[INFO] cloning repository https://github.com/Katrubs/purr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Katrubs/purr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKatrubs%2Fpurr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKatrubs%2Fpurr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 43d18c6e65284184c20555713541acab23dbf642
[INFO] testing Katrubs/purr against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKatrubs%2Fpurr" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Katrubs/purr on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Katrubs/purr
[INFO] finished tweaking git repo https://github.com/Katrubs/purr
[INFO] tweaked toml for git repo https://github.com/Katrubs/purr written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/Katrubs/purr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 646230df9437f0ed7bd9a02b4901c503cb890f53f96ad5b28e24dccb99495bec
[INFO] running `Command { std: "docker" "start" "-a" "646230df9437f0ed7bd9a02b4901c503cb890f53f96ad5b28e24dccb99495bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "646230df9437f0ed7bd9a02b4901c503cb890f53f96ad5b28e24dccb99495bec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "646230df9437f0ed7bd9a02b4901c503cb890f53f96ad5b28e24dccb99495bec", kill_on_drop: false }`
[INFO] [stdout] 646230df9437f0ed7bd9a02b4901c503cb890f53f96ad5b28e24dccb99495bec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 76550c7360b4b7b7813fe185a809cc10fc826d02c0b06ea620837962c46e49f2
[INFO] running `Command { std: "docker" "start" "-a" "76550c7360b4b7b7813fe185a809cc10fc826d02c0b06ea620837962c46e49f2", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling curl v0.4.38
[INFO] [stderr]    Compiling itoa v0.4.8
[INFO] [stderr]    Compiling symlink v0.1.0
[INFO] [stderr]    Compiling dirs-sys v0.3.6
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling libz-sys v1.1.3
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.6+1.43.0
[INFO] [stderr]    Compiling libssh2-sys v0.2.21
[INFO] [stderr]    Compiling curl-sys v0.4.45+curl-7.78.0
[INFO] [stderr]    Compiling libgit2-sys v0.12.22+1.1.0
[INFO] [stderr]    Compiling env_logger v0.9.0
[INFO] [stderr]    Compiling directories v3.0.2
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling git2 v0.13.21
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling serde_ignored v0.1.2
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling purr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/purr/util/file.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::{path::Path,fs::OpenOptions,io::{Write,Read}};
[INFO] [stdout]    |                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_file_from_std_path_path`
[INFO] [stdout]   --> src/purr/util/file.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn open_file_from_std_path_path(path: &Path) -> Result<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 54.09s
[INFO] running `Command { std: "docker" "inspect" "76550c7360b4b7b7813fe185a809cc10fc826d02c0b06ea620837962c46e49f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "76550c7360b4b7b7813fe185a809cc10fc826d02c0b06ea620837962c46e49f2", kill_on_drop: false }`
[INFO] [stdout] 76550c7360b4b7b7813fe185a809cc10fc826d02c0b06ea620837962c46e49f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ce08e8c3f3de9ca537dba62ea12fc7f63dd6a53d526908b4c817843ad78e4cb
[INFO] running `Command { std: "docker" "start" "-a" "1ce08e8c3f3de9ca537dba62ea12fc7f63dd6a53d526908b4c817843ad78e4cb", kill_on_drop: false }`
[INFO] [stderr]    Compiling purr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `Write`
[INFO] [stdout]   --> src/purr/util/file.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 | use std::{path::Path,fs::OpenOptions,io::{Write,Read}};
[INFO] [stdout]    |                                           ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `open_file_from_std_path_path`
[INFO] [stdout]   --> src/purr/util/file.rs:24:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | pub fn open_file_from_std_path_path(path: &Path) -> Result<String> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` 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 1.32s
[INFO] running `Command { std: "docker" "inspect" "1ce08e8c3f3de9ca537dba62ea12fc7f63dd6a53d526908b4c817843ad78e4cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce08e8c3f3de9ca537dba62ea12fc7f63dd6a53d526908b4c817843ad78e4cb", kill_on_drop: false }`
[INFO] [stdout] 1ce08e8c3f3de9ca537dba62ea12fc7f63dd6a53d526908b4c817843ad78e4cb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6e03e7405d2d74ecafa6da93fd6e2b46a2a50e0c2c82eccd16bd093a4a3f1ad6
[INFO] running `Command { std: "docker" "start" "-a" "6e03e7405d2d74ecafa6da93fd6e2b46a2a50e0c2c82eccd16bd093a4a3f1ad6", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `Write`
[INFO] [stderr]   --> src/purr/util/file.rs:18:43
[INFO] [stderr]    |
[INFO] [stderr] 18 | use std::{path::Path,fs::OpenOptions,io::{Write,Read}};
[INFO] [stderr]    |                                           ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `open_file_from_std_path_path`
[INFO] [stderr]   --> src/purr/util/file.rs:24:8
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub fn open_file_from_std_path_path(path: &Path) -> Result<String> {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `purr` (bin "purr" test) generated 2 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.13s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/purr-145c5a110b0bca43)
[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" "6e03e7405d2d74ecafa6da93fd6e2b46a2a50e0c2c82eccd16bd093a4a3f1ad6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e03e7405d2d74ecafa6da93fd6e2b46a2a50e0c2c82eccd16bd093a4a3f1ad6", kill_on_drop: false }`
[INFO] [stdout] 6e03e7405d2d74ecafa6da93fd6e2b46a2a50e0c2c82eccd16bd093a4a3f1ad6