[INFO] fetching crate valog 0.2.1...
[INFO] testing valog-0.2.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate valog 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate valog 0.2.1
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate valog 0.2.1
[INFO] tweaked toml for crates.io crate valog 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate valog 0.2.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate valog 0.2.1 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded viewit v0.1.5
[INFO] [stderr]   Downloaded dbutils v0.9.0
[INFO] [stderr]   Downloaded derivit-core v0.1.5
[INFO] [stderr]   Downloaded cheap-clone v0.1.7
[INFO] [stderr]   Downloaded rustix v0.38.38
[INFO] [stderr]   Downloaded oorandom v11.1.4
[INFO] [stderr]   Downloaded prettyplease v0.1.25
[INFO] [stderr]   Downloaded xxhash-rust v0.8.12
[INFO] [stderr]   Downloaded wg v0.9.2
[INFO] [stderr]   Downloaded fs4 v0.10.0
[INFO] [stderr]   Downloaded rarena-allocator v0.4.15
[INFO] [stderr]   Downloaded syn v2.0.85
[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" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] af2dea8b1ad7dbb980a0b8167ea45f432c31974f13c2a6675c4f6a86277eba0a
[INFO] running `Command { std: "docker" "start" "-a" "af2dea8b1ad7dbb980a0b8167ea45f432c31974f13c2a6675c4f6a86277eba0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "af2dea8b1ad7dbb980a0b8167ea45f432c31974f13c2a6675c4f6a86277eba0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af2dea8b1ad7dbb980a0b8167ea45f432c31974f13c2a6675c4f6a86277eba0a", kill_on_drop: false }`
[INFO] [stdout] af2dea8b1ad7dbb980a0b8167ea45f432c31974f13c2a6675c4f6a86277eba0a
[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" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce34a35b291597a68d665d7b8e964d83ddfff60408f8340c4a4ffa7c4ac2d10c
[INFO] running `Command { std: "docker" "start" "-a" "ce34a35b291597a68d665d7b8e964d83ddfff60408f8340c4a4ffa7c4ac2d10c", kill_on_drop: false }`
[INFO] [stderr]    Compiling prettyplease v0.1.25
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling rustix v0.38.38
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling cheap-clone v0.1.7
[INFO] [stderr]    Compiling dbutils v0.9.0
[INFO] [stderr]    Compiling memmap2 v0.9.5
[INFO] [stderr]    Compiling fs4 v0.10.0
[INFO] [stderr]    Compiling rarena-allocator v0.4.15
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/rarena-allocator-0.4.15/src/memory.rs:701:46
[INFO] [stdout]     |
[INFO] [stdout] 698 |   pub(crate) fn try_lock_shared(&self) -> std::io::Result<()> {
[INFO] [stdout]     |                                           ------------------- expected `Result<(), std::io::Error>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 701 |       MemoryBackend::MmapMut { file, .. } => file.try_lock_shared(),
[INFO] [stdout]     |                                              ^^^^^^^^^^^^^^^^^^^^^^ expected `Result<(), Error>`, found `Result<(), TryLockError>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: expected enum `Result<_, std::io::Error>`
[INFO] [stdout]                found enum `Result<_, std::fs::TryLockError>`
[INFO] [stdout] help: use `?` to coerce and return an appropriate `Err`, and wrap the resulting value in `Ok` so the expression remains of type `Result`
[INFO] [stdout]     |
[INFO] [stdout] 701 |       MemoryBackend::MmapMut { file, .. } => Ok(file.try_lock_shared()?),
[INFO] [stdout]     |                                              +++                      ++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling darling_core v0.14.4
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rarena-allocator` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "ce34a35b291597a68d665d7b8e964d83ddfff60408f8340c4a4ffa7c4ac2d10c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce34a35b291597a68d665d7b8e964d83ddfff60408f8340c4a4ffa7c4ac2d10c", kill_on_drop: false }`
[INFO] [stdout] ce34a35b291597a68d665d7b8e964d83ddfff60408f8340c4a4ffa7c4ac2d10c