[INFO] cloning repository https://github.com/edwardwohaijun/unwrap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/edwardwohaijun/unwrap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwardwohaijun%2Funwrap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwardwohaijun%2Funwrap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea51b3fb4617fefb875e90081c9e1577228a8e1a
[INFO] testing edwardwohaijun/unwrap against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedwardwohaijun%2Funwrap" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edwardwohaijun/unwrap on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/edwardwohaijun/unwrap
[INFO] finished tweaking git repo https://github.com/edwardwohaijun/unwrap
[INFO] tweaked toml for git repo https://github.com/edwardwohaijun/unwrap written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/edwardwohaijun/unwrap already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tree_magic v0.2.1
[INFO] [stderr]   Downloaded unrar v0.4.3
[INFO] [stderr]   Downloaded unrar_sys v0.2.0
[INFO] [stderr]   Downloaded rust-lzma v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 871cd8d017d76709f7c2d1ed93002ad1af96094ab5e8f9c0c0318b62cbc3811a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "871cd8d017d76709f7c2d1ed93002ad1af96094ab5e8f9c0c0318b62cbc3811a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "871cd8d017d76709f7c2d1ed93002ad1af96094ab5e8f9c0c0318b62cbc3811a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "871cd8d017d76709f7c2d1ed93002ad1af96094ab5e8f9c0c0318b62cbc3811a", kill_on_drop: false }`
[INFO] [stdout] 871cd8d017d76709f7c2d1ed93002ad1af96094ab5e8f9c0c0318b62cbc3811a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0379e776ada8c6af1e0ac3c329b5aea855017c5fad191b68b1754a3bd4fb713a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0379e776ada8c6af1e0ac3c329b5aea855017c5fad191b68b1754a3bd4fb713a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]    Compiling autocfg v0.1.2
[INFO] [stderr]    Compiling crc32fast v1.1.2
[INFO] [stderr]    Compiling winapi v0.2.8
[INFO] [stderr]    Compiling utf8-ranges v0.1.3
[INFO] [stderr]    Compiling ordermap v0.3.5
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling regex-syntax v0.3.9
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling nom v2.2.1
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling unrar_sys v0.2.0
[INFO] [stderr]    Compiling rand_jitter v0.1.3
[INFO] [stderr]    Compiling rust-lzma v0.4.0
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling smallvec v0.6.8
[INFO] [stderr]    Compiling rand_pcg v0.1.1
[INFO] [stderr]    Compiling aho-corasick v0.6.9
[INFO] [stderr]    Compiling enum_primitive v0.1.1
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling petgraph v0.4.13
[INFO] [stderr]    Compiling libflate v0.1.19
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling filetime v0.2.4
[INFO] [stderr]    Compiling rand_os v0.1.2
[INFO] [stderr]    Compiling xattr v0.2.2
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling tar v0.4.20
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling flate2 v1.0.6
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling parking_lot_core v0.2.14
[INFO] [stderr]    Compiling bzip2 v0.3.3
[INFO] [stderr]    Compiling zip v0.5.0
[INFO] [stderr]    Compiling parking_lot v0.4.8
[INFO] [stderr]    Compiling tree_magic v0.2.1
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling unrar v0.4.3
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `create_dir`
[INFO] [stdout]    --> src/main.rs:251:4
[INFO] [stdout]     |
[INFO] [stdout] 251 | fn create_dir(path: &str) -> io::Result<String> { // after moving this fn into a module, make this one private
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `path_digi_suffix` should have an upper case name
[INFO] [stdout]   --> src/main.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     static ref path_digi_suffix: Regex = Regex::new(r"_\((\d+)\)$").unwrap(); // to match a directory name: this_is_a_directory_(123)
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PATH_DIGI_SUFFIX`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 35s
[INFO] running `Command { std: "docker" "inspect" "0379e776ada8c6af1e0ac3c329b5aea855017c5fad191b68b1754a3bd4fb713a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0379e776ada8c6af1e0ac3c329b5aea855017c5fad191b68b1754a3bd4fb713a", kill_on_drop: false }`
[INFO] [stdout] 0379e776ada8c6af1e0ac3c329b5aea855017c5fad191b68b1754a3bd4fb713a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 60213947c27af6d3ec9c2892edae1442f0eab493a40947353632d2d583a0d1cf
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "60213947c27af6d3ec9c2892edae1442f0eab493a40947353632d2d583a0d1cf", kill_on_drop: false }`
[INFO] [stderr]    Compiling unwrap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function is never used: `create_dir`
[INFO] [stdout]    --> src/main.rs:251:4
[INFO] [stdout]     |
[INFO] [stdout] 251 | fn create_dir(path: &str) -> io::Result<String> { // after moving this fn into a module, make this one private
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `path_digi_suffix` should have an upper case name
[INFO] [stdout]   --> src/main.rs:35:16
[INFO] [stdout]    |
[INFO] [stdout] 35 |     static ref path_digi_suffix: Regex = Regex::new(r"_\((\d+)\)$").unwrap(); // to match a directory name: this_is_a_directory_(123)
[INFO] [stdout]    |                ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PATH_DIGI_SUFFIX`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.18s
[INFO] running `Command { std: "docker" "inspect" "60213947c27af6d3ec9c2892edae1442f0eab493a40947353632d2d583a0d1cf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "60213947c27af6d3ec9c2892edae1442f0eab493a40947353632d2d583a0d1cf", kill_on_drop: false }`
[INFO] [stdout] 60213947c27af6d3ec9c2892edae1442f0eab493a40947353632d2d583a0d1cf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0129e5eec57567b9ce0316a0cb770e5c8c42ecc5a3cc48789f88f87d0db77356
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "0129e5eec57567b9ce0316a0cb770e5c8c42ecc5a3cc48789f88f87d0db77356", kill_on_drop: false }`
[INFO] [stderr] warning: function is never used: `create_dir`
[INFO] [stderr]    --> src/main.rs:251:4
[INFO] [stderr]     |
[INFO] [stderr] 251 | fn create_dir(path: &str) -> io::Result<String> { // after moving this fn into a module, make this one private
[INFO] [stderr]     |    ^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `path_digi_suffix` should have an upper case name
[INFO] [stderr]   --> src/main.rs:35:16
[INFO] [stderr]    |
[INFO] [stderr] 35 |     static ref path_digi_suffix: Regex = Regex::new(r"_\((\d+)\)$").unwrap(); // to match a directory name: this_is_a_directory_(123)
[INFO] [stderr]    |                ^^^^^^^^^^^^^^^^ help: convert the identifier to upper case: `PATH_DIGI_SUFFIX`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/unwrap-0c37c67b58177cb8
[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 `Command { std: "docker" "inspect" "0129e5eec57567b9ce0316a0cb770e5c8c42ecc5a3cc48789f88f87d0db77356", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0129e5eec57567b9ce0316a0cb770e5c8c42ecc5a3cc48789f88f87d0db77356", kill_on_drop: false }`
[INFO] [stdout] 0129e5eec57567b9ce0316a0cb770e5c8c42ecc5a3cc48789f88f87d0db77356