[INFO] fetching crate blockchain 0.9.2...
[INFO] testing blockchain-0.9.2 against try#8de4c7234dd9b97c9d76b58671343fdbbc9a433e+target=x86_64-unknown-linux-musl for musl_upgrade_1_2_5_with_libc_patch_0
[INFO] extracting crate blockchain 0.9.2 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate blockchain 0.9.2
[INFO] finished tweaking crates.io crate blockchain 0.9.2
[INFO] tweaked toml for crates.io crate blockchain 0.9.2 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate blockchain 0.9.2 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 1 package to latest compatible version
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded blockchain-core v0.1.2
[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] 6d50775f9407f19ad43ac1c0759685c80a77fff86a8dc880b0b14e870edd2069
[INFO] running `Command { std: "docker" "start" "-a" "6d50775f9407f19ad43ac1c0759685c80a77fff86a8dc880b0b14e870edd2069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6d50775f9407f19ad43ac1c0759685c80a77fff86a8dc880b0b14e870edd2069", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d50775f9407f19ad43ac1c0759685c80a77fff86a8dc880b0b14e870edd2069", kill_on_drop: false }`
[INFO] [stdout] 6d50775f9407f19ad43ac1c0759685c80a77fff86a8dc880b0b14e870edd2069
[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] ef3fc18d5afa121a7f4341241b80f50004e8335ec38583bc69ae710c0eeef564
[INFO] running `Command { std: "docker" "start" "-a" "ef3fc18d5afa121a7f4341241b80f50004e8335ec38583bc69ae710c0eeef564", kill_on_drop: false }`
[INFO] [stderr]    Compiling blockchain-core v0.1.2
[INFO] [stderr]    Compiling blockchain v0.9.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/backend/mod.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn lock(&self) -> MutexGuard<()> {
[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] 33 |     pub fn lock(&self) -> MutexGuard<'_, ()> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "ef3fc18d5afa121a7f4341241b80f50004e8335ec38583bc69ae710c0eeef564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ef3fc18d5afa121a7f4341241b80f50004e8335ec38583bc69ae710c0eeef564", kill_on_drop: false }`
[INFO] [stdout] ef3fc18d5afa121a7f4341241b80f50004e8335ec38583bc69ae710c0eeef564
[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] 4205048d425a12e44978cbd36ea820f99630f5dae79e146a029a6fde3db2feb9
[INFO] running `Command { std: "docker" "start" "-a" "4205048d425a12e44978cbd36ea820f99630f5dae79e146a029a6fde3db2feb9", kill_on_drop: false }`
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/backend/mod.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn lock(&self) -> MutexGuard<()> {
[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] 33 |     pub fn lock(&self) -> MutexGuard<'_, ()> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling blockchain v0.9.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stdout]   --> src/backend/mod.rs:33:14
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn lock(&self) -> MutexGuard<()> {
[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] 33 |     pub fn lock(&self) -> MutexGuard<'_, ()> {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.61s
[INFO] running `Command { std: "docker" "inspect" "4205048d425a12e44978cbd36ea820f99630f5dae79e146a029a6fde3db2feb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4205048d425a12e44978cbd36ea820f99630f5dae79e146a029a6fde3db2feb9", kill_on_drop: false }`
[INFO] [stdout] 4205048d425a12e44978cbd36ea820f99630f5dae79e146a029a6fde3db2feb9
[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] 9e4bb189d486b5fd48ba49002dbee10c254f94a969fdc96baf13674c71d6da7e
[INFO] running `Command { std: "docker" "start" "-a" "9e4bb189d486b5fd48ba49002dbee10c254f94a969fdc96baf13674c71d6da7e", kill_on_drop: false }`
[INFO] [stderr] warning: lifetime flowing from input to output with different syntax can be confusing
[INFO] [stderr]   --> src/backend/mod.rs:33:14
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn lock(&self) -> MutexGuard<()> {
[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] 33 |     pub fn lock(&self) -> MutexGuard<'_, ()> {
[INFO] [stderr]    |                                      +++
[INFO] [stderr] 
[INFO] [stderr] warning: `blockchain` (lib) generated 1 warning (run `cargo fix --lib -p blockchain` to apply 1 suggestion)
[INFO] [stderr] warning: `blockchain` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/x86_64-unknown-linux-musl/debug/deps/blockchain-62735c561b8aeeef)
[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" "9e4bb189d486b5fd48ba49002dbee10c254f94a969fdc96baf13674c71d6da7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e4bb189d486b5fd48ba49002dbee10c254f94a969fdc96baf13674c71d6da7e", kill_on_drop: false }`
[INFO] [stdout] 9e4bb189d486b5fd48ba49002dbee10c254f94a969fdc96baf13674c71d6da7e