[INFO] updating cached repository albfan/rust-tree-sitter-ast-viewer
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/albfan/rust-tree-sitter-ast-viewer
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/albfan/rust-tree-sitter-ast-viewer" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/albfan/rust-tree-sitter-ast-viewer"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/albfan/rust-tree-sitter-ast-viewer'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/albfan/rust-tree-sitter-ast-viewer" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/albfan/rust-tree-sitter-ast-viewer"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/albfan/rust-tree-sitter-ast-viewer'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c78b9692af1cbfe0e60c9d3f1e75dd8c426822c0
[INFO] sha for GitHub repo albfan/rust-tree-sitter-ast-viewer: c78b9692af1cbfe0e60c9d3f1e75dd8c426822c0
[INFO] validating manifest of albfan/rust-tree-sitter-ast-viewer on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of albfan/rust-tree-sitter-ast-viewer on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing albfan/rust-tree-sitter-ast-viewer
[INFO] finished frobbing albfan/rust-tree-sitter-ast-viewer
[INFO] frobbed toml for albfan/rust-tree-sitter-ast-viewer written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/albfan/rust-tree-sitter-ast-viewer/Cargo.toml
[INFO] started frobbing albfan/rust-tree-sitter-ast-viewer
[INFO] finished frobbing albfan/rust-tree-sitter-ast-viewer
[INFO] frobbed toml for albfan/rust-tree-sitter-ast-viewer written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/albfan/rust-tree-sitter-ast-viewer/Cargo.toml
[INFO] crate albfan/rust-tree-sitter-ast-viewer already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking albfan/rust-tree-sitter-ast-viewer against master#60960a260f7b5c695fd0717311d72ce62dd4eb43 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/master#60960a260f7b5c695fd0717311d72ce62dd4eb43:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/albfan/rust-tree-sitter-ast-viewer:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] f5bf41b196f04c4a616e30a7bedf07cb00fca164bc7c1820499113da9eb9d7ec
[INFO] running `"docker" "start" "-a" "f5bf41b196f04c4a616e30a7bedf07cb00fca164bc7c1820499113da9eb9d7ec"`
[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/crater/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]     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: value assigned to `language` is never read
[INFO] [stderr]   --> src/main.rs:34:11
[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: value assigned to `language` is never read
[INFO] [stderr]   --> src/main.rs:34:11
[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]     Finished dev [unoptimized + debuginfo] target(s) in 43.16s
[INFO] running `"docker" "inspect" "f5bf41b196f04c4a616e30a7bedf07cb00fca164bc7c1820499113da9eb9d7ec"`
[INFO] running `"docker" "rm" "-f" "f5bf41b196f04c4a616e30a7bedf07cb00fca164bc7c1820499113da9eb9d7ec"`
[INFO] [stdout] f5bf41b196f04c4a616e30a7bedf07cb00fca164bc7c1820499113da9eb9d7ec