[INFO] cloning repository https://github.com/imrank03/riscv_semi
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/imrank03/riscv_semi" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimrank03%2Friscv_semi", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimrank03%2Friscv_semi'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 70384474278d3f8f4f8a0e88b6a579809b7ddd6a
[INFO] checking imrank03/riscv_semi against master#43ca9d18e333797f0aa3b525501a7cec8d61a96b for pr-136764
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fimrank03%2Friscv_semi" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/imrank03/riscv_semi on toolchain 43ca9d18e333797f0aa3b525501a7cec8d61a96b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+43ca9d18e333797f0aa3b525501a7cec8d61a96b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-7-tc1/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/imrank03/riscv_semi
[INFO] finished tweaking git repo https://github.com/imrank03/riscv_semi
[INFO] tweaked toml for git repo https://github.com/imrank03/riscv_semi written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/imrank03/riscv_semi 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" "+43ca9d18e333797f0aa3b525501a7cec8d61a96b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/rust-embedded/riscv`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded panic-halt v1.0.0
[INFO] [stderr]   Downloaded riscv-semihosting v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+43ca9d18e333797f0aa3b525501a7cec8d61a96b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebc21d1acb37a91fef9407ed78963e9e92176aab4425ec06853073b3aa096e10
[INFO] running `Command { std: "docker" "start" "-a" "ebc21d1acb37a91fef9407ed78963e9e92176aab4425ec06853073b3aa096e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebc21d1acb37a91fef9407ed78963e9e92176aab4425ec06853073b3aa096e10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc21d1acb37a91fef9407ed78963e9e92176aab4425ec06853073b3aa096e10", kill_on_drop: false }`
[INFO] [stdout] ebc21d1acb37a91fef9407ed78963e9e92176aab4425ec06853073b3aa096e10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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" "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@sha256:3959728d45483eb673ba100a951a6b9f5012970368db2a9e08e0ac9b67c8a5ad" "/opt/rustwide/cargo-home/bin/cargo" "+43ca9d18e333797f0aa3b525501a7cec8d61a96b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f7fb60e06fd7c29d5d908920c252141e09fcc5d57b6b1813ea430eaf85fc2eaf
[INFO] running `Command { std: "docker" "start" "-a" "f7fb60e06fd7c29d5d908920c252141e09fcc5d57b6b1813ea430eaf85fc2eaf", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.93
[INFO] [stderr]    Compiling unicode-ident v1.0.16
[INFO] [stderr]    Compiling paste v1.0.15
[INFO] [stderr]     Checking critical-section v1.2.0
[INFO] [stderr]     Checking embedded-hal v1.0.0
[INFO] [stderr]    Compiling riscv v0.12.0 (https://github.com/rust-embedded/riscv?branch=rvrt-patch#f16c833d)
[INFO] [stderr]    Compiling riscv v0.12.1
[INFO] [stderr]     Checking riscv-pac v0.2.0 (https://github.com/rust-embedded/riscv?branch=rvrt-patch#f16c833d)
[INFO] [stderr]    Compiling riscv-semihosting v0.1.2
[INFO] [stderr]    Compiling riscv-rt v0.13.0 (https://github.com/rust-embedded/riscv?branch=rvrt-patch#f16c833d)
[INFO] [stderr]     Checking riscv-pac v0.2.0
[INFO] [stderr]     Checking panic-halt v1.0.0
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.96
[INFO] [stderr]    Compiling riscv-macros v0.1.0 (https://github.com/rust-embedded/riscv?branch=rvrt-patch#f16c833d)
[INFO] [stderr]    Compiling riscv-macros v0.1.0
[INFO] [stderr]    Compiling riscv-rt-macros v0.2.2 (https://github.com/rust-embedded/riscv?branch=rvrt-patch#f16c833d)
[INFO] [stderr]     Checking riscv_semi 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 `riscv_semi` depends on)
[INFO] [stdout]   = note: first definition in `panic_halt` loaded from /opt/rustwide/target/debug/deps/libpanic_halt-22485f6879fd0020.rmeta
[INFO] [stdout]   = note: second definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/43ca9d18e333797f0aa3b525501a7cec8d61a96b/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-399a850a7013db0c.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 `riscv_semi` (bin "riscv_semi" test) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[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] error: could not compile `riscv_semi` (bin "riscv_semi") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "f7fb60e06fd7c29d5d908920c252141e09fcc5d57b6b1813ea430eaf85fc2eaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7fb60e06fd7c29d5d908920c252141e09fcc5d57b6b1813ea430eaf85fc2eaf", kill_on_drop: false }`
[INFO] [stdout] f7fb60e06fd7c29d5d908920c252141e09fcc5d57b6b1813ea430eaf85fc2eaf