Dec 04 17:08:36.831 INFO checking ironlang/iron against try#1df97983eb2057dc6a8f7eb364e263b51ae23230 for pr-56481
Dec 04 17:08:36.831 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-4/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56481/try#1df97983eb2057dc6a8f7eb364e263b51ae23230:/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 +1df97983eb2057dc6a8f7eb364e263b51ae23230-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 04 17:08:37.274 INFO [stdout] 98419c24a5cefd06ce3d3227a1c31160723122a617aa16a9e18b05d807dd59f4
Dec 04 17:08:37.276 INFO running `"docker" "start" "-a" "98419c24a5cefd06ce3d3227a1c31160723122a617aa16a9e18b05d807dd59f4"`
Dec 04 17:08:38.081 INFO [stderr] usermod: no changes
Dec 04 17:08:38.267 INFO [stderr]    Compiling cranelift-entity v0.25.0
Dec 04 17:08:38.269 INFO [stderr]    Compiling ryu v0.2.7
Dec 04 17:08:38.269 INFO [stderr]     Checking failure v0.1.3
Dec 04 17:08:39.402 INFO [stderr]    Compiling serde_json v1.0.33
Dec 04 17:08:40.194 INFO [stderr]    Compiling cranelift-codegen-meta v0.25.0
Dec 04 17:08:40.254 INFO [stderr]     Checking cranelift-bforest v0.25.0
Dec 04 17:08:45.072 INFO [stderr]    Compiling cranelift-codegen v0.25.0
Dec 04 17:08:50.412 INFO [stderr]    Compiling target-lexicon v0.2.0
Dec 04 17:09:04.060 INFO [stderr]     Checking cranelift-frontend v0.25.0
Dec 04 17:09:05.099 INFO [stderr]     Checking iron v0.0.1 (/source)
Dec 04 17:09:06.568 INFO [stderr] warning: unused import: `std::fs::File`
Dec 04 17:09:06.569 INFO [stderr]  --> src/iron/codegen.rs:4:5
Dec 04 17:09:06.569 INFO [stderr]   |
Dec 04 17:09:06.569 INFO [stderr] 4 | use std::fs::File;
Dec 04 17:09:06.570 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 17:09:06.570 INFO [stderr]   |
Dec 04 17:09:06.570 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 17:09:06.571 INFO [stderr] 
Dec 04 17:09:06.571 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 04 17:09:06.571 INFO [stderr]  --> src/iron/codegen.rs:5:5
Dec 04 17:09:06.572 INFO [stderr]   |
Dec 04 17:09:06.572 INFO [stderr] 5 | use std::io::prelude::*;
Dec 04 17:09:06.572 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.573 INFO [stderr] 
Dec 04 17:09:06.574 INFO [stderr] warning: unused import: `iron::token::Token`
Dec 04 17:09:06.574 INFO [stderr]  --> src/main.rs:8:5
Dec 04 17:09:06.574 INFO [stderr]   |
Dec 04 17:09:06.575 INFO [stderr] 8 | use iron::token::Token;
Dec 04 17:09:06.575 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.575 INFO [stderr] 
Dec 04 17:09:06.576 INFO [stderr] warning: unused import: `iron::expression::Expression`
Dec 04 17:09:06.576 INFO [stderr]  --> src/main.rs:9:5
Dec 04 17:09:06.576 INFO [stderr]   |
Dec 04 17:09:06.577 INFO [stderr] 9 | use iron::expression::Expression;
Dec 04 17:09:06.577 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.577 INFO [stderr] 
Dec 04 17:09:06.671 INFO [stderr] warning: unused import: `std::fs::File`
Dec 04 17:09:06.671 INFO [stderr]  --> src/iron/codegen.rs:4:5
Dec 04 17:09:06.671 INFO [stderr]   |
Dec 04 17:09:06.671 INFO [stderr] 4 | use std::fs::File;
Dec 04 17:09:06.671 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 04 17:09:06.671 INFO [stderr]   |
Dec 04 17:09:06.671 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 04 17:09:06.671 INFO [stderr] 
Dec 04 17:09:06.671 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 04 17:09:06.672 INFO [stderr]  --> src/iron/codegen.rs:5:5
Dec 04 17:09:06.672 INFO [stderr]   |
Dec 04 17:09:06.672 INFO [stderr] 5 | use std::io::prelude::*;
Dec 04 17:09:06.672 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.672 INFO [stderr] 
Dec 04 17:09:06.672 INFO [stderr] warning: unused import: `iron::token::Token`
Dec 04 17:09:06.672 INFO [stderr]  --> src/main.rs:8:5
Dec 04 17:09:06.672 INFO [stderr]   |
Dec 04 17:09:06.673 INFO [stderr] 8 | use iron::token::Token;
Dec 04 17:09:06.673 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.673 INFO [stderr] 
Dec 04 17:09:06.673 INFO [stderr] warning: unused import: `iron::expression::Expression`
Dec 04 17:09:06.673 INFO [stderr]  --> src/main.rs:9:5
Dec 04 17:09:06.673 INFO [stderr]   |
Dec 04 17:09:06.673 INFO [stderr] 9 | use iron::expression::Expression;
Dec 04 17:09:06.673 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 17:09:06.673 INFO [stderr] 
Dec 04 17:09:06.821 INFO [stderr] warning: unused variable: `source`
Dec 04 17:09:06.821 INFO [stderr]   --> src/main.rs:24:17
Dec 04 17:09:06.821 INFO [stderr]    |
Dec 04 17:09:06.821 INFO [stderr] 24 |     if let Some(source) = matches.value_of("INPUT") {
Dec 04 17:09:06.821 INFO [stderr]    |                 ^^^^^^ help: consider using `_source` instead
Dec 04 17:09:06.821 INFO [stderr]    |
Dec 04 17:09:06.831 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 17:09:06.831 INFO [stderr] 
Dec 04 17:09:06.869 INFO [stderr] warning: unused variable: `source`
Dec 04 17:09:06.869 INFO [stderr]   --> src/main.rs:24:17
Dec 04 17:09:06.869 INFO [stderr]    |
Dec 04 17:09:06.869 INFO [stderr] 24 |     if let Some(source) = matches.value_of("INPUT") {
Dec 04 17:09:06.869 INFO [stderr]    |                 ^^^^^^ help: consider using `_source` instead
Dec 04 17:09:06.869 INFO [stderr]    |
Dec 04 17:09:06.869 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 17:09:06.869 INFO [stderr] 
Dec 04 17:09:07.010 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 28.89s
Dec 04 17:09:07.023 INFO [stderr] su: No module specific data is present
Dec 04 17:09:08.489 INFO running `"docker" "inspect" "98419c24a5cefd06ce3d3227a1c31160723122a617aa16a9e18b05d807dd59f4"`
Dec 04 17:09:08.796 INFO running `"docker" "rm" "-f" "98419c24a5cefd06ce3d3227a1c31160723122a617aa16a9e18b05d807dd59f4"`
Dec 04 17:09:09.120 INFO [stdout] 98419c24a5cefd06ce3d3227a1c31160723122a617aa16a9e18b05d807dd59f4