[INFO] crate printf-rs 0.1.1 is already in cache
[INFO] extracting crate printf-rs 0.1.1 into work/ex/beta-1.37-6/sources/1.36.0/reg/printf-rs/0.1.1
[INFO] extracting crate printf-rs 0.1.1 into work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/printf-rs/0.1.1
[INFO] validating manifest of printf-rs-0.1.1 on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of printf-rs-0.1.1 on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing printf-rs-0.1.1
[INFO] finished frobbing printf-rs-0.1.1
[INFO] frobbed toml for printf-rs-0.1.1 written to work/ex/beta-1.37-6/sources/1.36.0/reg/printf-rs/0.1.1/Cargo.toml
[INFO] started frobbing printf-rs-0.1.1
[INFO] finished frobbing printf-rs-0.1.1
[INFO] frobbed toml for printf-rs-0.1.1 written to work/ex/beta-1.37-6/sources/beta-2019-07-23/reg/printf-rs/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing printf-rs-0.1.1 against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/printf-rs/0.1.1:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 01310e13be453599537254d4a15af8c31dfb73edda3ec326f5a57b95f88e7552
[INFO] running `"docker" "start" "-a" "01310e13be453599537254d4a15af8c31dfb73edda3ec326f5a57b95f88e7552"`
[INFO] [stderr]    Compiling printf-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: static variable `enable_utf8` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub static ref enable_utf8: () = {
[INFO] [stderr]    |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `ENABLE_UTF8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `"docker" "inspect" "01310e13be453599537254d4a15af8c31dfb73edda3ec326f5a57b95f88e7552"`
[INFO] running `"docker" "rm" "-f" "01310e13be453599537254d4a15af8c31dfb73edda3ec326f5a57b95f88e7552"`
[INFO] [stdout] 01310e13be453599537254d4a15af8c31dfb73edda3ec326f5a57b95f88e7552
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/printf-rs/0.1.1:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] a149f1f20f5e3670e9437f599b5ed49ed5e451c5528f25298dae9471e688325a
[INFO] running `"docker" "start" "-a" "a149f1f20f5e3670e9437f599b5ed49ed5e451c5528f25298dae9471e688325a"`
[INFO] [stderr]    Compiling printf-rs v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: static variable `enable_utf8` should have an upper case name
[INFO] [stderr]   --> src/lib.rs:31:20
[INFO] [stderr]    |
[INFO] [stderr] 31 |     pub static ref enable_utf8: () = {
[INFO] [stderr]    |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `ENABLE_UTF8`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_upper_case_globals)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `"docker" "inspect" "a149f1f20f5e3670e9437f599b5ed49ed5e451c5528f25298dae9471e688325a"`
[INFO] running `"docker" "rm" "-f" "a149f1f20f5e3670e9437f599b5ed49ed5e451c5528f25298dae9471e688325a"`
[INFO] [stdout] a149f1f20f5e3670e9437f599b5ed49ed5e451c5528f25298dae9471e688325a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/reg/printf-rs/0.1.1:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] 89c45069072084a3bc6e63acfd2c3e0127231847a4b85497a7fb0cf23d666cbf
[INFO] running `"docker" "start" "-a" "89c45069072084a3bc6e63acfd2c3e0127231847a4b85497a7fb0cf23d666cbf"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/printf_rs-b322790098f1735d
[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] [stderr]    Doc-tests printf-rs
[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" "89c45069072084a3bc6e63acfd2c3e0127231847a4b85497a7fb0cf23d666cbf"`
[INFO] running `"docker" "rm" "-f" "89c45069072084a3bc6e63acfd2c3e0127231847a4b85497a7fb0cf23d666cbf"`
[INFO] [stdout] 89c45069072084a3bc6e63acfd2c3e0127231847a4b85497a7fb0cf23d666cbf