[INFO] fetching crate msb128 0.1.0...
[INFO] testing msb128-0.1.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate msb128 0.1.0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate msb128 0.1.0 on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate msb128 0.1.0
[INFO] finished tweaking crates.io crate msb128 0.1.0
[INFO] tweaked toml for crates.io crate msb128 0.1.0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 78b6bc1f5195165528f9331cde2925e71738d04707298f01081e9ab06c1e045a
[INFO] running `Command { std: "docker" "start" "-a" "78b6bc1f5195165528f9331cde2925e71738d04707298f01081e9ab06c1e045a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "78b6bc1f5195165528f9331cde2925e71738d04707298f01081e9ab06c1e045a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78b6bc1f5195165528f9331cde2925e71738d04707298f01081e9ab06c1e045a", kill_on_drop: false }`
[INFO] [stdout] 78b6bc1f5195165528f9331cde2925e71738d04707298f01081e9ab06c1e045a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7e2581d41e3289c9b70dd65e209be5a27b4296af94bfa58977dcf4e82e73a064
[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" "7e2581d41e3289c9b70dd65e209be5a27b4296af94bfa58977dcf4e82e73a064", kill_on_drop: false }`
[INFO] [stderr]    Compiling msb128 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "7e2581d41e3289c9b70dd65e209be5a27b4296af94bfa58977dcf4e82e73a064", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7e2581d41e3289c9b70dd65e209be5a27b4296af94bfa58977dcf4e82e73a064", kill_on_drop: false }`
[INFO] [stdout] 7e2581d41e3289c9b70dd65e209be5a27b4296af94bfa58977dcf4e82e73a064
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70ac5f9fe3b67d334b2bcd18869973dabe93775132a0607708e6340ffc2bdc9e
[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" "70ac5f9fe3b67d334b2bcd18869973dabe93775132a0607708e6340ffc2bdc9e", kill_on_drop: false }`
[INFO] [stderr]    Compiling msb128 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "70ac5f9fe3b67d334b2bcd18869973dabe93775132a0607708e6340ffc2bdc9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ac5f9fe3b67d334b2bcd18869973dabe93775132a0607708e6340ffc2bdc9e", kill_on_drop: false }`
[INFO] [stdout] 70ac5f9fe3b67d334b2bcd18869973dabe93775132a0607708e6340ffc2bdc9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 54ae256cc5175acd1567ece7f88a751c0cfb2979d8449d59861197bf1f54a6ba
[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" "54ae256cc5175acd1567ece7f88a751c0cfb2979d8449d59861197bf1f54a6ba", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/msb128-43c260ec2e7887d5
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests msb128
[INFO] [stdout] running 4 tests
[INFO] [stdout] test test_is_err_on_negative_write ... ok
[INFO] [stdout] test test_reading ... ok
[INFO] [stdout] test test_writing ... ok
[INFO] [stdout] test test_write_and_then_read ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - read_positive (line 68) ... ok
[INFO] [stdout] test src/lib.rs - read_positive (line 91) ... ok
[INFO] [stdout] test src/lib.rs - write_positive (line 216) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "54ae256cc5175acd1567ece7f88a751c0cfb2979d8449d59861197bf1f54a6ba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "54ae256cc5175acd1567ece7f88a751c0cfb2979d8449d59861197bf1f54a6ba", kill_on_drop: false }`
[INFO] [stdout] 54ae256cc5175acd1567ece7f88a751c0cfb2979d8449d59861197bf1f54a6ba