[INFO] cloning repository https://github.com/danxexe/rust-wasm-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danxexe/rust-wasm-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanxexe%2Frust-wasm-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanxexe%2Frust-wasm-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 25c0863cdb6ec8fe777499720f87cb7907cf75bc
[INFO] checking danxexe/rust-wasm-demo/25c0863cdb6ec8fe777499720f87cb7907cf75bc against try#9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132 for pr-133274
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanxexe%2Frust-wasm-demo" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/danxexe/rust-wasm-demo on toolchain 9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/danxexe/rust-wasm-demo
[INFO] finished tweaking git repo https://github.com/danxexe/rust-wasm-demo
[INFO] tweaked toml for git repo https://github.com/danxexe/rust-wasm-demo written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/danxexe/rust-wasm-demo 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" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c9e45681f182e04297bda8ce46573f4c2701577e885df93e370f5321390e029
[INFO] running `Command { std: "docker" "start" "-a" "1c9e45681f182e04297bda8ce46573f4c2701577e885df93e370f5321390e029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c9e45681f182e04297bda8ce46573f4c2701577e885df93e370f5321390e029", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c9e45681f182e04297bda8ce46573f4c2701577e885df93e370f5321390e029", kill_on_drop: false }`
[INFO] [stdout] 1c9e45681f182e04297bda8ce46573f4c2701577e885df93e370f5321390e029
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 704f8510f3852f9e1ab43e8af6846815b26f24a82768d1cd66b74a5f71fad7a5
[INFO] running `Command { std: "docker" "start" "-a" "704f8510f3852f9e1ab43e8af6846815b26f24a82768d1cd66b74a5f71fad7a5", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-wasm-demo v0.1.0 (/opt/rustwide/workdir)
[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] [stdout] error[E0152]: found duplicate lang item `panic_impl`
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | / fn handle_panic(_: &core::panic::PanicInfo) -> ! {
[INFO] [stdout] 5 | |     loop {}
[INFO] [stdout] 6 | | }
[INFO] [stdout]   | |_^
[INFO] [stdout]   |
[INFO] [stdout]   = note: the lang item is first defined in crate `std` (which `test` depends on)
[INFO] [stdout]   = note: first definition in `std` loaded from /opt/rustwide/rustup-home/toolchains/9a6ce9bcee4fff9f2010ea88aaa7654cc4d95132/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-81d925df099611ec.rlib
[INFO] [stdout]   = note: second definition in the local crate (`rust_wasm_demo`)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0152`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-wasm-demo` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `rust-wasm-demo` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "704f8510f3852f9e1ab43e8af6846815b26f24a82768d1cd66b74a5f71fad7a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "704f8510f3852f9e1ab43e8af6846815b26f24a82768d1cd66b74a5f71fad7a5", kill_on_drop: false }`
[INFO] [stdout] 704f8510f3852f9e1ab43e8af6846815b26f24a82768d1cd66b74a5f71fad7a5