Dec 14 16:04:57.753 INFO testing trek-0.3.1 against try#aa49d8ef14939ddec0e34b346b60174a5673d48f for pr-56550
Dec 14 16:04:57.753 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 16:04:58.076 INFO [stdout] 9763f5881428302601c109be9100290a71ab8f3ff73a8c311143f5737e4151c1
Dec 14 16:04:58.078 INFO running `"docker" "start" "-a" "9763f5881428302601c109be9100290a71ab8f3ff73a8c311143f5737e4151c1"`
Dec 14 16:04:58.647 INFO [stderr] usermod: no changes
Dec 14 16:04:58.669 INFO [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
Dec 14 16:04:58.670 INFO [stderr] disables Cargo from automatically inferring other example targets.
Dec 14 16:04:58.670 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 16:04:58.670 INFO [stderr] files will be included as a example target:
Dec 14 16:04:58.670 INFO [stderr] 
Dec 14 16:04:58.670 INFO [stderr] * /source/examples/migration_index.rs
Dec 14 16:04:58.670 INFO [stderr] 
Dec 14 16:04:58.670 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 16:04:58.670 INFO [stderr] ready to be compiled as a example target today. You can future-proof yourself
Dec 14 16:04:58.670 INFO [stderr] and disable this warning by adding `autoexamples = false` to your [package]
Dec 14 16:04:58.670 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 16:04:58.670 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 16:04:58.670 INFO [stderr] 
Dec 14 16:04:58.670 INFO [stderr] For more information on this warning you can consult
Dec 14 16:04:58.670 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 16:04:58.762 INFO [stderr]    Compiling postgres-protocol v0.3.2
Dec 14 16:05:01.443 INFO [stderr]    Compiling postgres-shared v0.4.2
Dec 14 16:05:05.821 INFO [stderr]    Compiling postgres v0.15.2
Dec 14 16:05:10.639 INFO [stderr]    Compiling trek v0.3.1 (/source)
Dec 14 16:05:14.247 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.58s
Dec 14 16:05:14.254 INFO [stderr] su: No module specific data is present
Dec 14 16:05:15.104 INFO running `"docker" "inspect" "9763f5881428302601c109be9100290a71ab8f3ff73a8c311143f5737e4151c1"`
Dec 14 16:05:15.296 INFO running `"docker" "rm" "-f" "9763f5881428302601c109be9100290a71ab8f3ff73a8c311143f5737e4151c1"`
Dec 14 16:05:15.527 INFO [stdout] 9763f5881428302601c109be9100290a71ab8f3ff73a8c311143f5737e4151c1
Dec 14 16:05:15.533 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56550/worker-5/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56550/try#aa49d8ef14939ddec0e34b346b60174a5673d48f:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +aa49d8ef14939ddec0e34b346b60174a5673d48f-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 14 16:05:15.901 INFO [stdout] 1d018bd9a2851b0cec44e701645a110d39631953b4c8b8d995cbb64ce43cbb73
Dec 14 16:05:15.905 INFO running `"docker" "start" "-a" "1d018bd9a2851b0cec44e701645a110d39631953b4c8b8d995cbb64ce43cbb73"`
Dec 14 16:05:16.515 INFO [stderr] usermod: no changes
Dec 14 16:05:16.541 INFO [stderr] warning: An explicit [[example]] section is specified in Cargo.toml which currently
Dec 14 16:05:16.541 INFO [stderr] disables Cargo from automatically inferring other example targets.
Dec 14 16:05:16.541 INFO [stderr] This inference behavior will change in the Rust 2018 edition and the following
Dec 14 16:05:16.541 INFO [stderr] files will be included as a example target:
Dec 14 16:05:16.541 INFO [stderr] 
Dec 14 16:05:16.541 INFO [stderr] * /source/examples/migration_index.rs
Dec 14 16:05:16.541 INFO [stderr] 
Dec 14 16:05:16.541 INFO [stderr] This is likely to break cargo build or cargo test as these files may not be
Dec 14 16:05:16.541 INFO [stderr] ready to be compiled as a example target today. You can future-proof yourself
Dec 14 16:05:16.541 INFO [stderr] and disable this warning by adding `autoexamples = false` to your [package]
Dec 14 16:05:16.541 INFO [stderr] section. You may also move the files to a location where Cargo would not
Dec 14 16:05:16.541 INFO [stderr] automatically infer them to be a target, such as in subfolders.
Dec 14 16:05:16.541 INFO [stderr] 
Dec 14 16:05:16.541 INFO [stderr] For more information on this warning you can consult
Dec 14 16:05:16.541 INFO [stderr] https://github.com/rust-lang/cargo/issues/5330
Dec 14 16:05:16.615 INFO [stderr]    Compiling trek v0.3.1 (/source)
Dec 14 16:05:24.462 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.92s
Dec 14 16:05:24.474 INFO [stderr] su: No module specific data is present
Dec 14 16:05:25.002 INFO running `"docker" "inspect" "1d018bd9a2851b0cec44e701645a110d39631953b4c8b8d995cbb64ce43cbb73"`
Dec 14 16:05:25.248 INFO running `"docker" "rm" "-f" "1d018bd9a2851b0cec44e701645a110d39631953b4c8b8d995cbb64ce43cbb73"`
Dec 14 16:05:25.627 INFO [stdout] 1d018bd9a2851b0cec44e701645a110d39631953b4c8b8d995cbb64ce43cbb73