[INFO] fetching crate rtt 0.4.4...
[INFO] testing rtt-0.4.4 against beta-2022-04-10 for beta-1.61-1
[INFO] extracting crate rtt 0.4.4 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate rtt 0.4.4 on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rtt 0.4.4
[INFO] finished tweaking crates.io crate rtt 0.4.4
[INFO] tweaked toml for crates.io crate rtt 0.4.4 written to /workspace/builds/worker-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "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-2022-04-10" "fetch" "--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-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 29caa8ec6ebb3b5af5bd7860092052343b474371e01a14c94dc5eb6e8bc6063d
[INFO] running `Command { std: "docker" "start" "-a" "29caa8ec6ebb3b5af5bd7860092052343b474371e01a14c94dc5eb6e8bc6063d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "29caa8ec6ebb3b5af5bd7860092052343b474371e01a14c94dc5eb6e8bc6063d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29caa8ec6ebb3b5af5bd7860092052343b474371e01a14c94dc5eb6e8bc6063d", kill_on_drop: false }`
[INFO] [stdout] 29caa8ec6ebb3b5af5bd7860092052343b474371e01a14c94dc5eb6e8bc6063d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a8c43dd2f3703a6c03e72288fff933c3e681d639a7a72231e0064c07eaf8ee13
[INFO] running `Command { std: "docker" "start" "-a" "a8c43dd2f3703a6c03e72288fff933c3e681d639a7a72231e0064c07eaf8ee13", kill_on_drop: false }`
[INFO] [stderr]    Compiling rtt v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.00s
[INFO] running `Command { std: "docker" "inspect" "a8c43dd2f3703a6c03e72288fff933c3e681d639a7a72231e0064c07eaf8ee13", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8c43dd2f3703a6c03e72288fff933c3e681d639a7a72231e0064c07eaf8ee13", kill_on_drop: false }`
[INFO] [stdout] a8c43dd2f3703a6c03e72288fff933c3e681d639a7a72231e0064c07eaf8ee13
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ca269b1a21c6a728c3396f8da90225eabbd3f9766d7aa710646e2e02e25a260
[INFO] running `Command { std: "docker" "start" "-a" "2ca269b1a21c6a728c3396f8da90225eabbd3f9766d7aa710646e2e02e25a260", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling rtt v0.4.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 4.96s
[INFO] [stderr]   Executable unittests src/lib.rs (/opt/rustwide/target/debug/deps/rtt-cf16442063c9f24a)
[INFO] running `Command { std: "docker" "inspect" "2ca269b1a21c6a728c3396f8da90225eabbd3f9766d7aa710646e2e02e25a260", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ca269b1a21c6a728c3396f8da90225eabbd3f9766d7aa710646e2e02e25a260", kill_on_drop: false }`
[INFO] [stdout] 2ca269b1a21c6a728c3396f8da90225eabbd3f9766d7aa710646e2e02e25a260
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 1ce7d9bd43fa9585368d4137b80d3d4b39200f59e344087e28723c909abc471e
[INFO] running `Command { std: "docker" "start" "-a" "1ce7d9bd43fa9585368d4137b80d3d4b39200f59e344087e28723c909abc471e", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rtt-cf16442063c9f24a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::skeleton ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rtt
[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" "1ce7d9bd43fa9585368d4137b80d3d4b39200f59e344087e28723c909abc471e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ce7d9bd43fa9585368d4137b80d3d4b39200f59e344087e28723c909abc471e", kill_on_drop: false }`
[INFO] [stdout] 1ce7d9bd43fa9585368d4137b80d3d4b39200f59e344087e28723c909abc471e