[INFO] fetching crate fobserver 0.2.4...
[INFO] testing fobserver-0.2.4 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate fobserver 0.2.4 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate fobserver 0.2.4
[INFO] finished tweaking crates.io crate fobserver 0.2.4
[INFO] tweaked toml for crates.io crate fobserver 0.2.4 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate fobserver 0.2.4 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 2 packages to latest compatible versions
[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] 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] 9581a9e9c39921f1c457eb63c43e3fc025eed70dcb1bc8280a272e623676c073
[INFO] running `Command { std: "docker" "start" "-a" "9581a9e9c39921f1c457eb63c43e3fc025eed70dcb1bc8280a272e623676c073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9581a9e9c39921f1c457eb63c43e3fc025eed70dcb1bc8280a272e623676c073", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9581a9e9c39921f1c457eb63c43e3fc025eed70dcb1bc8280a272e623676c073", kill_on_drop: false }`
[INFO] [stdout] 9581a9e9c39921f1c457eb63c43e3fc025eed70dcb1bc8280a272e623676c073
[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] 03f13960a0c1d7b9a861016d5014b1343fecd9e98423e9eb4f71207a76e112a6
[INFO] running `Command { std: "docker" "start" "-a" "03f13960a0c1d7b9a861016d5014b1343fecd9e98423e9eb4f71207a76e112a6", kill_on_drop: false }`
[INFO] [stderr]    Compiling fobserver v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:47:16
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                ^^^^^                     ------------------------------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                |
[INFO] [stdout]    |                this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                    ^^^^^                     ------------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "03f13960a0c1d7b9a861016d5014b1343fecd9e98423e9eb4f71207a76e112a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03f13960a0c1d7b9a861016d5014b1343fecd9e98423e9eb4f71207a76e112a6", kill_on_drop: false }`
[INFO] [stdout] 03f13960a0c1d7b9a861016d5014b1343fecd9e98423e9eb4f71207a76e112a6
[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" "test" "--frozen" "--no-run" "--message-format=json" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 676f8cd603ae7a7cace6d28b4280fd65d79cff3e0e850f8389b0ddb14999eddc
[INFO] running `Command { std: "docker" "start" "-a" "676f8cd603ae7a7cace6d28b4280fd65d79cff3e0e850f8389b0ddb14999eddc", kill_on_drop: false }`
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:47:16
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                ^^^^^                     ------------------------------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                |
[INFO] [stdout]    |                this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                    ^^^^^                     ------------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling fobserver v0.2.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:47:16
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                ^^^^^                     ------------------------------------------------ the lifetime gets resolved as `'_`
[INFO] [stdout]    |                |
[INFO] [stdout]    |                this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/args.rs:66:20
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                    ^^^^^                     ------------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    this lifetime flows to the output
[INFO] [stdout]    |
[INFO] [stdout] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stdout]    |
[INFO] [stdout] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "676f8cd603ae7a7cace6d28b4280fd65d79cff3e0e850f8389b0ddb14999eddc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "676f8cd603ae7a7cace6d28b4280fd65d79cff3e0e850f8389b0ddb14999eddc", kill_on_drop: false }`
[INFO] [stdout] 676f8cd603ae7a7cace6d28b4280fd65d79cff3e0e850f8389b0ddb14999eddc
[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" "test" "--frozen" "--target" "x86_64-unknown-linux-musl", kill_on_drop: false }`
[INFO] [stdout] 718b7d603102a3ca8c5789ad1a7fa21de1a27171f5a818b6fc1634a1e3ee53a4
[INFO] running `Command { std: "docker" "start" "-a" "718b7d603102a3ca8c5789ad1a7fa21de1a27171f5a818b6fc1634a1e3ee53a4", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/args.rs:47:16
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stderr]    |                ^^^^^                     ------------------------------------------------ the lifetime gets resolved as `'_`
[INFO] [stderr]    |                |
[INFO] [stderr]    |                this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn arg(&self, name: &str) -> Box<RwLockReadGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stderr]    |                                                          +++
[INFO] [stderr] 
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/args.rs:66:20
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<dyn Any + Send + Sync + 'static>> {
[INFO] [stderr]    |                    ^^^^^                     ------------------------------------------------- the lifetime gets resolved as `'_`
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    this lifetime flows to the output
[INFO] [stderr]    |
[INFO] [stderr] help: one option is to remove the lifetime for references and use the anonymous lifetime for paths
[INFO] [stderr]    |
[INFO] [stderr] 66 |     pub fn arg_mut(&self, name: &str) -> Box<RwLockWriteGuard<'_, dyn Any + Send + Sync + 'static>> {
[INFO] [stderr]    |                                                               +++
[INFO] [stderr] 
[INFO] [stderr] warning: `fobserver` (lib) generated 2 warnings (run `cargo fix --lib -p fobserver` to apply 2 suggestions)
[INFO] [stderr] warning: `fobserver` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/fobserver-c320a645f93fb08a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "718b7d603102a3ca8c5789ad1a7fa21de1a27171f5a818b6fc1634a1e3ee53a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "718b7d603102a3ca8c5789ad1a7fa21de1a27171f5a818b6fc1634a1e3ee53a4", kill_on_drop: false }`
[INFO] [stdout] 718b7d603102a3ca8c5789ad1a7fa21de1a27171f5a818b6fc1634a1e3ee53a4