[INFO] cloning repository https://github.com/libc-furiosa/extreme-tracing-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/libc-furiosa/extreme-tracing-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flibc-furiosa%2Fextreme-tracing-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flibc-furiosa%2Fextreme-tracing-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8aece49fd53181139c6298b1b7bfda7c14edb67c
[INFO] checking libc-furiosa/extreme-tracing-example against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flibc-furiosa%2Fextreme-tracing-example" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/libc-furiosa/extreme-tracing-example on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/libc-furiosa/extreme-tracing-example
[INFO] finished tweaking git repo https://github.com/libc-furiosa/extreme-tracing-example
[INFO] tweaked toml for git repo https://github.com/libc-furiosa/extreme-tracing-example written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/libc-furiosa/extreme-tracing-example 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/libc-furiosa/extreme-tracing.git`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded derive_builder_core v0.11.2
[INFO] [stderr]   Downloaded derive_builder_macro v0.11.2
[INFO] [stderr]   Downloaded derive_builder v0.11.2
[INFO] [stderr]   Downloaded tracing-chrometrace v0.1.19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8550cb59aabf8b28ee8bd5237f4e95938bcd8d827fdb0aeeeb0b29f31b68f17a
[INFO] running `Command { std: "docker" "start" "-a" "8550cb59aabf8b28ee8bd5237f4e95938bcd8d827fdb0aeeeb0b29f31b68f17a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8550cb59aabf8b28ee8bd5237f4e95938bcd8d827fdb0aeeeb0b29f31b68f17a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8550cb59aabf8b28ee8bd5237f4e95938bcd8d827fdb0aeeeb0b29f31b68f17a", kill_on_drop: false }`
[INFO] [stdout] 8550cb59aabf8b28ee8bd5237f4e95938bcd8d827fdb0aeeeb0b29f31b68f17a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd38f1874a97c7e89c80c726f8b1421cd772fd5d7188a2a455f24f6359b20cae
[INFO] running `Command { std: "docker" "start" "-a" "dd38f1874a97c7e89c80c726f8b1421cd772fd5d7188a2a455f24f6359b20cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling strum_macros v0.22.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling chrometracer-attributes v0.1.1 (https://github.com/libc-furiosa/extreme-tracing.git#45168c99)
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]     Checking strum v0.22.0
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]     Checking tracing-chrometrace v0.1.19
[INFO] [stderr]     Checking chrometracer v0.1.1 (https://github.com/libc-furiosa/extreme-tracing.git#45168c99)
[INFO] [stderr]     Checking extreme-tracing-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.01s
[INFO] running `Command { std: "docker" "inspect" "dd38f1874a97c7e89c80c726f8b1421cd772fd5d7188a2a455f24f6359b20cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd38f1874a97c7e89c80c726f8b1421cd772fd5d7188a2a455f24f6359b20cae", kill_on_drop: false }`
[INFO] [stdout] dd38f1874a97c7e89c80c726f8b1421cd772fd5d7188a2a455f24f6359b20cae
[INFO] checking libc-furiosa/extreme-tracing-example against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flibc-furiosa%2Fextreme-tracing-example" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/libc-furiosa/extreme-tracing-example on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/libc-furiosa/extreme-tracing-example
[INFO] finished tweaking git repo https://github.com/libc-furiosa/extreme-tracing-example
[INFO] tweaked toml for git repo https://github.com/libc-furiosa/extreme-tracing-example written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/libc-furiosa/extreme-tracing-example 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed456ecf49c48b159d9f8e9753f363f793c929fcbf7f25389bbd7eacb903d1b7
[INFO] running `Command { std: "docker" "start" "-a" "ed456ecf49c48b159d9f8e9753f363f793c929fcbf7f25389bbd7eacb903d1b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed456ecf49c48b159d9f8e9753f363f793c929fcbf7f25389bbd7eacb903d1b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed456ecf49c48b159d9f8e9753f363f793c929fcbf7f25389bbd7eacb903d1b7", kill_on_drop: false }`
[INFO] [stdout] ed456ecf49c48b159d9f8e9753f363f793c929fcbf7f25389bbd7eacb903d1b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 896ed56c51be6b2838b4f2e5fdb7e58efb60c4bc580ba21f4b8835adb23b9f22
[INFO] running `Command { std: "docker" "start" "-a" "896ed56c51be6b2838b4f2e5fdb7e58efb60c4bc580ba21f4b8835adb23b9f22", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling libc v0.2.150
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]    Compiling strsim v0.10.0
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.16
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling serde v1.0.192
[INFO] [stderr]     Checking regex-syntax v0.8.2
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]    Compiling serde_json v1.0.108
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling syn v2.0.39
[INFO] [stderr]     Checking tracing-log v0.2.0
[INFO] [stderr]     Checking either v1.9.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking mio v0.8.9
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking regex-automata v0.4.3
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking matchers v0.1.0
[INFO] [stderr]     Checking regex v1.10.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.27
[INFO] [stderr]    Compiling serde_derive v1.0.192
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stderr]     Checking tokio v1.34.0
[INFO] [stderr]    Compiling strum_macros v0.22.0
[INFO] [stderr]    Compiling derivative v2.2.0
[INFO] [stderr]    Compiling chrometracer-attributes v0.1.1 (https://github.com/libc-furiosa/extreme-tracing.git#45168c99)
[INFO] [stderr]     Checking tracing v0.1.40
[INFO] [stderr]     Checking tracing-subscriber v0.3.18
[INFO] [stderr]    Compiling darling_macro v0.14.4
[INFO] [stderr]     Checking strum v0.22.0
[INFO] [stderr]    Compiling darling v0.14.4
[INFO] [stderr]    Compiling derive_builder_core v0.11.2
[INFO] [stderr]    Compiling derive_builder_macro v0.11.2
[INFO] [stderr]     Checking derive_builder v0.11.2
[INFO] [stderr]     Checking tracing-chrometrace v0.1.19
[INFO] [stderr]     Checking chrometracer v0.1.1 (https://github.com/libc-furiosa/extreme-tracing.git#45168c99)
[INFO] [stderr]     Checking extreme-tracing-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.85s
[INFO] running `Command { std: "docker" "inspect" "896ed56c51be6b2838b4f2e5fdb7e58efb60c4bc580ba21f4b8835adb23b9f22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "896ed56c51be6b2838b4f2e5fdb7e58efb60c4bc580ba21f4b8835adb23b9f22", kill_on_drop: false }`
[INFO] [stdout] 896ed56c51be6b2838b4f2e5fdb7e58efb60c4bc580ba21f4b8835adb23b9f22