[INFO] fetching crate transaction-stm 0.2.0...
[INFO] checking transaction-stm-0.2.0 against beta for pr-78714
[INFO] extracting crate transaction-stm 0.2.0 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate transaction-stm 0.2.0 on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 273c1f8a117f38ce6978e11f409e6a129dd494c3c5bac377b32b21fe65042528
[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" "273c1f8a117f38ce6978e11f409e6a129dd494c3c5bac377b32b21fe65042528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "273c1f8a117f38ce6978e11f409e6a129dd494c3c5bac377b32b21fe65042528", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "273c1f8a117f38ce6978e11f409e6a129dd494c3c5bac377b32b21fe65042528", kill_on_drop: false }`
[INFO] [stdout] 273c1f8a117f38ce6978e11f409e6a129dd494c3c5bac377b32b21fe65042528
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5b422b146d7d88fd3ee6762627879b713c96d295014a01a13a8be8b9973dba0f
[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" "5b422b146d7d88fd3ee6762627879b713c96d295014a01a13a8be8b9973dba0f", kill_on_drop: false }`
[INFO] [stderr]     Checking stm v0.2.4
[INFO] [stderr]     Checking transaction v0.2.1
[INFO] [stderr]     Checking transaction-stm v0.2.0 (/opt/rustwide/workdir)
[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] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/boxed_vs_branch.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `transaction-stm`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "5b422b146d7d88fd3ee6762627879b713c96d295014a01a13a8be8b9973dba0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b422b146d7d88fd3ee6762627879b713c96d295014a01a13a8be8b9973dba0f", kill_on_drop: false }`
[INFO] [stdout] 5b422b146d7d88fd3ee6762627879b713c96d295014a01a13a8be8b9973dba0f