Dec 11 16:52:47.673 INFO checking ironlang/iron against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 11 16:52:47.673 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-0/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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 16:52:48.068 INFO [stdout] 2232a0cea13e89f3eaa91cf6512a9728d143ea0e2d72b8c9b0cba7dcfe0489bd
Dec 11 16:52:48.070 INFO running `"docker" "start" "-a" "2232a0cea13e89f3eaa91cf6512a9728d143ea0e2d72b8c9b0cba7dcfe0489bd"`
Dec 11 16:52:48.566 INFO [stderr] usermod: no changes
Dec 11 16:52:48.710 INFO [stderr]    Compiling cranelift-entity v0.25.0
Dec 11 16:52:48.720 INFO [stderr]    Compiling target-lexicon v0.2.0
Dec 11 16:52:48.722 INFO [stderr]     Checking failure v0.1.3
Dec 11 16:52:49.981 INFO [stderr]     Checking cranelift-bforest v0.25.0
Dec 11 16:52:50.292 INFO [stderr]    Compiling cranelift-codegen-meta v0.25.0
Dec 11 16:52:54.784 INFO [stderr]    Compiling cranelift-codegen v0.25.0
Dec 11 16:53:08.125 INFO [stderr]     Checking cranelift-frontend v0.25.0
Dec 11 16:53:09.192 INFO [stderr]     Checking iron v0.0.1 (/source)
Dec 11 16:53:10.876 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 16:53:10.876 INFO [stderr]  --> src/iron/codegen.rs:4:5
Dec 11 16:53:10.876 INFO [stderr]   |
Dec 11 16:53:10.876 INFO [stderr] 4 | use std::fs::File;
Dec 11 16:53:10.876 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 16:53:10.876 INFO [stderr]   |
Dec 11 16:53:10.876 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:53:10.876 INFO [stderr] 
Dec 11 16:53:10.876 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 16:53:10.876 INFO [stderr]  --> src/iron/codegen.rs:5:5
Dec 11 16:53:10.876 INFO [stderr]   |
Dec 11 16:53:10.876 INFO [stderr] 5 | use std::io::prelude::*;
Dec 11 16:53:10.876 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.876 INFO [stderr] 
Dec 11 16:53:10.876 INFO [stderr] warning: unused import: `iron::token::Token`
Dec 11 16:53:10.876 INFO [stderr]  --> src/main.rs:8:5
Dec 11 16:53:10.876 INFO [stderr]   |
Dec 11 16:53:10.877 INFO [stderr] 8 | use iron::token::Token;
Dec 11 16:53:10.877 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.877 INFO [stderr] 
Dec 11 16:53:10.877 INFO [stderr] warning: unused import: `iron::expression::Expression`
Dec 11 16:53:10.877 INFO [stderr]  --> src/main.rs:9:5
Dec 11 16:53:10.877 INFO [stderr]   |
Dec 11 16:53:10.877 INFO [stderr] 9 | use iron::expression::Expression;
Dec 11 16:53:10.877 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.877 INFO [stderr] 
Dec 11 16:53:10.944 INFO [stderr] warning: unused import: `std::fs::File`
Dec 11 16:53:10.944 INFO [stderr]  --> src/iron/codegen.rs:4:5
Dec 11 16:53:10.944 INFO [stderr]   |
Dec 11 16:53:10.944 INFO [stderr] 4 | use std::fs::File;
Dec 11 16:53:10.944 INFO [stderr]   |     ^^^^^^^^^^^^^
Dec 11 16:53:10.944 INFO [stderr]   |
Dec 11 16:53:10.945 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 11 16:53:10.945 INFO [stderr] 
Dec 11 16:53:10.945 INFO [stderr] warning: unused import: `std::io::prelude::*`
Dec 11 16:53:10.945 INFO [stderr]  --> src/iron/codegen.rs:5:5
Dec 11 16:53:10.945 INFO [stderr]   |
Dec 11 16:53:10.945 INFO [stderr] 5 | use std::io::prelude::*;
Dec 11 16:53:10.945 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.945 INFO [stderr] 
Dec 11 16:53:10.945 INFO [stderr] warning: unused import: `iron::token::Token`
Dec 11 16:53:10.945 INFO [stderr]  --> src/main.rs:8:5
Dec 11 16:53:10.945 INFO [stderr]   |
Dec 11 16:53:10.945 INFO [stderr] 8 | use iron::token::Token;
Dec 11 16:53:10.945 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.945 INFO [stderr] 
Dec 11 16:53:10.945 INFO [stderr] warning: unused import: `iron::expression::Expression`
Dec 11 16:53:10.945 INFO [stderr]  --> src/main.rs:9:5
Dec 11 16:53:10.945 INFO [stderr]   |
Dec 11 16:53:10.945 INFO [stderr] 9 | use iron::expression::Expression;
Dec 11 16:53:10.945 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 11 16:53:10.945 INFO [stderr] 
Dec 11 16:53:11.091 INFO [stderr] warning: unused variable: `source`
Dec 11 16:53:11.091 INFO [stderr]   --> src/main.rs:24:17
Dec 11 16:53:11.091 INFO [stderr]    |
Dec 11 16:53:11.091 INFO [stderr] 24 |     if let Some(source) = matches.value_of("INPUT") {
Dec 11 16:53:11.091 INFO [stderr]    |                 ^^^^^^ help: consider using `_source` instead
Dec 11 16:53:11.092 INFO [stderr]    |
Dec 11 16:53:11.092 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:53:11.092 INFO [stderr] 
Dec 11 16:53:11.146 INFO [stderr] warning: unused variable: `source`
Dec 11 16:53:11.146 INFO [stderr]   --> src/main.rs:24:17
Dec 11 16:53:11.146 INFO [stderr]    |
Dec 11 16:53:11.146 INFO [stderr] 24 |     if let Some(source) = matches.value_of("INPUT") {
Dec 11 16:53:11.146 INFO [stderr]    |                 ^^^^^^ help: consider using `_source` instead
Dec 11 16:53:11.160 INFO [stderr]    |
Dec 11 16:53:11.160 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 11 16:53:11.160 INFO [stderr] 
Dec 11 16:53:11.251 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.67s
Dec 11 16:53:11.257 INFO [stderr] su: No module specific data is present
Dec 11 16:53:12.964 INFO running `"docker" "inspect" "2232a0cea13e89f3eaa91cf6512a9728d143ea0e2d72b8c9b0cba7dcfe0489bd"`
Dec 11 16:53:13.402 INFO running `"docker" "rm" "-f" "2232a0cea13e89f3eaa91cf6512a9728d143ea0e2d72b8c9b0cba7dcfe0489bd"`
Dec 11 16:53:13.628 INFO [stdout] 2232a0cea13e89f3eaa91cf6512a9728d143ea0e2d72b8c9b0cba7dcfe0489bd