[INFO] updating cached repository ypkulkar/infix_to_postfix
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ypkulkar/infix_to_postfix
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ypkulkar/infix_to_postfix" "work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/ypkulkar/infix_to_postfix"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/ypkulkar/infix_to_postfix'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ypkulkar/infix_to_postfix" "work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/ypkulkar/infix_to_postfix"`
[INFO] [stderr] Cloning into 'work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/ypkulkar/infix_to_postfix'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8182f88e20c8d721cef222f0bb8abe55b63614e1
[INFO] sha for GitHub repo ypkulkar/infix_to_postfix: 8182f88e20c8d721cef222f0bb8abe55b63614e1
[INFO] validating manifest of ypkulkar/infix_to_postfix on toolchain master#589beb979c0f1a9736e02e578913db88398c3ba5
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ypkulkar/infix_to_postfix on toolchain try#42445ded8fd34235a676755cb5d079658ed51f6a
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ypkulkar/infix_to_postfix
[INFO] finished frobbing ypkulkar/infix_to_postfix
[INFO] frobbed toml for ypkulkar/infix_to_postfix written to work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/ypkulkar/infix_to_postfix/Cargo.toml
[INFO] started frobbing ypkulkar/infix_to_postfix
[INFO] finished frobbing ypkulkar/infix_to_postfix
[INFO] frobbed toml for ypkulkar/infix_to_postfix written to work/ex/pr-60944/sources/try#42445ded8fd34235a676755cb5d079658ed51f6a/gh/ypkulkar/infix_to_postfix/Cargo.toml
[INFO] crate ypkulkar/infix_to_postfix already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+42445ded8fd34235a676755cb5d079658ed51f6a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking ypkulkar/infix_to_postfix against master#589beb979c0f1a9736e02e578913db88398c3ba5 for pr-60944
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60944/worker-4/master#589beb979c0f1a9736e02e578913db88398c3ba5:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60944/sources/master#589beb979c0f1a9736e02e578913db88398c3ba5/gh/ypkulkar/infix_to_postfix:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+589beb979c0f1a9736e02e578913db88398c3ba5-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c946c6df023ad0c8f9d1af95ff24be185968e5d558c393d67371d6c2f45e8bf9
[INFO] running `"docker" "start" "-a" "c946c6df023ad0c8f9d1af95ff24be185968e5d558c393d67371d6c2f45e8bf9"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Checking your v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:134:28
[INFO] [stderr]     |
[INFO] [stderr] 134 |                &InfixToken::Operand(x) => {
[INFO] [stderr]     |                                     ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:140:29
[INFO] [stderr]     |
[INFO] [stderr] 140 |                &InfixToken::Operator(x) => {
[INFO] [stderr]     |                                      ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:172:31
[INFO] [stderr]     |
[INFO] [stderr] 172 |                             InfixToken::Operand(x) => break,
[INFO] [stderr]     |                                                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:134:28
[INFO] [stderr]     |
[INFO] [stderr] 134 |                &InfixToken::Operand(x) => {
[INFO] [stderr]     |                                     ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:140:29
[INFO] [stderr]     |
[INFO] [stderr] 140 |                &InfixToken::Operator(x) => {
[INFO] [stderr]     |                                      ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/lib.rs:172:31
[INFO] [stderr]     |
[INFO] [stderr] 172 |                             InfixToken::Operand(x) => break,
[INFO] [stderr]     |                                                 ^ help: consider prefixing with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `"docker" "inspect" "c946c6df023ad0c8f9d1af95ff24be185968e5d558c393d67371d6c2f45e8bf9"`
[INFO] running `"docker" "rm" "-f" "c946c6df023ad0c8f9d1af95ff24be185968e5d558c393d67371d6c2f45e8bf9"`
[INFO] [stdout] c946c6df023ad0c8f9d1af95ff24be185968e5d558c393d67371d6c2f45e8bf9