[INFO] fetching crate pythonic 0.3.0...
[INFO] testing pythonic-0.3.0 against 1.49.0 for beta-1.50-1
[INFO] extracting crate pythonic 0.3.0 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate pythonic 0.3.0 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 pythonic 0.3.0
[INFO] finished tweaking crates.io crate pythonic 0.3.0
[INFO] tweaked toml for crates.io crate pythonic 0.3.0 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] [stdout] 8830ba87d192b1ddf5c6fefdbf172939ab899d8dee99c46eda18f93072fa4ddf
[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" "8830ba87d192b1ddf5c6fefdbf172939ab899d8dee99c46eda18f93072fa4ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8830ba87d192b1ddf5c6fefdbf172939ab899d8dee99c46eda18f93072fa4ddf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8830ba87d192b1ddf5c6fefdbf172939ab899d8dee99c46eda18f93072fa4ddf", kill_on_drop: false }`
[INFO] [stdout] 8830ba87d192b1ddf5c6fefdbf172939ab899d8dee99c46eda18f93072fa4ddf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] f8171a2a64f4ef329192bdb5f4e7992a68a43661d6eb51ac26580ff3d5055e2b
[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" "f8171a2a64f4ef329192bdb5f4e7992a68a43661d6eb51ac26580ff3d5055e2b", kill_on_drop: false }`
[INFO] [stderr]    Compiling pythonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |         try!(write!(f, "class {}", self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             try!(write!(f, "({})", inherit));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(write!(f, ":\n"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(write!(f, "{}", s));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `Command { std: "docker" "inspect" "f8171a2a64f4ef329192bdb5f4e7992a68a43661d6eb51ac26580ff3d5055e2b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f8171a2a64f4ef329192bdb5f4e7992a68a43661d6eb51ac26580ff3d5055e2b", kill_on_drop: false }`
[INFO] [stdout] f8171a2a64f4ef329192bdb5f4e7992a68a43661d6eb51ac26580ff3d5055e2b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 6cdd2d979fe283399bc70838c0892cb56660dfeff3fc57b7b526e7fed011e7c9
[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" "6cdd2d979fe283399bc70838c0892cb56660dfeff3fc57b7b526e7fed011e7c9", kill_on_drop: false }`
[INFO] [stderr]    Compiling pythonic v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |         try!(write!(f, "class {}", self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             try!(write!(f, "({})", inherit));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(write!(f, ":\n"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(write!(f, "{}", s));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:119:9
[INFO] [stdout]     |
[INFO] [stdout] 119 |         try!(write!(f, "class {}", self.name));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:121:13
[INFO] [stdout]     |
[INFO] [stdout] 121 |             try!(write!(f, "({})", inherit));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:123:9
[INFO] [stdout]     |
[INFO] [stdout] 123 |         try!(write!(f, ":\n"));
[INFO] [stdout]     |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/class.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |             try!(write!(f, "{}", s));
[INFO] [stdout]     |             ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.08s
[INFO] running `Command { std: "docker" "inspect" "6cdd2d979fe283399bc70838c0892cb56660dfeff3fc57b7b526e7fed011e7c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6cdd2d979fe283399bc70838c0892cb56660dfeff3fc57b7b526e7fed011e7c9", kill_on_drop: false }`
[INFO] [stdout] 6cdd2d979fe283399bc70838c0892cb56660dfeff3fc57b7b526e7fed011e7c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] b9e6f55a54647af76044f39c0b4e8432feaecd71dad3ea26829ec1a52d900abf
[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" "b9e6f55a54647af76044f39c0b4e8432feaecd71dad3ea26829ec1a52d900abf", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] running 9 tests
[INFO] [stderr]    --> src/class.rs:119:9
[INFO] [stdout] test class::tests::it_makes_a_class ... ok
[INFO] [stderr]     |
[INFO] [stdout] test function::tests::function::it_outputs_a_function ... ok
[INFO] [stderr] 119 |         try!(write!(f, "class {}", self.name));
[INFO] [stdout] test function::tests::function_call::it_prints_a_function_call ... ok
[INFO] [stderr]     |         ^^^
[INFO] [stdout] test function::tests::function::it_outputs_a_function_with_a_comment ... ok
[INFO] [stderr]     |
[INFO] [stdout] test argument::tests::definition::it_prints_an_argument_with_no_default ... ok
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] test argument::tests::bare_argument::it_prints_an_argument ... ok
[INFO] [stderr] 
[INFO] [stdout] test argument::tests::function_argument::it_prints_an_argument ... ok
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] test block::tests::it_makes_a_complex_function ... ok
[INFO] [stderr]    --> src/class.rs:121:13
[INFO] [stdout] test argument::tests::definition::it_prints_an_argument_with_a_default ... ok
[INFO] [stderr]     |
[INFO] [stdout] 
[INFO] [stderr] 121 |             try!(write!(f, "({})", inherit));
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]     |             ^^^
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(write!(f, ":\n"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             try!(write!(f, "{}", s));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:119:9
[INFO] [stderr]     |
[INFO] [stderr] 119 |         try!(write!(f, "class {}", self.name));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |             try!(write!(f, "({})", inherit));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:123:9
[INFO] [stderr]     |
[INFO] [stderr] 123 |         try!(write!(f, ":\n"));
[INFO] [stderr]     |         ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/class.rs:137:13
[INFO] [stderr]     |
[INFO] [stderr] 137 |             try!(write!(f, "{}", s));
[INFO] [stderr]     |             ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 4 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/pythonic-6c8ecd19c910e92a
[INFO] [stderr]    Doc-tests pythonic
[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" "b9e6f55a54647af76044f39c0b4e8432feaecd71dad3ea26829ec1a52d900abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b9e6f55a54647af76044f39c0b4e8432feaecd71dad3ea26829ec1a52d900abf", kill_on_drop: false }`
[INFO] [stdout] b9e6f55a54647af76044f39c0b4e8432feaecd71dad3ea26829ec1a52d900abf