[INFO] fetching crate mango-test 0.2.1...
[INFO] testing mango-test-0.2.1 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-8
[INFO] extracting crate mango-test 0.2.1 into /workspace/builds/worker-5-tc1/source
[INFO] started tweaking crates.io crate mango-test 0.2.1
[INFO] finished tweaking crates.io crate mango-test 0.2.1
[INFO] tweaked toml for crates.io crate mango-test 0.2.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate mango-test 0.2.1 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mango-core v0.2.1
[INFO] [stderr]   Downloaded qemu-exit v3.0.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0543fe692023173a39205b445d9983b9e66ee039aeab7846d9e8aeb876b191e1
[INFO] running `Command { std: "docker" "start" "-a" "0543fe692023173a39205b445d9983b9e66ee039aeab7846d9e8aeb876b191e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0543fe692023173a39205b445d9983b9e66ee039aeab7846d9e8aeb876b191e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0543fe692023173a39205b445d9983b9e66ee039aeab7846d9e8aeb876b191e1", kill_on_drop: false }`
[INFO] [stdout] 0543fe692023173a39205b445d9983b9e66ee039aeab7846d9e8aeb876b191e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d830683bdc87873fb7410fb96529c735f8ce9bcffb9efd209c5fa0fcafdccaee
[INFO] running `Command { std: "docker" "start" "-a" "d830683bdc87873fb7410fb96529c735f8ce9bcffb9efd209c5fa0fcafdccaee", kill_on_drop: false }`
[INFO] [stderr]    Compiling lock_api v0.4.14
[INFO] [stderr]    Compiling spin v0.9.8
[INFO] [stderr]    Compiling lazy_static v1.5.0
[INFO] [stderr]    Compiling mango-core v0.2.1
[INFO] [stderr]    Compiling mango-test v0.2.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "d830683bdc87873fb7410fb96529c735f8ce9bcffb9efd209c5fa0fcafdccaee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d830683bdc87873fb7410fb96529c735f8ce9bcffb9efd209c5fa0fcafdccaee", kill_on_drop: false }`
[INFO] [stdout] d830683bdc87873fb7410fb96529c735f8ce9bcffb9efd209c5fa0fcafdccaee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8fc1d4ad7ab09790cdfaa6f38d22fccc7b219ad790d3b168b37fae2d7d0fef84
[INFO] running `Command { std: "docker" "start" "-a" "8fc1d4ad7ab09790cdfaa6f38d22fccc7b219ad790d3b168b37fae2d7d0fef84", kill_on_drop: false }`
[INFO] [stderr]    Compiling mango-test v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[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 `mango-test` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "8fc1d4ad7ab09790cdfaa6f38d22fccc7b219ad790d3b168b37fae2d7d0fef84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8fc1d4ad7ab09790cdfaa6f38d22fccc7b219ad790d3b168b37fae2d7d0fef84", kill_on_drop: false }`
[INFO] [stdout] 8fc1d4ad7ab09790cdfaa6f38d22fccc7b219ad790d3b168b37fae2d7d0fef84