[INFO] cloning repository glfmn/glitter
[INFO] running `"git" "clone" "--bare" "git://github.com/glfmn/glitter.git" "work/cache/sources/gh/glfmn/glitter"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/glfmn/glitter'...
[INFO] running `"git" "clone" "work/cache/sources/gh/glfmn/glitter" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/glfmn/glitter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/glfmn/glitter'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/glfmn/glitter" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/glfmn/glitter"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/glfmn/glitter'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] af651f8d983af9693af5ffe3333a092aa91bb228
[INFO] sha for GitHub repo glfmn/glitter: af651f8d983af9693af5ffe3333a092aa91bb228
[INFO] validating manifest of glfmn/glitter on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of glfmn/glitter on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing glfmn/glitter
[INFO] finished frobbing glfmn/glitter
[INFO] frobbed toml for glfmn/glitter written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/glfmn/glitter/Cargo.toml
[INFO] started frobbing glfmn/glitter
[INFO] finished frobbing glfmn/glitter
[INFO] frobbed toml for glfmn/glitter written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/glfmn/glitter/Cargo.toml
[INFO] crate glfmn/glitter already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr] error: the lock file /mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/glfmn/glitter/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking glfmn/glitter against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-6/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/glfmn/glitter:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 91fa443f571e148ee0a6982e5c1c2a5207cc7739fe53a48e9cf19142c9c7ad54
[INFO] running `"docker" "start" "-a" "91fa443f571e148ee0a6982e5c1c2a5207cc7739fe53a48e9cf19142c9c7ad54"`
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking libz-sys v1.0.25
[INFO] [stderr]     Checking clap v2.29.4
[INFO] [stderr]     Checking curl-sys v0.4.20
[INFO] [stderr]     Checking libssh2-sys v0.2.11
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking libgit2-sys v0.7.11
[INFO] [stderr]     Checking git2 v0.7.5
[INFO] [stderr]     Checking proptest v0.8.7
[INFO] [stderr]     Checking glit v0.1.4 (/opt/crater/workdir)
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | / /// Parse a string from slice
[INFO] [stderr] 314 | | ///
[INFO] [stderr] 315 | | /// https://github.com/Rydgel/monkey-rust/blob/master/lib/lexer/mod.rs
[INFO] [stderr]     | |______________________________________________________________________^
[INFO] [stderr] 316 | / named! {
[INFO] [stderr] 317 | |     string<String>,
[INFO] [stderr] 318 | |     delimited!(
[INFO] [stderr] 319 | |         tag!("\'"),
[INFO] [stderr] ...   |
[INFO] [stderr] 322 | |     )
[INFO] [stderr] 323 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: unused doc comment
[INFO] [stderr]    --> src/parser.rs:313:1
[INFO] [stderr]     |
[INFO] [stderr] 313 | / /// Parse a string from slice
[INFO] [stderr] 314 | | ///
[INFO] [stderr] 315 | | /// https://github.com/Rydgel/monkey-rust/blob/master/lib/lexer/mod.rs
[INFO] [stderr]     | |______________________________________________________________________^
[INFO] [stderr] 316 | / named! {
[INFO] [stderr] 317 | |     string<String>,
[INFO] [stderr] 318 | |     delimited!(
[INFO] [stderr] 319 | |         tag!("\'"),
[INFO] [stderr] ...   |
[INFO] [stderr] 322 | |     )
[INFO] [stderr] 323 | | }
[INFO] [stderr]     | |_- rustdoc does not generate documentation for macro expansions
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_doc_comments)] on by default
[INFO] [stderr]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `arb_tree`
[INFO] [stderr]    --> src/ast.rs:352:1
[INFO] [stderr]     |
[INFO] [stderr] 352 | pub fn arb_tree(n: usize) -> impl Strategy<Value = Tree> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.88s
[INFO] running `"docker" "inspect" "91fa443f571e148ee0a6982e5c1c2a5207cc7739fe53a48e9cf19142c9c7ad54"`
[INFO] running `"docker" "rm" "-f" "91fa443f571e148ee0a6982e5c1c2a5207cc7739fe53a48e9cf19142c9c7ad54"`
[INFO] [stdout] 91fa443f571e148ee0a6982e5c1c2a5207cc7739fe53a48e9cf19142c9c7ad54