[INFO] fetching crate async-file-lock 0.1.4...
[INFO] testing async-file-lock-0.1.4 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate async-file-lock 0.1.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate async-file-lock 0.1.4
[INFO] finished tweaking crates.io crate async-file-lock 0.1.4
[INFO] tweaked toml for crates.io crate async-file-lock 0.1.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate async-file-lock 0.1.4 on toolchain 8de4c7234dd9b97c9d76b58671343fdbbc9a433e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 59 packages to latest compatible versions
[INFO] [stderr]       Adding fork v0.1.23 (available: v0.2.0)
[INFO] [stderr]       Adding futures-lite v1.13.0 (available: v2.6.0)
[INFO] [stderr]       Adding tokio v0.2.25 (available: v1.45.1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fork v0.1.23
[INFO] [stderr]   Downloaded fs3 v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c726dbbbd42f91d3033dcc4024e6833635c32d67b5b14ea3c5736a6ba125da4d
[INFO] running `Command { std: "docker" "start" "-a" "c726dbbbd42f91d3033dcc4024e6833635c32d67b5b14ea3c5736a6ba125da4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c726dbbbd42f91d3033dcc4024e6833635c32d67b5b14ea3c5736a6ba125da4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c726dbbbd42f91d3033dcc4024e6833635c32d67b5b14ea3c5736a6ba125da4d", kill_on_drop: false }`
[INFO] [stdout] c726dbbbd42f91d3033dcc4024e6833635c32d67b5b14ea3c5736a6ba125da4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8de4c7234dd9b97c9d76b58671343fdbbc9a433e" "build" "--frozen" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 185b272185a5aa17acd489d68679d26985c7e0ddaf0570b6b08e864d76d23495
[INFO] running `Command { std: "docker" "start" "-a" "185b272185a5aa17acd489d68679d26985c7e0ddaf0570b6b08e864d76d23495", kill_on_drop: false }`
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling futures-core v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling parking v2.2.1
[INFO] [stderr]    Compiling bytes v0.5.6
[INFO] [stderr]    Compiling waker-fn v1.2.0
[INFO] [stderr]    Compiling pin-project-lite v0.1.12
[INFO] [stderr]    Compiling futures-lite v1.13.0
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling fs3 v0.5.0
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling tokio v0.2.25
[INFO] [stderr]    Compiling async-file-lock v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]    --> src/lib.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 117 |       pub fn try_lock_shared(&mut self) -> Result<()> {
[INFO] [stdout]     |                                            ---------- expected `Result<(), std::io::Error>` because of return type
[INFO] [stdout] ...
[INFO] [stdout] 122 | /         self.unlocked_file.as_mut().unwrap().try_lock_shared().map(|_| {
[INFO] [stdout] 123 | |             self.locked_file = Some(File::from_std(self.unlocked_file.take().unwrap()));
[INFO] [stdout] 124 | |             self.state = State::Locked;
[INFO] [stdout] 125 | |
[INFO] [stdout] 126 | |         })
[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] 122 ~         Ok(self.unlocked_file.as_mut().unwrap().try_lock_shared().map(|_| {
[INFO] [stdout] 123 |             self.locked_file = Some(File::from_std(self.unlocked_file.take().unwrap()));
[INFO] [stdout] 124 |             self.state = State::Locked;
[INFO] [stdout] 125 |
[INFO] [stdout] 126 ~         })?)
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `async-file-lock` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "185b272185a5aa17acd489d68679d26985c7e0ddaf0570b6b08e864d76d23495", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "185b272185a5aa17acd489d68679d26985c7e0ddaf0570b6b08e864d76d23495", kill_on_drop: false }`
[INFO] [stdout] 185b272185a5aa17acd489d68679d26985c7e0ddaf0570b6b08e864d76d23495