[INFO] updating cached repository wmmnola/Lambda_Calculus
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wmmnola/Lambda_Calculus
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wmmnola/Lambda_Calculus" "work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wmmnola/Lambda_Calculus" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmmnola/Lambda_Calculus"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmmnola/Lambda_Calculus'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8924441f9a07c1a8e050cb35fd66472df871b6ad
[INFO] sha for GitHub repo wmmnola/Lambda_Calculus: 8924441f9a07c1a8e050cb35fd66472df871b6ad
[INFO] validating manifest of wmmnola/Lambda_Calculus on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of wmmnola/Lambda_Calculus on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing wmmnola/Lambda_Calculus
[INFO] finished frobbing wmmnola/Lambda_Calculus
[INFO] frobbed toml for wmmnola/Lambda_Calculus written to work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus/Cargo.toml
[INFO] started frobbing wmmnola/Lambda_Calculus
[INFO] finished frobbing wmmnola/Lambda_Calculus
[INFO] frobbed toml for wmmnola/Lambda_Calculus written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmmnola/Lambda_Calculus/Cargo.toml
[INFO] crate wmmnola/Lambda_Calculus already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing wmmnola/Lambda_Calculus against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 81206f454295b8585e33ea8682401735591166e54befde8ae929ccaaca753442
[INFO] running `"docker" "start" "-a" "81206f454295b8585e33ea8682401735591166e54befde8ae929ccaaca753442"`
[INFO] [stderr]    Compiling Lambda_Calculus v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `nest_level`
[INFO] [stderr]   --> src/main.rs:24:28
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn parse(input:&Vec<char>, nest_level: i32) -> bool{
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider prefixing with an underscore: `_nest_level`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let mut f = Function::Function{variable: var, operation: op, nestlevel:1};
[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: crate `Lambda_Calculus` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `lambda_calculus`
[INFO] [stderr] 
[INFO] [stderr] warning: module `Function` should have a snake case name
[INFO] [stderr]  --> src/main.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod Function;
[INFO] [stderr]   |         ^^^^^^^^ help: convert the identifier to snake case: `function`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "81206f454295b8585e33ea8682401735591166e54befde8ae929ccaaca753442"`
[INFO] running `"docker" "rm" "-f" "81206f454295b8585e33ea8682401735591166e54befde8ae929ccaaca753442"`
[INFO] [stdout] 81206f454295b8585e33ea8682401735591166e54befde8ae929ccaaca753442
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 3f1dcd04adde34568bdd1112826cafe2002728db06632809c0ecb7c253c7c767
[INFO] running `"docker" "start" "-a" "3f1dcd04adde34568bdd1112826cafe2002728db06632809c0ecb7c253c7c767"`
[INFO] [stderr]    Compiling Lambda_Calculus v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `nest_level`
[INFO] [stderr]   --> src/main.rs:24:28
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn parse(input:&Vec<char>, nest_level: i32) -> bool{
[INFO] [stderr]    |                            ^^^^^^^^^^ help: consider prefixing with an underscore: `_nest_level`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 |     let mut f = Function::Function{variable: var, operation: op, nestlevel:1};
[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: crate `Lambda_Calculus` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `lambda_calculus`
[INFO] [stderr] 
[INFO] [stderr] warning: module `Function` should have a snake case name
[INFO] [stderr]  --> src/main.rs:1:9
[INFO] [stderr]   |
[INFO] [stderr] 1 | pub mod Function;
[INFO] [stderr]   |         ^^^^^^^^ help: convert the identifier to snake case: `function`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "3f1dcd04adde34568bdd1112826cafe2002728db06632809c0ecb7c253c7c767"`
[INFO] running `"docker" "rm" "-f" "3f1dcd04adde34568bdd1112826cafe2002728db06632809c0ecb7c253c7c767"`
[INFO] [stdout] 3f1dcd04adde34568bdd1112826cafe2002728db06632809c0ecb7c253c7c767
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wmmnola/Lambda_Calculus:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 7ac45d4a6af779a94c32b2ec6760458ef1cb3ba7cc0e602af59553c9744f19e5
[INFO] running `"docker" "start" "-a" "7ac45d4a6af779a94c32b2ec6760458ef1cb3ba7cc0e602af59553c9744f19e5"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/Lambda_Calculus-f371d0463a07e4d6
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "7ac45d4a6af779a94c32b2ec6760458ef1cb3ba7cc0e602af59553c9744f19e5"`
[INFO] running `"docker" "rm" "-f" "7ac45d4a6af779a94c32b2ec6760458ef1cb3ba7cc0e602af59553c9744f19e5"`
[INFO] [stdout] 7ac45d4a6af779a94c32b2ec6760458ef1cb3ba7cc0e602af59553c9744f19e5