550651108f684980e19673"`
[INFO] [stdout] b2e4e92c23335b18c6761b904f3426588f4bf33a6b550651108f684980e19673