[INFO] fetching crate rust-dwm-status 0.5.0...
[INFO] testing rust-dwm-status-0.5.0 against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] extracting crate rust-dwm-status 0.5.0 into /workspace/builds/worker-87/source
[INFO] validating manifest of crates.io crate rust-dwm-status 0.5.0 on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rust-dwm-status 0.5.0
[INFO] finished tweaking crates.io crate rust-dwm-status 0.5.0
[INFO] tweaked toml for crates.io crate rust-dwm-status 0.5.0 written to /workspace/builds/worker-87/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "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-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0de46fd0f67fd7e9fa79d9e05ab1caeb21a3836306f1240e5feadba869a7bcef
[INFO] running `Command { std: "docker" "start" "-a" "0de46fd0f67fd7e9fa79d9e05ab1caeb21a3836306f1240e5feadba869a7bcef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0de46fd0f67fd7e9fa79d9e05ab1caeb21a3836306f1240e5feadba869a7bcef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0de46fd0f67fd7e9fa79d9e05ab1caeb21a3836306f1240e5feadba869a7bcef", kill_on_drop: false }`
[INFO] [stdout] 0de46fd0f67fd7e9fa79d9e05ab1caeb21a3836306f1240e5feadba869a7bcef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-87/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6690f0421e9d1e38433141740143f327d2f9671163faddf14ad9f9737f54aaa4
[INFO] running `Command { std: "docker" "start" "-a" "6690f0421e9d1e38433141740143f327d2f9671163faddf14ad9f9737f54aaa4", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.22
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling minimal-lexical v0.2.1
[INFO] [stderr]    Compiling bit-vec v0.4.4
[INFO] [stderr]    Compiling bytesize v1.1.0
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling nom v7.1.0
[INFO] [stderr]    Compiling time v0.1.44
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling bit-set v0.4.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling libdbus-sys v0.2.2
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling chan v0.1.23
[INFO] [stderr]    Compiling dbus v0.6.5
[INFO] [stderr]    Compiling chan-signal v0.2.0
[INFO] [stderr]    Compiling chrono v0.4.19
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling chrono v0.3.0
[INFO] [stderr]    Compiling systemstat v0.1.10
[INFO] [stderr]    Compiling notify-rust v3.6.3
[INFO] [stderr]    Compiling rust-dwm-status v0.5.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0369]: cannot subtract `ByteSize` from `ByteSize`
[INFO] [stdout]   --> src/main.rs:38:30
[INFO] [stdout]    |
[INFO] [stdout] 38 |         let used = mem.total - mem.free;
[INFO] [stdout]    |                    --------- ^ -------- ByteSize
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    ByteSize
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no function or associated item named `new` found for struct `NotificationServer` in the current scope
[INFO] [stdout]   --> src/main.rs:73:42
[INFO] [stdout]    |
[INFO] [stdout] 73 |     let mut server = NotificationServer::new();
[INFO] [stdout]    |                                          ^^^ function or associated item not found in `NotificationServer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0369, E0599.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0369`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-dwm-status` due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "6690f0421e9d1e38433141740143f327d2f9671163faddf14ad9f9737f54aaa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6690f0421e9d1e38433141740143f327d2f9671163faddf14ad9f9737f54aaa4", kill_on_drop: false }`
[INFO] [stdout] 6690f0421e9d1e38433141740143f327d2f9671163faddf14ad9f9737f54aaa4