[INFO] fetching crate rental-impl 0.5.5...
[INFO] testing rental-impl-0.5.5 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate rental-impl 0.5.5 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rental-impl 0.5.5 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rental-impl 0.5.5
[INFO] finished tweaking crates.io crate rental-impl 0.5.5
[INFO] tweaked toml for crates.io crate rental-impl 0.5.5 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 65359fcbc4400c9dc5637b81999c24d4ea9c3e38256b91d5290925c44fdea363
[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" "65359fcbc4400c9dc5637b81999c24d4ea9c3e38256b91d5290925c44fdea363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "65359fcbc4400c9dc5637b81999c24d4ea9c3e38256b91d5290925c44fdea363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "65359fcbc4400c9dc5637b81999c24d4ea9c3e38256b91d5290925c44fdea363", kill_on_drop: false }`
[INFO] [stdout] 65359fcbc4400c9dc5637b81999c24d4ea9c3e38256b91d5290925c44fdea363
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4f48d8720422d381c128496cc311996225b0cfbbe92d1ba473e98bea1282d7f
[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" "e4f48d8720422d381c128496cc311996225b0cfbbe92d1ba473e98bea1282d7f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling rental-impl v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1428:106
[INFO] [stdout]      |
[INFO] [stdout] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stdout]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.16s
[INFO] running `Command { std: "docker" "inspect" "e4f48d8720422d381c128496cc311996225b0cfbbe92d1ba473e98bea1282d7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4f48d8720422d381c128496cc311996225b0cfbbe92d1ba473e98bea1282d7f", kill_on_drop: false }`
[INFO] [stdout] e4f48d8720422d381c128496cc311996225b0cfbbe92d1ba473e98bea1282d7f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 804f17a4920e209d96c01b1f6d68405b0b159f6db0f098129f55b332e296c357
[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" "804f17a4920e209d96c01b1f6d68405b0b159f6db0f098129f55b332e296c357", kill_on_drop: false }`
[INFO] [stderr]    Compiling rental-impl v0.5.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1428:106
[INFO] [stdout]      |
[INFO] [stdout] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stdout]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]     --> src/lib.rs:1428:106
[INFO] [stdout]      |
[INFO] [stdout] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stdout]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.93s
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "804f17a4920e209d96c01b1f6d68405b0b159f6db0f098129f55b332e296c357", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "804f17a4920e209d96c01b1f6d68405b0b159f6db0f098129f55b332e296c357", kill_on_drop: false }`
[INFO] [stdout] 804f17a4920e209d96c01b1f6d68405b0b159f6db0f098129f55b332e296c357
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b07a97d60310cdc9995975bc29d447f405165db1cb1d8c105ea4242300f73c29
[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" "b07a97d60310cdc9995975bc29d447f405165db1cb1d8c105ea4242300f73c29", kill_on_drop: false }`
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]     --> src/lib.rs:1428:106
[INFO] [stderr]      |
[INFO] [stderr] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stderr]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]     --> src/lib.rs:1428:106
[INFO] [stderr]      |
[INFO] [stderr] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stderr]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/rental_impl-c47798031758429a
[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] [stderr]    Doc-tests rental-impl
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]     --> /opt/rustwide/workdir/src/lib.rs:1428:106
[INFO] [stderr]      |
[INFO] [stderr] 1428 |             let prev_new_exprs_reverse = &borrows[0 .. idx].iter().map(|b| &b.new_expr).rev().collect::<Vec<_>>();;
[INFO] [stderr]      |                                                                                                                   ^ help: remove this semicolon
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[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" "b07a97d60310cdc9995975bc29d447f405165db1cb1d8c105ea4242300f73c29", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b07a97d60310cdc9995975bc29d447f405165db1cb1d8c105ea4242300f73c29", kill_on_drop: false }`
[INFO] [stdout] b07a97d60310cdc9995975bc29d447f405165db1cb1d8c105ea4242300f73c29