[INFO] fetching crate embedded_cotoutf8 0.1.1...
[INFO] checking embedded_cotoutf8-0.1.1 against master#fd2c811d25ad5773fbd2463e058bf4edf4d44eb2 for pr-130443
[INFO] extracting crate embedded_cotoutf8 0.1.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate embedded_cotoutf8 0.1.1 on toolchain fd2c811d25ad5773fbd2463e058bf4edf4d44eb2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate embedded_cotoutf8 0.1.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate embedded_cotoutf8 0.1.1
[INFO] tweaked toml for crates.io crate embedded_cotoutf8 0.1.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate embedded_cotoutf8 0.1.1 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" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ac1981da40f28141f37e6cc9824375ec7295e47348302f2070ee96700fe8f0b7
[INFO] running `Command { std: "docker" "start" "-a" "ac1981da40f28141f37e6cc9824375ec7295e47348302f2070ee96700fe8f0b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ac1981da40f28141f37e6cc9824375ec7295e47348302f2070ee96700fe8f0b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ac1981da40f28141f37e6cc9824375ec7295e47348302f2070ee96700fe8f0b7", kill_on_drop: false }`
[INFO] [stdout] ac1981da40f28141f37e6cc9824375ec7295e47348302f2070ee96700fe8f0b7
[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@sha256:96c0aa5895ecf336b730ef27bcdde6e21027415df19888aad3cf1448e5d65d90" "/opt/rustwide/cargo-home/bin/cargo" "+fd2c811d25ad5773fbd2463e058bf4edf4d44eb2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 65b6416108e2c3140eb7b0e36793d25c70906a55aa3c232cdf5f63f5d731f057
[INFO] running `Command { std: "docker" "start" "-a" "65b6416108e2c3140eb7b0e36793d25c70906a55aa3c232cdf5f63f5d731f057", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr] `license` should be used if the package license can be expressed with a standard SPDX expression.
[INFO] [stderr] `license-file` should be used if the package uses a non-standard license.
[INFO] [stderr] See https://doc.rust-lang.org/cargo/reference/manifest.html#the-license-and-license-file-fields for more information.
[INFO] [stderr]     Checking embedded_cotoutf8 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error: `#[panic_handler]` function required, but not found
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `embedded_cotoutf8` (example "i8_to_str") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "65b6416108e2c3140eb7b0e36793d25c70906a55aa3c232cdf5f63f5d731f057", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65b6416108e2c3140eb7b0e36793d25c70906a55aa3c232cdf5f63f5d731f057", kill_on_drop: false }`
[INFO] [stdout] 65b6416108e2c3140eb7b0e36793d25c70906a55aa3c232cdf5f63f5d731f057
