[INFO] cloning repository https://github.com/DumbDogDiner/purr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/DumbDogDiner/purr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDumbDogDiner%2Fpurr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDumbDogDiner%2Fpurr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ba0e575a9538368829f06e97594c2b1885453e93
[INFO] testing DumbDogDiner/purr against 1.52.1 for beta-1.52-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDumbDogDiner%2Fpurr" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/DumbDogDiner/purr on toolchain 1.52.1
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/DumbDogDiner/purr
[INFO] finished tweaking git repo https://github.com/DumbDogDiner/purr
[INFO] tweaked toml for git repo https://github.com/DumbDogDiner/purr written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/DumbDogDiner/purr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.52.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 862787e47dae25de136406227c78b55f68cb0bf7af70301328f8029594fceda1
[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" "862787e47dae25de136406227c78b55f68cb0bf7af70301328f8029594fceda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "862787e47dae25de136406227c78b55f68cb0bf7af70301328f8029594fceda1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "862787e47dae25de136406227c78b55f68cb0bf7af70301328f8029594fceda1", kill_on_drop: false }`
[INFO] [stdout] 862787e47dae25de136406227c78b55f68cb0bf7af70301328f8029594fceda1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 80af3e26cc6d931ee6978f9fb515923d1a22043c2ce09d3bd3fb836c05f70c01
[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" "80af3e26cc6d931ee6978f9fb515923d1a22043c2ce09d3bd3fb836c05f70c01", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling crunchy v0.2.2
[INFO] [stderr]    Compiling getrandom v0.2.0
[INFO] [stderr]    Compiling tiny-keccak v2.0.2
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling openssl v0.10.31
[INFO] [stderr]    Compiling array-macro v1.0.5
[INFO] [stderr]    Compiling xi-unicode v0.2.1
[INFO] [stderr]    Compiling tokio v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling openssl-sys v0.9.59
[INFO] [stderr]    Compiling ncurses v5.99.0
[INFO] [stderr]    Compiling owning_ref v0.4.1
[INFO] [stderr]    Compiling http-body v0.4.0
[INFO] [stderr]    Compiling want v0.3.0
[INFO] [stderr]    Compiling num-complex v0.3.1
[INFO] [stderr]    Compiling serde-hjson v0.9.1
[INFO] [stderr]    Compiling num-rational v0.3.2
[INFO] [stderr]    Compiling native-tls v0.2.6
[INFO] [stderr]    Compiling num v0.3.1
[INFO] [stderr]    Compiling mio v0.7.7
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling signal-hook-registry v1.2.2
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling socket2 v0.3.17
[INFO] [stderr]    Compiling term_size v0.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling const-random-macro v0.1.13
[INFO] [stderr]    Compiling signal-hook v0.1.16
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling const-random v0.1.13
[INFO] [stderr]    Compiling ahash v0.4.7
[INFO] [stderr]    Compiling ahash v0.3.8
[INFO] [stderr]    Compiling tokio-stream v0.1.1
[INFO] [stderr]    Compiling tokio-native-tls v0.3.0
[INFO] [stderr]    Compiling darling_core v0.10.3
[INFO] [stderr]    Compiling tokio-util v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling enum-map-derive v0.4.6
[INFO] [stderr]    Compiling darling_macro v0.10.3
[INFO] [stderr]    Compiling enum-map v0.6.4
[INFO] [stderr]    Compiling darling v0.10.3
[INFO] [stderr]    Compiling enumset_derive v0.5.0
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling pin-project v0.4.27
[INFO] [stderr]    Compiling tracing-futures v0.2.4
[INFO] [stderr]    Compiling enumset v1.0.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling h2 v0.3.0
[INFO] [stderr]    Compiling hyper v0.14.2
[INFO] [stderr]    Compiling toml v0.5.7
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling serde_urlencoded v0.7.0
[INFO] [stderr]    Compiling cursive_core v0.1.1
[INFO] [stderr]    Compiling config v0.10.1
[INFO] [stderr]    Compiling hyper-tls v0.5.0
[INFO] [stderr]    Compiling reqwest v0.11.0
[INFO] [stderr]    Compiling cursive v0.15.0
[INFO] [stderr]    Compiling purr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs`, `io::Write`, `path::Path`
[INFO] [stdout]  --> src/cfg.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs, path::Path, sync::RwLock, io::Write};
[INFO] [stdout]   |           ^^  ^^^^^^^^^^                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_config`
[INFO] [stdout]  --> src/command/config.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn update_config() {}
[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 2m 58s
[INFO] running `Command { std: "docker" "inspect" "80af3e26cc6d931ee6978f9fb515923d1a22043c2ce09d3bd3fb836c05f70c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "80af3e26cc6d931ee6978f9fb515923d1a22043c2ce09d3bd3fb836c05f70c01", kill_on_drop: false }`
[INFO] [stdout] 80af3e26cc6d931ee6978f9fb515923d1a22043c2ce09d3bd3fb836c05f70c01
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 45a16258cf93c8dfaeae4db3b6405eeaf0902023804bb9c6bcbaede37b12e106
[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" "45a16258cf93c8dfaeae4db3b6405eeaf0902023804bb9c6bcbaede37b12e106", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling purr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused imports: `fs`, `io::Write`, `path::Path`
[INFO] [stdout]  --> src/cfg.rs:3:11
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::{fs, path::Path, sync::RwLock, io::Write};
[INFO] [stdout]   |           ^^  ^^^^^^^^^^                ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `update_config`
[INFO] [stdout]  --> src/command/config.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub fn update_config() {}
[INFO] [stdout]   |        ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.46s
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "45a16258cf93c8dfaeae4db3b6405eeaf0902023804bb9c6bcbaede37b12e106", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45a16258cf93c8dfaeae4db3b6405eeaf0902023804bb9c6bcbaede37b12e106", kill_on_drop: false }`
[INFO] [stdout] 45a16258cf93c8dfaeae4db3b6405eeaf0902023804bb9c6bcbaede37b12e106
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+1.52.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 43119ea057bf17e88477b47301a245ae3ed099cadc5405f85c8ce57e1efc1bea
[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" "43119ea057bf17e88477b47301a245ae3ed099cadc5405f85c8ce57e1efc1bea", kill_on_drop: false }`
[INFO] [stderr] warning: unused imports: `fs`, `io::Write`, `path::Path`
[INFO] [stderr]  --> src/cfg.rs:3:11
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::{fs, path::Path, sync::RwLock, io::Write};
[INFO] [stderr]   |           ^^  ^^^^^^^^^^                ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `update_config`
[INFO] [stderr]  --> src/command/config.rs:8:8
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub fn update_config() {}
[INFO] [stderr]   |        ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.23s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/purr-d128c4b642c4382d)
[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" "43119ea057bf17e88477b47301a245ae3ed099cadc5405f85c8ce57e1efc1bea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "43119ea057bf17e88477b47301a245ae3ed099cadc5405f85c8ce57e1efc1bea", kill_on_drop: false }`
[INFO] [stdout] 43119ea057bf17e88477b47301a245ae3ed099cadc5405f85c8ce57e1efc1bea