[INFO] fetching crate kill-desktop 0.3.4...
[INFO] testing kill-desktop-0.3.4 against master#6c20ab744b0f82646d90ce9d25894823abc9c669 for pr-99093
[INFO] extracting crate kill-desktop 0.3.4 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate kill-desktop 0.3.4 on toolchain 6c20ab744b0f82646d90ce9d25894823abc9c669
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate kill-desktop 0.3.4
[INFO] finished tweaking crates.io crate kill-desktop 0.3.4
[INFO] tweaked toml for crates.io crate kill-desktop 0.3.4 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate kill-desktop 0.3.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded terminal_size v0.1.10
[INFO] [stderr]   Downloaded syn v1.0.15
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 420f3419c786b1253a4d849ad15f53779725e4611958656599260180770d12e0
[INFO] running `Command { std: "docker" "start" "-a" "420f3419c786b1253a4d849ad15f53779725e4611958656599260180770d12e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "420f3419c786b1253a4d849ad15f53779725e4611958656599260180770d12e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "420f3419c786b1253a4d849ad15f53779725e4611958656599260180770d12e0", kill_on_drop: false }`
[INFO] [stdout] 420f3419c786b1253a4d849ad15f53779725e4611958656599260180770d12e0
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e95269dfdcaa64ea2673d067db38714dcf4eef39b256c9dd302b542eaf5dbf97
[INFO] running `Command { std: "docker" "start" "-a" "e95269dfdcaa64ea2673d067db38714dcf4eef39b256c9dd302b542eaf5dbf97", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.67
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling proc-macro2 v1.0.8
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling syn v1.0.15
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling regex-syntax v0.6.14
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-width v0.1.7
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling aho-corasick v0.7.8
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling dirs-sys v0.3.4
[INFO] [stderr]    Compiling terminal_size v0.1.10
[INFO] [stderr]    Compiling dirs v2.0.2
[INFO] [stderr]    Compiling xcb v0.9.0
[INFO] [stderr]    Compiling regex v1.3.4
[INFO] [stderr]    Compiling backtrace v0.3.44
[INFO] [stderr]    Compiling failure v0.1.6
[INFO] [stderr]    Compiling serde_derive v1.0.104
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling kill-desktop v0.3.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `window` and `exe` are never read
[INFO] [stdout]   --> src/main.rs:33:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct PidInfo {
[INFO] [stdout]    |        ------- fields in this struct
[INFO] [stdout] 33 |     window: Vec<WindowInfo>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 34 |     exe: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout]    = note: `PidInfo` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.06s
[INFO] running `Command { std: "docker" "inspect" "e95269dfdcaa64ea2673d067db38714dcf4eef39b256c9dd302b542eaf5dbf97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e95269dfdcaa64ea2673d067db38714dcf4eef39b256c9dd302b542eaf5dbf97", kill_on_drop: false }`
[INFO] [stdout] e95269dfdcaa64ea2673d067db38714dcf4eef39b256c9dd302b542eaf5dbf97
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5873ed620acfc3295992aedd9294443d62a478a48ba243bc5e6c4f5abaffa05f" "/opt/rustwide/cargo-home/bin/cargo" "+6c20ab744b0f82646d90ce9d25894823abc9c669" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a738d792fe750f90bcef08e54754e9f625f6321791bb742d5dba4b9efa94780e
[INFO] running `Command { std: "docker" "start" "-a" "a738d792fe750f90bcef08e54754e9f625f6321791bb742d5dba4b9efa94780e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] running `Command { std: "docker" "inspect" "a738d792fe750f90bcef08e54754e9f625f6321791bb742d5dba4b9efa94780e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a738d792fe750f90bcef08e54754e9f625f6321791bb742d5dba4b9efa94780e", kill_on_drop: false }`
[INFO] [stdout] a738d792fe750f90bcef08e54754e9f625f6321791bb742d5dba4b9efa94780e