[INFO] cloning repository https://github.com/tarkah/metro_m4_playground
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/tarkah/metro_m4_playground" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fmetro_m4_playground", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fmetro_m4_playground'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ef0d6b9383035bf8a68c2ef2c92a0d0457bc0a36
[INFO] checking tarkah/metro_m4_playground against try#b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8 for pr-78363
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftarkah%2Fmetro_m4_playground" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/tarkah/metro_m4_playground on toolchain b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-5/source/.cargo/config
[INFO] started tweaking git repo https://github.com/tarkah/metro_m4_playground
[INFO] removed path dependency metro_m4 from git repo https://github.com/tarkah/metro_m4_playground
[INFO] finished tweaking git repo https://github.com/tarkah/metro_m4_playground
[INFO] tweaked toml for git repo https://github.com/tarkah/metro_m4_playground written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/tarkah/metro_m4_playground already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (metro_m4) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr] error: the lock file /workspace/builds/worker-5/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "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" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (metro_m4) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded usb-device v0.2.7
[INFO] [stderr]   Downloaded atsamd-hal v0.10.1
[INFO] [stderr]   Downloaded atsamd51j v0.8.0
[INFO] [stderr]   Downloaded usbd-serial v0.1.1
[INFO] [stderr]   Downloaded metro_m4 v0.6.1
[INFO] [stderr]   Downloaded adafruit-alphanum4 v0.1.2
[INFO] [stderr]   Downloaded ht16k33 v0.4.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] da35ac73f1123b445b57532ddd084203214adedeb523dd1628c864031b254fd2
[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" "da35ac73f1123b445b57532ddd084203214adedeb523dd1628c864031b254fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "da35ac73f1123b445b57532ddd084203214adedeb523dd1628c864031b254fd2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "da35ac73f1123b445b57532ddd084203214adedeb523dd1628c864031b254fd2", kill_on_drop: false }`
[INFO] [stdout] da35ac73f1123b445b57532ddd084203214adedeb523dd1628c864031b254fd2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+b2c2190fa7bf856bb0ed5e8806266e3a2135c6f8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f8a13de7d3fab3af5de8a38b8b02d0777e53eda6b471031695b4c265716d2ef9
[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" "f8a13de7d3fab3af5de8a38b8b02d0777e53eda6b471031695b4c265716d2ef9", kill_on_drop: false }`
[INFO] [stderr] warning: dependency (metro_m4) specified without providing a local path, Git repository, or version to use. This will be considered an error in future versions
[INFO] [stderr]    Compiling cortex-m v0.6.4
[INFO] [stderr]    Compiling syn v1.0.48
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling atsamd51j v0.8.0
[INFO] [stderr]     Checking usb-device v0.2.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling metro_m4 v0.6.1
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]     Checking embedded-hal v0.2.4
[INFO] [stderr]     Checking usbd-serial v0.1.1
[INFO] [stderr]     Checking as-slice v0.1.4
[INFO] [stderr]    Compiling paste-impl v0.1.18
[INFO] [stderr]     Checking aligned v0.3.4
[INFO] [stderr]     Checking paste v0.1.18
[INFO] [stderr]    Compiling cortex-m-rt-macros v0.1.8
[INFO] [stderr]     Checking cortex-m-rt v0.6.13
[INFO] [stderr]     Checking atsamd-hal v0.10.1
[INFO] [stderr]     Checking metro_m4_ext v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `metro_m4 as hal`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use metro_m4 as hal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `metro_m4 as hal`
[INFO] [stdout]  --> src/lib.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use metro_m4 as hal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `hal_ext::serial_print`, `hal_ext::usb_serial`
[INFO] [stdout]   --> examples/serial.rs:12:15
[INFO] [stdout]    |
[INFO] [stdout] 12 | use hal_ext::{serial_print, usb_serial};
[INFO] [stdout]    |               ^^^^^^^^^^^^  ^^^^^^^^^^ no `usb_serial` in the root
[INFO] [stdout]    |               |
[INFO] [stdout]    |               no `serial_print` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved imports `hal_ext::alphanum`, `hal_ext::serial_print`, `hal_ext::usb_serial`
[INFO] [stdout]   --> examples/alphanum.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     alphanum::{Display, MultiDisplay, DISP_I2C_ADDR},
[INFO] [stdout]    |     ^^^^^^^^ could not find `alphanum` in `hal_ext`
[INFO] [stdout] 14 |     serial_print, usb_serial,
[INFO] [stdout]    |     ^^^^^^^^^^^^  ^^^^^^^^^^ no `usb_serial` in the root
[INFO] [stdout]    |     |
[INFO] [stdout]    |     no `serial_print` in the root
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `ht16k33`
[INFO] [stdout]   --> examples/alphanum.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | use ht16k33::HT16K33;
[INFO] [stdout]    |     ^^^^^^^ use of undeclared crate or module `ht16k33`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `serial_print`
[INFO] [stdout]   --> examples/alphanum.rs:61:9
[INFO] [stdout]    |
[INFO] [stdout] 61 |         serial_print!("Displaying text\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: cannot determine resolution for the macro `serial_print`
[INFO] [stdout]   --> examples/serial.rs:42:9
[INFO] [stdout]    |
[INFO] [stdout] 42 |         serial_print!("TEST\n");
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: import resolution is stuck, try simplifying macro imports
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: language item required, but not found: `eh_personality`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `metro_m4_ext`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f8a13de7d3fab3af5de8a38b8b02d0777e53eda6b471031695b4c265716d2ef9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8a13de7d3fab3af5de8a38b8b02d0777e53eda6b471031695b4c265716d2ef9", kill_on_drop: false }`
[INFO] [stdout] f8a13de7d3fab3af5de8a38b8b02d0777e53eda6b471031695b4c265716d2ef9