Dec 11 12:34:50.070 INFO checking nojima/qurl against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 12:34:50.070 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-3/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-3/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-alt check --frozen --all --all-targets" "-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 11 12:34:50.379 INFO [stdout] cdc273cf3e09d7511d1162ff65d7e971cdce63910d659ea39fdf0e7ff04c5769
Dec 11 12:34:50.382 INFO running `"docker" "start" "-a" "cdc273cf3e09d7511d1162ff65d7e971cdce63910d659ea39fdf0e7ff04c5769"`
Dec 11 12:34:50.825 INFO [stderr] usermod: no changes
Dec 11 12:34:50.961 INFO [stderr]     Checking hyper v0.12.13
Dec 11 12:34:55.880 INFO [stderr]     Checking qurl v0.1.0 (/source)
Dec 11 12:34:57.600 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.600 INFO [stderr]   --> src/yaml_to_json.rs:71:13
Dec 11 12:34:57.600 INFO [stderr]    |
Dec 11 12:34:57.600 INFO [stderr] 71 |             write!(out, "{}", real);
Dec 11 12:34:57.600 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.600 INFO [stderr]    |
Dec 11 12:34:57.600 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 12:34:57.600 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.600 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.600 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:74:13
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr] 74 |             write!(out, "{}", integer);
Dec 11 12:34:57.604 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.604 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.604 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:80:13
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr] 80 |             write!(out, "{}", boolean);
Dec 11 12:34:57.604 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.604 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.604 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:83:13
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr] 83 |             write!(out, "[");
Dec 11 12:34:57.604 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.604 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.604 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:90:21
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr] 90 |                     write!(out, ",");
Dec 11 12:34:57.604 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.604 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.604 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:95:13
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr] 95 |             write!(out, "]");
Dec 11 12:34:57.604 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.604 INFO [stderr]    |
Dec 11 12:34:57.604 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.604 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.604 INFO [stderr] 
Dec 11 12:34:57.604 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.604 INFO [stderr]   --> src/yaml_to_json.rs:98:13
Dec 11 12:34:57.608 INFO [stderr]    |
Dec 11 12:34:57.608 INFO [stderr] 98 |             write!(out, "{{");
Dec 11 12:34:57.608 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.608 INFO [stderr]    |
Dec 11 12:34:57.608 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.608 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.608 INFO [stderr] 
Dec 11 12:34:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.608 INFO [stderr]    --> src/yaml_to_json.rs:105:21
Dec 11 12:34:57.608 INFO [stderr]     |
Dec 11 12:34:57.608 INFO [stderr] 105 |                     write!(out, ",");
Dec 11 12:34:57.608 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.608 INFO [stderr]     |
Dec 11 12:34:57.608 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.608 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.608 INFO [stderr] 
Dec 11 12:34:57.608 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.608 INFO [stderr]    --> src/yaml_to_json.rs:109:21
Dec 11 12:34:57.608 INFO [stderr]     |
Dec 11 12:34:57.608 INFO [stderr] 109 |                     write!(out, ":");
Dec 11 12:34:57.608 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.608 INFO [stderr]     |
Dec 11 12:34:57.609 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.610 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.611 INFO [stderr] 
Dec 11 12:34:57.611 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.611 INFO [stderr]    --> src/yaml_to_json.rs:115:13
Dec 11 12:34:57.611 INFO [stderr]     |
Dec 11 12:34:57.611 INFO [stderr] 115 |             write!(out, "}}");
Dec 11 12:34:57.611 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.611 INFO [stderr]     |
Dec 11 12:34:57.611 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.611 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.611 INFO [stderr] 
Dec 11 12:34:57.611 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.611 INFO [stderr]    --> src/yaml_to_json.rs:118:13
Dec 11 12:34:57.611 INFO [stderr]     |
Dec 11 12:34:57.611 INFO [stderr] 118 |             write!(out, "null");
Dec 11 12:34:57.611 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.611 INFO [stderr]     |
Dec 11 12:34:57.611 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.611 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.611 INFO [stderr] 
Dec 11 12:34:57.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.684 INFO [stderr]   --> src/yaml_to_json.rs:71:13
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr] 71 |             write!(out, "{}", real);
Dec 11 12:34:57.684 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 11 12:34:57.684 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.684 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.684 INFO [stderr] 
Dec 11 12:34:57.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.684 INFO [stderr]   --> src/yaml_to_json.rs:74:13
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr] 74 |             write!(out, "{}", integer);
Dec 11 12:34:57.684 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.684 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.684 INFO [stderr] 
Dec 11 12:34:57.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.684 INFO [stderr]   --> src/yaml_to_json.rs:80:13
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr] 80 |             write!(out, "{}", boolean);
Dec 11 12:34:57.684 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.684 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.684 INFO [stderr] 
Dec 11 12:34:57.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.684 INFO [stderr]   --> src/yaml_to_json.rs:83:13
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr] 83 |             write!(out, "[");
Dec 11 12:34:57.684 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.684 INFO [stderr]    |
Dec 11 12:34:57.684 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.684 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.684 INFO [stderr] 
Dec 11 12:34:57.684 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]   --> src/yaml_to_json.rs:90:21
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr] 90 |                     write!(out, ",");
Dec 11 12:34:57.685 INFO [stderr]    |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]   --> src/yaml_to_json.rs:95:13
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr] 95 |             write!(out, "]");
Dec 11 12:34:57.685 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]   --> src/yaml_to_json.rs:98:13
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr] 98 |             write!(out, "{{");
Dec 11 12:34:57.685 INFO [stderr]    |             ^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]    |
Dec 11 12:34:57.685 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]    = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]    --> src/yaml_to_json.rs:105:21
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr] 105 |                     write!(out, ",");
Dec 11 12:34:57.685 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]    --> src/yaml_to_json.rs:109:21
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr] 109 |                     write!(out, ":");
Dec 11 12:34:57.685 INFO [stderr]     |                     ^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]    --> src/yaml_to_json.rs:115:13
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr] 115 |             write!(out, "}}");
Dec 11 12:34:57.685 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.685 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 11 12:34:57.685 INFO [stderr]    --> src/yaml_to_json.rs:118:13
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr] 118 |             write!(out, "null");
Dec 11 12:34:57.685 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^
Dec 11 12:34:57.685 INFO [stderr]     |
Dec 11 12:34:57.685 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 11 12:34:57.685 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Dec 11 12:34:57.685 INFO [stderr] 
Dec 11 12:34:57.708 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.87s
Dec 11 12:34:57.716 INFO [stderr] su: No module specific data is present
Dec 11 12:34:58.062 INFO running `"docker" "inspect" "cdc273cf3e09d7511d1162ff65d7e971cdce63910d659ea39fdf0e7ff04c5769"`
Dec 11 12:34:58.114 INFO running `"docker" "rm" "-f" "cdc273cf3e09d7511d1162ff65d7e971cdce63910d659ea39fdf0e7ff04c5769"`
Dec 11 12:34:58.186 INFO [stdout] cdc273cf3e09d7511d1162ff65d7e971cdce63910d659ea39fdf0e7ff04c5769