[INFO] fetching crate tracing-libatrace 0.1.0...
[INFO] checking tracing-libatrace-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate tracing-libatrace 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate tracing-libatrace 0.1.0 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate tracing-libatrace 0.1.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate tracing-libatrace 0.1.0
[INFO] tweaked toml for crates.io crate tracing-libatrace 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate tracing-libatrace 0.1.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libatrace v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 377919f4259876e9560921a9214a282083995782554eb0bfb0b1f71524027142
[INFO] running `Command { std: "docker" "start" "-a" "377919f4259876e9560921a9214a282083995782554eb0bfb0b1f71524027142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "377919f4259876e9560921a9214a282083995782554eb0bfb0b1f71524027142", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "377919f4259876e9560921a9214a282083995782554eb0bfb0b1f71524027142", kill_on_drop: false }`
[INFO] [stdout] 377919f4259876e9560921a9214a282083995782554eb0bfb0b1f71524027142
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e64bfdee629d0e1dc77277d6f338ae29a7c7c9bd4a0bb4e62fb32676319d61c6
[INFO] running `Command { std: "docker" "start" "-a" "e64bfdee629d0e1dc77277d6f338ae29a7c7c9bd4a0bb4e62fb32676319d61c6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking thread_local v1.1.4
[INFO] [stderr]     Checking tracing-subscriber v0.3.11
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking libatrace v0.1.0
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling pin-project-internal v1.0.10
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]     Checking pin-project v1.0.10
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking tracing-libatrace v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.21s
[INFO] running `Command { std: "docker" "inspect" "e64bfdee629d0e1dc77277d6f338ae29a7c7c9bd4a0bb4e62fb32676319d61c6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e64bfdee629d0e1dc77277d6f338ae29a7c7c9bd4a0bb4e62fb32676319d61c6", kill_on_drop: false }`
[INFO] [stdout] e64bfdee629d0e1dc77277d6f338ae29a7c7c9bd4a0bb4e62fb32676319d61c6