[INFO] fetching crate cpp_to_rust_common 0.2.3...
[INFO] testing cpp_to_rust_common-0.2.3 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] extracting crate cpp_to_rust_common 0.2.3 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate cpp_to_rust_common 0.2.3 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cpp_to_rust_common 0.2.3
[INFO] finished tweaking crates.io crate cpp_to_rust_common 0.2.3
[INFO] tweaked toml for crates.io crate cpp_to_rust_common 0.2.3 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c7d4699ade8886c814d383f7d5933871a39843b7974d0f6e560203558432aaf7
[INFO] running `Command { std: "docker" "start" "-a" "c7d4699ade8886c814d383f7d5933871a39843b7974d0f6e560203558432aaf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c7d4699ade8886c814d383f7d5933871a39843b7974d0f6e560203558432aaf7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c7d4699ade8886c814d383f7d5933871a39843b7974d0f6e560203558432aaf7", kill_on_drop: false }`
[INFO] [stdout] c7d4699ade8886c814d383f7d5933871a39843b7974d0f6e560203558432aaf7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9657531efb9c54967458e1572a9aa32208c15e2dd3e43352f4b51c69e0c1ee8
[INFO] running `Command { std: "docker" "start" "-a" "d9657531efb9c54967458e1572a9aa32208c15e2dd3e43352f4b51c69e0c1ee8", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]    Compiling backtrace v0.2.3
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling serde v0.9.15
[INFO] [stderr]    Compiling rustc-demangle v0.1.21
[INFO] [stderr]    Compiling itoa v0.3.4
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling byteorder v1.4.3
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling dbghelp-sys v0.2.0
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling term-painter v0.2.4
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling backtrace-sys v0.1.37
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling serde_codegen_internals v0.14.2
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling num-traits v0.1.43
[INFO] [stderr]    Compiling serde_derive v0.9.15
[INFO] [stderr]    Compiling toml v0.2.1
[INFO] [stderr]    Compiling serde_json v0.9.10
[INFO] [stderr]    Compiling bincode v0.7.0
[INFO] [stderr]    Compiling error-chain v0.5.0
[INFO] [stderr]    Compiling cpp_to_rust_common v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/log.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / lazy_static! {
[INFO] [stdout] 151 | |   pub static ref DEFAULT_LOGGER: Mutex<Logger> = Mutex::new(Logger::new());
[INFO] [stdout] 152 | |
[INFO] [stdout] 153 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/log.rs:129:11
[INFO] [stdout]     |
[INFO] [stdout] 129 |       let mut file = self.files.get_mut(&category).unwrap();
[INFO] [stdout]     |           ----^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.79s
[INFO] running `Command { std: "docker" "inspect" "d9657531efb9c54967458e1572a9aa32208c15e2dd3e43352f4b51c69e0c1ee8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9657531efb9c54967458e1572a9aa32208c15e2dd3e43352f4b51c69e0c1ee8", kill_on_drop: false }`
[INFO] [stdout] d9657531efb9c54967458e1572a9aa32208c15e2dd3e43352f4b51c69e0c1ee8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 49547fb7642d1b7e413c3f270b0a5e1b6f24ea1e13856d32e153e08f0f5c40c2
[INFO] running `Command { std: "docker" "start" "-a" "49547fb7642d1b7e413c3f270b0a5e1b6f24ea1e13856d32e153e08f0f5c40c2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/log.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / lazy_static! {
[INFO] [stdout] 151 | |   pub static ref DEFAULT_LOGGER: Mutex<Logger> = Mutex::new(Logger::new());
[INFO] [stdout] 152 | |
[INFO] [stdout] 153 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cpp_to_rust_common v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/log.rs:129:11
[INFO] [stdout]     |
[INFO] [stdout] 129 |       let mut file = self.files.get_mut(&category).unwrap();
