[INFO] updating cached repository scampi/falcon
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/scampi/falcon
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/scampi/falcon" "work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/scampi/falcon"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/scampi/falcon'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/scampi/falcon" "work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/scampi/falcon"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/scampi/falcon'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ae5bbcb8e4b04c503f246c4d52e15b1417124731
[INFO] sha for GitHub repo scampi/falcon: ae5bbcb8e4b04c503f246c4d52e15b1417124731
[INFO] validating manifest of scampi/falcon on toolchain master#e305df1846a6d985315917ae0c81b74af8b4e641
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of scampi/falcon on toolchain try#99a7498759a22b5684caf798a98b7e90ad9d2443
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing scampi/falcon
[INFO] finished frobbing scampi/falcon
[INFO] frobbed toml for scampi/falcon written to work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/scampi/falcon/Cargo.toml
[INFO] started frobbing scampi/falcon
[INFO] finished frobbing scampi/falcon
[INFO] frobbed toml for scampi/falcon written to work/ex/pr-60039-1/sources/try#99a7498759a22b5684caf798a98b7e90ad9d2443/gh/scampi/falcon/Cargo.toml
[INFO] crate scampi/falcon already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+99a7498759a22b5684caf798a98b7e90ad9d2443-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking scampi/falcon against master#e305df1846a6d985315917ae0c81b74af8b4e641 for pr-60039-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039-1/worker-6/master#e305df1846a6d985315917ae0c81b74af8b4e641:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039-1/sources/master#e305df1846a6d985315917ae0c81b74af8b4e641/gh/scampi/falcon:/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" "+e305df1846a6d985315917ae0c81b74af8b4e641-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 45fe313426ad16c17b6a8c7b2c922c0d534cf2b05aa4467206ff0aff36762277
[INFO] running `"docker" "start" "-a" "45fe313426ad16c17b6a8c7b2c922c0d534cf2b05aa4467206ff0aff36762277"`
[INFO] [stderr]     Checking memchr v2.1.1
[INFO] [stderr]    Compiling structopt-derive v0.2.14
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking combine v3.6.3
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]     Checking structopt v0.2.14
[INFO] [stderr]     Checking falcon v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]   --> src/parser/program.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Parser,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Parser`
[INFO] [stderr]   --> src/parser/stmt.rs:15:9
[INFO] [stderr]    |
[INFO] [stderr] 15 |         Parser,
[INFO] [stderr]    |         ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `redir`
[INFO] [stderr]   --> src/interpreter/stmt.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Print(exprs, redir) => {
[INFO] [stderr]    |                                ^^^^^ help: consider prefixing with an underscore: `_redir`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `redir`
[INFO] [stderr]   --> src/interpreter/stmt.rs:26:32
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Print(exprs, redir) => {
[INFO] [stderr]    |                                ^^^^^ help: consider prefixing with an underscore: `_redir`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Exit`
[INFO] [stderr]   --> src/interpreter/stmt.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Exit(isize),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `empty`
[INFO] [stderr]   --> src/parser/ast.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn empty() -> Program {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Exit`
[INFO] [stderr]   --> src/interpreter/stmt.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Exit(isize),
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 44.36s
[INFO] running `"docker" "inspect" "45fe313426ad16c17b6a8c7b2c922c0d534cf2b05aa4467206ff0aff36762277"`
[INFO] running `"docker" "rm" "-f" "45fe313426ad16c17b6a8c7b2c922c0d534cf2b05aa4467206ff0aff36762277"`
[INFO] [stdout] 45fe313426ad16c17b6a8c7b2c922c0d534cf2b05aa4467206ff0aff36762277