[INFO] cloning repository https://github.com/konstajurvanen/BareMetalRust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/konstajurvanen/BareMetalRust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonstajurvanen%2FBareMetalRust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonstajurvanen%2FBareMetalRust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1ff9d57a655506c252909bf5d4d2fe5fa9fe742e
[INFO] checking konstajurvanen/BareMetalRust against try#6db1a6a7ebb2ad243051f3ff949f987dd70cde2b+rustflags=-Dreturn-local-variable-ptr for pr-134218
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkonstajurvanen%2FBareMetalRust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/konstajurvanen/BareMetalRust on toolchain 6db1a6a7ebb2ad243051f3ff949f987dd70cde2b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/konstajurvanen/BareMetalRust
[INFO] finished tweaking git repo https://github.com/konstajurvanen/BareMetalRust
[INFO] tweaked toml for git repo https://github.com/konstajurvanen/BareMetalRust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/konstajurvanen/BareMetalRust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded riscv-rt-macros v0.1.6
[INFO] [stderr]   Downloaded riscv-rt v0.8.0
[INFO] [stderr]   Downloaded embedded-hal v0.2.6
[INFO] [stderr]   Downloaded riscv v0.6.0
[INFO] [stderr]   Downloaded micromath v1.1.1
[INFO] [stderr]   Downloaded gd32vf103-pac v0.4.0
[INFO] [stderr]   Downloaded embedded-graphics-core v0.3.3
[INFO] [stderr]   Downloaded embedded-graphics v0.7.1
[INFO] [stderr]   Downloaded st7735-lcd v0.8.1
[INFO] [stderr]   Downloaded gd32vf103xx-hal v0.5.0
[INFO] [stderr]   Downloaded az v1.1.2
[INFO] [stderr]   Downloaded longan-nano v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 84482dd26831da3cca5fe88665e847a2f26bde8bfdb146145ef96512d5f0d9d3
[INFO] running `Command { std: "docker" "start" "-a" "84482dd26831da3cca5fe88665e847a2f26bde8bfdb146145ef96512d5f0d9d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "84482dd26831da3cca5fe88665e847a2f26bde8bfdb146145ef96512d5f0d9d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84482dd26831da3cca5fe88665e847a2f26bde8bfdb146145ef96512d5f0d9d3", kill_on_drop: false }`
[INFO] [stdout] 84482dd26831da3cca5fe88665e847a2f26bde8bfdb146145ef96512d5f0d9d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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 -Dreturn-local-variable-ptr" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+6db1a6a7ebb2ad243051f3ff949f987dd70cde2b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e551de6441df0e11307e17742e9dd14fa1ac22802e715804fb1ec0bdbe69311b
[INFO] running `Command { std: "docker" "start" "-a" "e551de6441df0e11307e17742e9dd14fa1ac22802e715804fb1ec0bdbe69311b", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling semver v1.0.4
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]     Checking bit_field v0.10.1
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling az v1.1.2
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]     Checking nb v1.0.0
[INFO] [stderr]     Checking nb v0.1.3
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling rustc_version v0.4.0
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]    Compiling bare-metal v0.2.5
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking float-cmp v0.8.0
[INFO] [stderr]    Compiling cast v0.2.7
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking embedded-hal v0.2.6
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking micromath v1.1.1
[INFO] [stderr]    Compiling gd32vf103xx-hal v0.5.0
[INFO] [stderr]     Checking vcell v0.1.3
[INFO] [stderr]     Checking embedded-dma v0.1.2
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling longan-nano v0.3.0
[INFO] [stderr]     Checking r0 v1.0.0
[INFO] [stderr]     Checking bare-metal v1.0.0
[INFO] [stderr]     Checking panic-halt v0.2.0
[INFO] [stderr]     Checking embedded-graphics-core v0.3.3
[INFO] [stderr]     Checking embedded-graphics v0.7.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling riscv-target v0.1.2
[INFO] [stderr]     Checking st7735-lcd v0.8.1
[INFO] [stderr]    Compiling riscv v0.6.0
[INFO] [stderr]    Compiling riscv-rt v0.8.0
[INFO] [stderr]    Compiling riscv v0.7.0
[INFO] [stderr]     Checking gd32vf103-pac v0.4.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.1.6
[INFO] [stderr]     Checking challenge3 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0152]: duplicate lang item in crate `std` (which `test` depends on): `panic_impl`
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `panic_halt` (which `challenge3` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-fcdff5abd5498cc1.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/6db1a6a7ebb2ad243051f3ff949f987dd70cde2b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-ea2006fbcbea27b7.rlib
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `challenge3` (bin "challenge3" test) due to 1 previous error
[INFO] [stdout] error: unwinding panics are not supported without std
[INFO] [stdout]   |
[INFO] [stdout]   = help: using nightly cargo, use -Zbuild-std with panic="abort" to avoid unwinding
[INFO] [stdout]   = note: since the core library is usually precompiled with panic="unwind", rebuilding your crate with panic="abort" may not be enough to fix the problem
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `challenge3` (bin "challenge3") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e551de6441df0e11307e17742e9dd14fa1ac22802e715804fb1ec0bdbe69311b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e551de6441df0e11307e17742e9dd14fa1ac22802e715804fb1ec0bdbe69311b", kill_on_drop: false }`
[INFO] [stdout] e551de6441df0e11307e17742e9dd14fa1ac22802e715804fb1ec0bdbe69311b