[INFO] cloning repository https://github.com/HoNile/stool
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HoNile/stool" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoNile%2Fstool"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoNile%2Fstool'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c32d2a003427db91fe47386498d75c0ef01a3415
[INFO] checking HoNile/stool against master#d939f708d960161d23b964309ba68ff207fc0ead for pr-70087
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHoNile%2Fstool" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/HoNile/stool on toolchain d939f708d960161d23b964309ba68ff207fc0ead
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/HoNile/stool
[INFO] finished tweaking git repo https://github.com/HoNile/stool
[INFO] tweaked toml for git repo https://github.com/HoNile/stool written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/HoNile/stool already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+d939f708d960161d23b964309ba68ff207fc0ead" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f1a459f834de2c422b2c20dcf6d6638546083d6f83dcb33c23c468b9bd3032dd
[INFO] running `"docker" "start" "-a" "f1a459f834de2c422b2c20dcf6d6638546083d6f83dcb33c23c468b9bd3032dd"`
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling cairo-rs v0.8.1
[INFO] [stderr]    Compiling gio v0.8.1
[INFO] [stderr]    Compiling gdk v0.12.1
[INFO] [stderr]    Compiling gtk v0.8.1
[INFO] [stderr]     Checking unic-langid-impl v0.7.2
[INFO] [stderr]     Checking piet v0.0.9
[INFO] [stderr]     Checking simple_logger v1.6.0
[INFO] [stderr]    Compiling rustversion v1.0.2
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling druid-derive v0.2.0 (https://github.com/xi-editor/druid.git#0f362a0c)
[INFO] [stderr]    Compiling futures-macro v0.3.4
[INFO] [stderr]    Compiling time-macros-impl v0.1.0
[INFO] [stderr]     Checking unic-langid v0.7.1
[INFO] [stderr]     Checking fluent-langneg v0.11.1
[INFO] [stderr]     Checking intl_pluralrules v5.0.2
[INFO] [stderr]    Compiling time v0.2.9
[INFO] [stderr]     Checking time-macros v0.1.0
[INFO] [stderr]     Checking glib-sys v0.9.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.33
[INFO] [stderr]     Checking libudev-sys v0.1.4
[INFO] [stderr]     Checking backtrace-sys v0.1.34
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking nix v0.17.0
[INFO] [stderr]     Checking backtrace v0.3.45
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking futures-util v0.3.4
[INFO] [stderr]     Checking mio v0.6.21
[INFO] [stderr]     Checking gobject-sys v0.9.1
[INFO] [stderr]     Checking cairo-sys-rs v0.9.2
[INFO] [stderr]     Checking failure v0.1.7
[INFO] [stderr]     Checking gio-sys v0.9.1
[INFO] [stderr]     Checking pango-sys v0.9.1
[INFO] [stderr]     Checking atk-sys v0.9.1
[INFO] [stderr]     Checking fluent-bundle v0.9.1
[INFO] [stderr]     Checking tokio v0.2.13
[INFO] [stderr]     Checking gdk-pixbuf-sys v0.9.1
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking gdk-sys v0.9.1
[INFO] [stderr]     Checking futures-executor v0.3.4
[INFO] [stderr]     Checking gtk-sys v0.9.2
[INFO] [stderr]     Checking glib v0.9.3
[INFO] [stderr]     Checking futures v0.3.4
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking mio-serial v3.3.1
[INFO] [stderr]     Checking tokio-serial v4.3.3
[INFO] [stderr]     Checking pango v0.8.0
[INFO] [stderr]     Checking atk v0.8.0
[INFO] [stderr]     Checking piet-cairo v0.0.9
[INFO] [stderr]     Checking piet-common v0.0.9
[INFO] [stderr]     Checking gdk-pixbuf v0.8.0
[INFO] [stderr]     Checking druid-shell v0.5.0 (https://github.com/xi-editor/druid.git#0f362a0c)
[INFO] [stderr]     Checking druid v0.5.0 (https://github.com/xi-editor/druid.git#0f362a0c)
[INFO] [stderr]     Checking stool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: value assigned to `is_open` is never read
[INFO] [stderr]   --> src/async_serial.rs:65:25
[INFO] [stderr]    |
[INFO] [stderr] 65 |                         is_open = true;
[INFO] [stderr]    |                         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_open` is never read
[INFO] [stderr]   --> src/async_serial.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     is_open = false;
[INFO] [stderr]    |                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_open` is never read
[INFO] [stderr]   --> src/async_serial.rs:65:25
[INFO] [stderr]    |
[INFO] [stderr] 65 |                         is_open = true;
[INFO] [stderr]    |                         ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `is_open` is never read
[INFO] [stderr]   --> src/async_serial.rs:72:21
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     is_open = false;
[INFO] [stderr]    |                     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 39s
[INFO] running `"docker" "inspect" "f1a459f834de2c422b2c20dcf6d6638546083d6f83dcb33c23c468b9bd3032dd"`
[INFO] running `"docker" "rm" "-f" "f1a459f834de2c422b2c20dcf6d6638546083d6f83dcb33c23c468b9bd3032dd"`
[INFO] [stdout] f1a459f834de2c422b2c20dcf6d6638546083d6f83dcb33c23c468b9bd3032dd