[INFO] updating cached repository racr-rust/racrc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/racr-rust/racrc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/racr-rust/racrc" "work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/racr-rust/racrc" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/racr-rust/racrc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/racr-rust/racrc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a71a84fe9febfd4e03781365f4bd31943a305de0
[INFO] sha for GitHub repo racr-rust/racrc: a71a84fe9febfd4e03781365f4bd31943a305de0
[INFO] validating manifest of racr-rust/racrc 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 racr-rust/racrc 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 racr-rust/racrc
[INFO] finished frobbing racr-rust/racrc
[INFO] frobbed toml for racr-rust/racrc written to work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc/Cargo.toml
[INFO] started frobbing racr-rust/racrc
[INFO] finished frobbing racr-rust/racrc
[INFO] frobbed toml for racr-rust/racrc written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/racr-rust/racrc/Cargo.toml
[INFO] crate racr-rust/racrc 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 racr-rust/racrc 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-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc:/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] 3cde621bacc3e125b34449eb091e4e62d5366e9845ea4ad5f17a3229a30473f8
[INFO] running `"docker" "start" "-a" "3cde621bacc3e125b34449eb091e4e62d5366e9845ea4ad5f17a3229a30473f8"`
[INFO] [stderr]    Compiling serde v1.0.81
[INFO] [stderr]    Compiling lalrpop-util v0.16.2
[INFO] [stderr]    Compiling racr v0.1.0 (https://github.com/racr-rust/racr-rust.git?rev=1f8df4bb8685e874bdfbd661c18badd20804b3e7#1f8df4bb)
[INFO] [stderr]    Compiling inflections v1.1.1
[INFO] [stderr]    Compiling new_debug_unreachable v1.0.1
[INFO] [stderr]    Compiling memchr v2.1.1
[INFO] [stderr]    Compiling phf_generator v0.7.23
[INFO] [stderr]    Compiling syn v0.15.22
[INFO] [stderr]    Compiling block-buffer v0.7.1
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling string_cache_codegen v0.4.2
[INFO] [stderr]    Compiling sha2 v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling string_cache v0.7.3
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.81
[INFO] [stderr]    Compiling docopt v1.0.2
[INFO] [stderr]    Compiling lalrpop v0.16.2
[INFO] [stderr]    Compiling racr-parser v0.1.0 (https://github.com/racr-rust/racr-parser.git?rev=4c4ee0614c47dbacadcc7c8546595c52e6881c63#4c4ee061)
[INFO] [stderr]    Compiling racrc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/main.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_file`
[INFO] [stderr]   --> src/main.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut output_file = File::create(output_filepath).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_output_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `racr_file`
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let racr_file = racr::FileContent {
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_racr_file`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut output_file = File::create(output_filepath).unwrap();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 1m 46s
[INFO] running `"docker" "inspect" "3cde621bacc3e125b34449eb091e4e62d5366e9845ea4ad5f17a3229a30473f8"`
[INFO] running `"docker" "rm" "-f" "3cde621bacc3e125b34449eb091e4e62d5366e9845ea4ad5f17a3229a30473f8"`
[INFO] [stdout] 3cde621bacc3e125b34449eb091e4e62d5366e9845ea4ad5f17a3229a30473f8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc:/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] 7cb61fa733ee38ad4560533172a69e327164745763a47708a1965cb22f3a5be8
[INFO] running `"docker" "start" "-a" "7cb61fa733ee38ad4560533172a69e327164745763a47708a1965cb22f3a5be8"`
[INFO] [stderr]    Compiling racrc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]  --> src/main.rs:7:21
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::io::{Read, Write};
[INFO] [stderr]   |                     ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `output_file`
[INFO] [stderr]   --> src/main.rs:18:13
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut output_file = File::create(output_filepath).unwrap();
[INFO] [stderr]    |             ^^^^^^^^^^^ help: consider prefixing with an underscore: `_output_file`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `racr_file`
[INFO] [stderr]   --> src/main.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 |     let racr_file = racr::FileContent {
[INFO] [stderr]    |         ^^^^^^^^^ help: consider prefixing with an underscore: `_racr_file`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:18:9
[INFO] [stderr]    |
[INFO] [stderr] 18 |     let mut output_file = File::create(output_filepath).unwrap();
[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]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `"docker" "inspect" "7cb61fa733ee38ad4560533172a69e327164745763a47708a1965cb22f3a5be8"`
[INFO] running `"docker" "rm" "-f" "7cb61fa733ee38ad4560533172a69e327164745763a47708a1965cb22f3a5be8"`
[INFO] [stdout] 7cb61fa733ee38ad4560533172a69e327164745763a47708a1965cb22f3a5be8
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-1/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/racr-rust/racrc:/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] e30c8864b9768e9dd4408f9900e33a609f064ad368a2f304f87921838b7459de
[INFO] running `"docker" "start" "-a" "e30c8864b9768e9dd4408f9900e33a609f064ad368a2f304f87921838b7459de"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/racrc-66faca2e407c516d
[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" "e30c8864b9768e9dd4408f9900e33a609f064ad368a2f304f87921838b7459de"`
[INFO] running `"docker" "rm" "-f" "e30c8864b9768e9dd4408f9900e33a609f064ad368a2f304f87921838b7459de"`
[INFO] [stdout] e30c8864b9768e9dd4408f9900e33a609f064ad368a2f304f87921838b7459de