[INFO] fetching crate m-o 1.0.0...
[INFO] testing m-o-1.0.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate m-o 1.0.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate m-o 1.0.0 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 m-o 1.0.0
[INFO] finished tweaking crates.io crate m-o 1.0.0
[INFO] tweaked toml for crates.io crate m-o 1.0.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate m-o 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "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-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae72f5afd14d84fc95950fbe8cab7c7fdc42a3e63fb29b671eec67db3a8fab9e
[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" "ae72f5afd14d84fc95950fbe8cab7c7fdc42a3e63fb29b671eec67db3a8fab9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae72f5afd14d84fc95950fbe8cab7c7fdc42a3e63fb29b671eec67db3a8fab9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae72f5afd14d84fc95950fbe8cab7c7fdc42a3e63fb29b671eec67db3a8fab9e", kill_on_drop: false }`
[INFO] [stdout] ae72f5afd14d84fc95950fbe8cab7c7fdc42a3e63fb29b671eec67db3a8fab9e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", 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] 22e15e8fd10d71ebbf0ced90242713d3ea56eee8380034c7f0bfc07194442192
[INFO] running `Command { std: "docker" "start" "-a" "22e15e8fd10d71ebbf0ced90242713d3ea56eee8380034c7f0bfc07194442192", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling regex-syntax v0.6.12
[INFO] [stderr]    Compiling static_assertions v0.3.4
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling numtoa v0.1.0
[INFO] [stderr]    Compiling typed-arena v1.5.0
[INFO] [stderr]    Compiling nom v5.0.1
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling stackvector v1.0.6
[INFO] [stderr]    Compiling lexical-core v0.4.3
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling pretty v0.6.0
[INFO] [stderr]    Compiling aho-corasick v0.7.6
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling termion v1.5.3
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling regex v1.3.1
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]    Compiling structopt-derive v0.3.1
[INFO] [stderr]    Compiling structopt v0.3.1
[INFO] [stderr]    Compiling m-o v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.78s
[INFO] running `Command { std: "docker" "inspect" "22e15e8fd10d71ebbf0ced90242713d3ea56eee8380034c7f0bfc07194442192", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22e15e8fd10d71ebbf0ced90242713d3ea56eee8380034c7f0bfc07194442192", kill_on_drop: false }`
[INFO] [stdout] 22e15e8fd10d71ebbf0ced90242713d3ea56eee8380034c7f0bfc07194442192
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5a105a2b8175df4f168c766728d7878a326a54ac5fdfc7f0fc7a2fd7d4d587fc
[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" "5a105a2b8175df4f168c766728d7878a326a54ac5fdfc7f0fc7a2fd7d4d587fc", kill_on_drop: false }`
[INFO] [stderr]    Compiling m-o v1.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.82s
[INFO] running `Command { std: "docker" "inspect" "5a105a2b8175df4f168c766728d7878a326a54ac5fdfc7f0fc7a2fd7d4d587fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a105a2b8175df4f168c766728d7878a326a54ac5fdfc7f0fc7a2fd7d4d587fc", kill_on_drop: false }`
[INFO] [stdout] 5a105a2b8175df4f168c766728d7878a326a54ac5fdfc7f0fc7a2fd7d4d587fc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 7bb824b627b2ba0f1077caea872b9b790c93df510587f6e70c66259d10d84fba
[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" "7bb824b627b2ba0f1077caea872b9b790c93df510587f6e70c66259d10d84fba", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.10s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/m_o-77c5d72b6b4232c7
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/m_o-82d69ffda8a15f65
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/parsing_tests-707f4a8c3ed758ba
[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
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 19 tests
[INFO] [stdout] test test_float_vs_int_precedence ... ok
[INFO] [stdout] test test_int ... ok
[INFO] [stdout] test test_list ... ok
[INFO] [stdout] test test_str ... ok
[INFO] [stdout] test test_float ... ok
[INFO] [stdout] test test_quotes_inside_quotes ... ok
[INFO] [stdout] test test_set ... ok
[INFO] [stdout] test test_tuple ... ok
[INFO] [stdout] test test_symbol_with_dot ... ok
[INFO] [stdout] test test_empty_set ... ok
[INFO] [stdout] test test_bool ... ok
[INFO] [stdout] test test_empty_dict_value ... ok
[INFO] [stdout] test test_dict ... ok
[INFO] [stdout] test test_str_escaping ... ok
[INFO] [stdout] test test_big_value ... ok
[INFO] [stdout] test test_mixed_args_and_kwargs_constructor ... ok
[INFO] [stdout] test test_datetime_constructor ... ok
[INFO] [stdout] test test_symbol ... ok
[INFO] [stdout] test test_constructor ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 19 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pretty_printing_tests-0c50eb46af78643c
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test_simple_value_to_string ... ok
[INFO] [stdout] test test_nested_dicts_to_string ... ok
[INFO] [stderr]    Doc-tests m-o
[INFO] [stdout] test test_deep_nesting_to_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "7bb824b627b2ba0f1077caea872b9b790c93df510587f6e70c66259d10d84fba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bb824b627b2ba0f1077caea872b9b790c93df510587f6e70c66259d10d84fba", kill_on_drop: false }`
[INFO] [stdout] 7bb824b627b2ba0f1077caea872b9b790c93df510587f6e70c66259d10d84fba