[INFO] fetching crate nibblerun 0.1.6...
[INFO] checking nibblerun-0.1.6 against master#bbe853615821442ef11d6cd42a30a73432b38d89 for pr-154205
[INFO] extracting crate nibblerun 0.1.6 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate nibblerun 0.1.6
[INFO] finished tweaking crates.io crate nibblerun 0.1.6
[INFO] tweaked toml for crates.io crate nibblerun 0.1.6 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate nibblerun 0.1.6 on toolchain bbe853615821442ef11d6cd42a30a73432b38d89
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate nibblerun 0.1.6 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" "+bbe853615821442ef11d6cd42a30a73432b38d89" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
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[INFO] [stderr]   Downloaded brotli v7.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6fe0ee0dfad4828324cc62563f8bb49eefbdc4964835d420de627de7fb6f8082
[INFO] running `Command { std: "docker" "start" "-a" "6fe0ee0dfad4828324cc62563f8bb49eefbdc4964835d420de627de7fb6f8082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6fe0ee0dfad4828324cc62563f8bb49eefbdc4964835d420de627de7fb6f8082", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6fe0ee0dfad4828324cc62563f8bb49eefbdc4964835d420de627de7fb6f8082", kill_on_drop: false }`
[INFO] [stdout] 6fe0ee0dfad4828324cc62563f8bb49eefbdc4964835d420de627de7fb6f8082
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+bbe853615821442ef11d6cd42a30a73432b38d89" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c584ff3cf18ccb242f2ab61bf2afd680116f4384616093127443e4d7ea1a5f57
[INFO] running `Command { std: "docker" "start" "-a" "c584ff3cf18ccb242f2ab61bf2afd680116f4384616093127443e4d7ea1a5f57", kill_on_drop: false }`
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[INFO] [stdout] error[E0432]: unresolved import `nibblerun::decode`
[INFO] [stdout]  --> benches/benchmarks.rs:2:17
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nibblerun::{decode, Encoder};
[INFO] [stdout]   |                 ^^^^^^ no `decode` in the root
[INFO] [stdout]   |
[INFO] [stdout]   = help: consider importing this module instead:
[INFO] [stdout]           tsz::decode
[INFO] [stdout] help: a similar name exists in the module
[INFO] [stdout]   |
[INFO] [stdout] 2 | use nibblerun::{decoder, Encoder};
[INFO] [stdout]   |                       +
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmarks.rs:14:32
[INFO] [stdout]    |
[INFO] [stdout] 14 |                     enc.append(base_ts + i * 300, black_box(22 + (i % 5) as i32)).unwrap();
[INFO] [stdout]    |                         ------ ^^^^^^^^^^^^^^^^^ expected `u32`, found `u64`
[INFO] [stdout]    |                         |
[INFO] [stdout]    |                         arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/encoder.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn append(&mut self, ts: u32, value: V) -> Result<(), AppendError<V>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] help: you can convert a `u64` to a `u32` and panic if the converted value doesn't fit
[INFO] [stdout]    |
[INFO] [stdout] 14 |                     enc.append((base_ts + i * 300).try_into().unwrap(), black_box(22 + (i % 5) as i32)).unwrap();
[INFO] [stdout]    |                                +                 +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmarks.rs:28:20
[INFO] [stdout]    |
[INFO] [stdout] 28 |         enc.append(base_ts + i * 300, 22 + (i % 5) as i32).unwrap();
[INFO] [stdout]    |             ------ ^^^^^^^^^^^^^^^^^ expected `u32`, found `u64`
[INFO] [stdout]    |             |
[INFO] [stdout]    |             arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/encoder.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn append(&mut self, ts: u32, value: V) -> Result<(), AppendError<V>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] help: you can convert a `u64` to a `u32` and panic if the converted value doesn't fit
[INFO] [stdout]    |
[INFO] [stdout] 28 |         enc.append((base_ts + i * 300).try_into().unwrap(), 22 + (i % 5) as i32).unwrap();
[INFO] [stdout]    |                    +                 +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> benches/benchmarks.rs:48:28
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 enc.append(base_ts + i * 300, black_box(22)).unwrap();
[INFO] [stdout]    |                     ------ ^^^^^^^^^^^^^^^^^ expected `u32`, found `u64`
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     arguments to this method are incorrect
[INFO] [stdout]    |
[INFO] [stdout] note: method defined here
[INFO] [stdout]   --> src/encoder.rs:64:12
[INFO] [stdout]    |
[INFO] [stdout] 64 |     pub fn append(&mut self, ts: u32, value: V) -> Result<(), AppendError<V>> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] help: you can convert a `u64` to a `u32` and panic if the converted value doesn't fit
[INFO] [stdout]    |
[INFO] [stdout] 48 |                 enc.append((base_ts + i * 300).try_into().unwrap(), black_box(22)).unwrap();
[INFO] [stdout]    |                            +                 +++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0432.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nibblerun` (bench "benchmarks") due to 4 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "c584ff3cf18ccb242f2ab61bf2afd680116f4384616093127443e4d7ea1a5f57", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c584ff3cf18ccb242f2ab61bf2afd680116f4384616093127443e4d7ea1a5f57", kill_on_drop: false }`
[INFO] [stdout] c584ff3cf18ccb242f2ab61bf2afd680116f4384616093127443e4d7ea1a5f57