[INFO] [stdout]     |           ----^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> src/log.rs:150:1
[INFO] [stdout]     |
[INFO] [stdout] 150 | / lazy_static! {
[INFO] [stdout] 151 | |   pub static ref DEFAULT_LOGGER: Mutex<Logger> = Mutex::new(Logger::new());
[INFO] [stdout] 152 | |
[INFO] [stdout] 153 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/errors.rs:8:1
[INFO] [stdout]    |
[INFO] [stdout] 8  | / error_chain! {
[INFO] [stdout] 9  | |   foreign_links {
[INFO] [stdout] 10 | |     std::io::Error, IO;
[INFO] [stdout] 11 | |     ::regex::Error, Regex;
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |   }
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/log.rs:129:11
[INFO] [stdout]     |
[INFO] [stdout] 129 |       let mut file = self.files.get_mut(&category).unwrap();
[INFO] [stdout]     |           ----^^^^
[INFO] [stdout]     |           |
[INFO] [stdout]     |           help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.75s
[INFO] running `Command { std: "docker" "inspect" "49547fb7642d1b7e413c3f270b0a5e1b6f24ea1e13856d32e153e08f0f5c40c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49547fb7642d1b7e413c3f270b0a5e1b6f24ea1e13856d32e153e08f0f5c40c2", kill_on_drop: false }`
[INFO] [stdout] 49547fb7642d1b7e413c3f270b0a5e1b6f24ea1e13856d32e153e08f0f5c40c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b214cd5e15db34990ec94dfa3929f85fb27665de346972c18f700402ce2f0fe2
[INFO] running `Command { std: "docker" "start" "-a" "b214cd5e15db34990ec94dfa3929f85fb27665de346972c18f700402ce2f0fe2", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: use of deprecated constant `std::sync::ONCE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> src/log.rs:150:1
[INFO] [stderr]     |
[INFO] [stderr] 150 | / lazy_static! {
[INFO] [stderr] 151 | |   pub static ref DEFAULT_LOGGER: Mutex<Logger> = Mutex::new(Logger::new());
[INFO] [stderr] 152 | |
[INFO] [stderr] 153 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `__lazy_static_create` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]   --> src/errors.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / error_chain! {
[INFO] [stderr] 9  | |   foreign_links {
[INFO] [stderr] 10 | |     std::io::Error, IO;
[INFO] [stderr] 11 | |     ::regex::Error, Regex;
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |   }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/errors.rs:8:1
[INFO] [stderr]    |
[INFO] [stderr] 8  | / error_chain! {
[INFO] [stderr] 9  | |   foreign_links {
[INFO] [stderr] 10 | |     std::io::Error, IO;
[INFO] [stderr] 11 | |     ::regex::Error, Regex;
[INFO] [stderr] ...  |
[INFO] [stderr] 19 | |   }
[INFO] [stderr] 20 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this warning originates in the macro `error_chain` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/log.rs:129:11
[INFO] [stderr]     |
[INFO] [stderr] 129 |       let mut file = self.files.get_mut(&category).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] warning: `cpp_to_rust_common` (lib) generated 4 warnings
[INFO] [stderr] warning: `cpp_to_rust_common` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cpp_to_rust_common-30a81741a320b937)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test tests::utils::join ... ok
[INFO] [stdout] test tests::utils::path_buf_with_added ... ok
[INFO] [stdout] test tests::utils::case_operations ... ok
[INFO] [stdout] test tests::utils::word_iterator ... ok
[INFO] [stdout] test tests::utils::word_iterator2 ... ok
[INFO] [stdout] test tests::utils::word_iterator3 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cpp_to_rust_common
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "b214cd5e15db34990ec94dfa3929f85fb27665de346972c18f700402ce2f0fe2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b214cd5e15db34990ec94dfa3929f85fb27665de346972c18f700402ce2f0fe2", kill_on_drop: false }`
[INFO] [stdout] b214cd5e15db34990ec94dfa3929f85fb27665de346972c18f700402ce2f0fe2