[INFO] fetching crate transaction-stm 0.2.0...
[INFO] checking transaction-stm-0.2.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate transaction-stm 0.2.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate transaction-stm 0.2.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate transaction-stm 0.2.0
[INFO] finished tweaking crates.io crate transaction-stm 0.2.0
[INFO] tweaked toml for crates.io crate transaction-stm 0.2.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 213442d18791d1718ee6b2ed36780148dcdceaae7505b796607278206a6a0fd7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "213442d18791d1718ee6b2ed36780148dcdceaae7505b796607278206a6a0fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "213442d18791d1718ee6b2ed36780148dcdceaae7505b796607278206a6a0fd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "213442d18791d1718ee6b2ed36780148dcdceaae7505b796607278206a6a0fd7", kill_on_drop: false }`
[INFO] [stdout] 213442d18791d1718ee6b2ed36780148dcdceaae7505b796607278206a6a0fd7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f6c474a3eb4e931cfaa353d881cc8ccfafbe28c9ac363bb796b18dd38fde92a1
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f6c474a3eb4e931cfaa353d881cc8ccfafbe28c9ac363bb796b18dd38fde92a1", kill_on_drop: false }`
[INFO] [stderr]     Checking transaction v0.2.1
[INFO] [stderr]     Checking stm v0.2.4
[INFO] [stderr]     Checking transaction-stm v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> benches/boxed_vs_branch.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 | type BoxTx<'a, T> = Box<Transaction<Ctx = stm::Transaction, Item = T, Err = stm::StmError> + 'a>;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Transaction<Ctx = stm::Transaction, Item = T, Err = stm::StmError> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> examples/impl_struct.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 | type BoxTx<'a, T> = Box<Transaction<Ctx = stm::Transaction, Item = T, Err = stm::StmError> + 'a>;
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Transaction<Ctx = stm::Transaction, Item = T, Err = stm::StmError> + 'a`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.48s
[INFO] running `Command { std: "docker" "inspect" "f6c474a3eb4e931cfaa353d881cc8ccfafbe28c9ac363bb796b18dd38fde92a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f6c474a3eb4e931cfaa353d881cc8ccfafbe28c9ac363bb796b18dd38fde92a1", kill_on_drop: false }`
[INFO] [stdout] f6c474a3eb4e931cfaa353d881cc8ccfafbe28c9ac363bb796b18dd38fde92a1