[INFO] cloning repository https://github.com/xurtis/screencap
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/xurtis/screencap" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxurtis%2Fscreencap", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxurtis%2Fscreencap'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9fbd25bb9f6c1879fb311df1b016a31ba65ba4a9
[INFO] testing xurtis/screencap against 1.55.0 for beta-1.56-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fxurtis%2Fscreencap" "/workspace/builds/worker-51/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-51/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/xurtis/screencap 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/xurtis/screencap
[INFO] finished tweaking git repo https://github.com/xurtis/screencap
[INFO] tweaked toml for git repo https://github.com/xurtis/screencap written to /workspace/builds/worker-51/source/Cargo.toml
[INFO] crate git repo https://github.com/xurtis/screencap 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 8a57fd71c092a5874644cee14c3780d12cff86398ec92251d4f8217d643f052b
[INFO] running `Command { std: "docker" "start" "-a" "8a57fd71c092a5874644cee14c3780d12cff86398ec92251d4f8217d643f052b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8a57fd71c092a5874644cee14c3780d12cff86398ec92251d4f8217d643f052b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a57fd71c092a5874644cee14c3780d12cff86398ec92251d4f8217d643f052b", kill_on_drop: false }`
[INFO] [stdout] 8a57fd71c092a5874644cee14c3780d12cff86398ec92251d4f8217d643f052b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] f301321dfe3791a3c7935551df5123105b5531ac77470537ffa9c0fb36f971a5
[INFO] running `Command { std: "docker" "start" "-a" "f301321dfe3791a3c7935551df5123105b5531ac77470537ffa9c0fb36f971a5", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libc v0.2.46
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling unicode-width v0.1.5
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.7.0
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling textwrap v0.10.0
[INFO] [stderr]    Compiling time v0.1.41
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling num_cpus v1.9.0
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling clap v2.32.0
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling screencap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/util.rs:14:17
[INFO] [stdout]     |
[INFO] [stdout] 14  |         exec!(@(&mut command) $($args)*);
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/main.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let lines = command_output(exec!(xdpyinfo));
[INFO] [stdout]     |                                --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `exec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.96s
[INFO] running `Command { std: "docker" "inspect" "f301321dfe3791a3c7935551df5123105b5531ac77470537ffa9c0fb36f971a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f301321dfe3791a3c7935551df5123105b5531ac77470537ffa9c0fb36f971a5", kill_on_drop: false }`
[INFO] [stdout] f301321dfe3791a3c7935551df5123105b5531ac77470537ffa9c0fb36f971a5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 5615eabb310195ba532138ba8ac0e8b4d26a04fbe83d2c551532a10344ed8855
[INFO] running `Command { std: "docker" "start" "-a" "5615eabb310195ba532138ba8ac0e8b4d26a04fbe83d2c551532a10344ed8855", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling screencap v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/util.rs:14:17
[INFO] [stdout]     |
[INFO] [stdout] 14  |         exec!(@(&mut command) $($args)*);
[INFO] [stdout]     |                 ^^^^^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/main.rs:112:32
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let lines = command_output(exec!(xdpyinfo));
[INFO] [stdout]     |                                --------------- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this warning originates in the macro `exec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.01s
[INFO] running `Command { std: "docker" "inspect" "5615eabb310195ba532138ba8ac0e8b4d26a04fbe83d2c551532a10344ed8855", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5615eabb310195ba532138ba8ac0e8b4d26a04fbe83d2c551532a10344ed8855", kill_on_drop: false }`
[INFO] [stdout] 5615eabb310195ba532138ba8ac0e8b4d26a04fbe83d2c551532a10344ed8855
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-51/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] 004c5302322cbdb427242061419039cd52da08be52d2e43e1039c2d9894020c4
[INFO] running `Command { std: "docker" "start" "-a" "004c5302322cbdb427242061419039cd52da08be52d2e43e1039c2d9894020c4", kill_on_drop: false }`
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/util.rs:14:17
[INFO] [stderr]     |
[INFO] [stderr] 14  |         exec!(@(&mut command) $($args)*);
[INFO] [stderr]     |                 ^^^^^^^^^^^^
[INFO] [stderr]     | 
[INFO] [stderr]    ::: src/main.rs:112:32
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let lines = command_output(exec!(xdpyinfo));
[INFO] [stderr]     |                                --------------- in this macro invocation
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this warning originates in the macro `exec` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: `screencap` (bin "screencap" test) generated 1 warning
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/screencap-3dad382e69d68496)
[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" "004c5302322cbdb427242061419039cd52da08be52d2e43e1039c2d9894020c4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "004c5302322cbdb427242061419039cd52da08be52d2e43e1039c2d9894020c4", kill_on_drop: false }`
[INFO] [stdout] 004c5302322cbdb427242061419039cd52da08be52d2e43e1039c2d9894020c4