[INFO] fetching crate split-buffer 0.1.0...
[INFO] testing split-buffer-0.1.0 against master#350d0ef0ec0493e6d21cfb265cb8211a0e74d766 for pr-145330-1
[INFO] extracting crate split-buffer 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate split-buffer 0.1.0
[INFO] finished tweaking crates.io crate split-buffer 0.1.0
[INFO] tweaked toml for crates.io crate split-buffer 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate split-buffer 0.1.0 on toolchain 350d0ef0ec0493e6d21cfb265cb8211a0e74d766
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate split-buffer 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" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4539f92f8cfa6a028f43a7e5770e9c6004ec12fe959cf6f6d6dd7fa9b69472e7
[INFO] running `Command { std: "docker" "start" "-a" "4539f92f8cfa6a028f43a7e5770e9c6004ec12fe959cf6f6d6dd7fa9b69472e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4539f92f8cfa6a028f43a7e5770e9c6004ec12fe959cf6f6d6dd7fa9b69472e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4539f92f8cfa6a028f43a7e5770e9c6004ec12fe959cf6f6d6dd7fa9b69472e7", kill_on_drop: false }`
[INFO] [stdout] 4539f92f8cfa6a028f43a7e5770e9c6004ec12fe959cf6f6d6dd7fa9b69472e7
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e536f8843a1c80219a31f9eac40ed10590ca6739f7f31cc6540dd8934bf6c49d
[INFO] running `Command { std: "docker" "start" "-a" "e536f8843a1c80219a31f9eac40ed10590ca6739f7f31cc6540dd8934bf6c49d", kill_on_drop: false }`
[INFO] [stderr]    Compiling split-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "e536f8843a1c80219a31f9eac40ed10590ca6739f7f31cc6540dd8934bf6c49d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e536f8843a1c80219a31f9eac40ed10590ca6739f7f31cc6540dd8934bf6c49d", kill_on_drop: false }`
[INFO] [stdout] e536f8843a1c80219a31f9eac40ed10590ca6739f7f31cc6540dd8934bf6c49d
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+350d0ef0ec0493e6d21cfb265cb8211a0e74d766" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca4ad1762b8f85be79f545403a22e51f56888322e489c50e1161f26cbd179d0b
[INFO] running `Command { std: "docker" "start" "-a" "ca4ad1762b8f85be79f545403a22e51f56888322e489c50e1161f26cbd179d0b", kill_on_drop: false }`
[INFO] [stderr]    Compiling split-buffer v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0277]: `Buffer` doesn't implement `Debug`
[INFO] [stdout]  --> examples/simple.rs:7:22
[INFO] [stdout]   |
[INFO] [stdout] 7 |     println!("{:?}", &buf);
[INFO] [stdout]   |               ----   ^^^^ `Buffer` cannot be formatted using `{:?}` because it doesn't implement `Debug`
[INFO] [stdout]   |               |
[INFO] [stdout]   |               required by this formatting parameter
[INFO] [stdout]   |
[INFO] [stdout]   = help: the trait `Debug` is not implemented for `Buffer`
[INFO] [stdout]   = note: required for `&Buffer` to implement `Debug`
[INFO] [stdout]   = note: this error originates in the macro `$crate::format_args_nl` which comes from the expansion of the macro `println` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0277`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `split-buffer` (example "simple") due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ca4ad1762b8f85be79f545403a22e51f56888322e489c50e1161f26cbd179d0b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4ad1762b8f85be79f545403a22e51f56888322e489c50e1161f26cbd179d0b", kill_on_drop: false }`
[INFO] [stdout] ca4ad1762b8f85be79f545403a22e51f56888322e489c50e1161f26cbd179d0b