[INFO] updating cached repository https://github.com/edidada/iron
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/edidada/iron
[INFO] [stderr]    bf1f7e2..5ad0101  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5ad0101fc83ab12f37d5b1c119dd31325eb85a8a
[INFO] checking edidada/iron against master#30ca215b4e38b32aa7abdd635c5e2d56f5724494 for pr-66037
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fedidada%2Firon" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/edidada/iron on toolchain 30ca215b4e38b32aa7abdd635c5e2d56f5724494
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/edidada/iron
[INFO] finished tweaking git repo https://github.com/edidada/iron
[INFO] tweaked toml for git repo https://github.com/edidada/iron written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/edidada/iron already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+30ca215b4e38b32aa7abdd635c5e2d56f5724494" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] e6c5f4966493ae957f4e687bc172ed574508cbcabf69a39dd4ada05a24bd91b1
[INFO] running `"docker" "start" "-a" "e6c5f4966493ae957f4e687bc172ed574508cbcabf69a39dd4ada05a24bd91b1"`
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking mime_guess v1.8.6
[INFO] [stderr]     Checking iron v0.6.0
[INFO] [stderr]     Checking router v0.6.0
[INFO] [stderr]     Checking testiron v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `vs`
[INFO] [stderr]   --> adder/src/lib.rs:64:13
[INFO] [stderr]    |
[INFO] [stderr] 64 |         let vs: Vec<i32> = Vec::new();
[INFO] [stderr]    |             ^^ help: consider prefixing with an underscore: `_vs`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `aaaaaaaaa`
[INFO] [stderr]    --> adder/src/lib.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |         let aaaaaaaaa = vec![1, 2, 3, 4, 5];
[INFO] [stderr]     |             ^^^^^^^^^ help: consider prefixing with an underscore: `_aaaaaaaaa`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `log::Level`
[INFO] [stderr]  --> tests/integration_test.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use log::Level;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::prelude::*`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use iron::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::status`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use iron::status;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `router::Router`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use router::Router;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rustc_serialize::json`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use rustc_serialize::json;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::prelude::*`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use iron::prelude::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IronResult`, `Iron`, `Request`, `Response`
[INFO] [stderr]   --> src/main.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | use iron::{Iron, Request, Response, IronResult};
[INFO] [stderr]    |            ^^^^  ^^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `iron::status`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use iron::status;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `router::Router`
[INFO] [stderr]   --> src/main.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 | use router::Router;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rustc_serialize::json`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use rustc_serialize::json;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `IronResult`, `Iron`, `Request`, `Response`
[INFO] [stderr]   --> src/main.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | use iron::{Iron, Request, Response, IronResult};
[INFO] [stderr]    |            ^^^^  ^^^^^^^  ^^^^^^^^  ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `East`
[INFO] [stderr]  --> src/methodsee.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     East,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `West`
[INFO] [stderr]  --> src/methodsee.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     West,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `North`
[INFO] [stderr]  --> src/methodsee.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     North,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `map_update`
[INFO] [stderr]   --> src/methodsee.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn map_update(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `East`
[INFO] [stderr]  --> src/methodsee.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 |     East,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `West`
[INFO] [stderr]  --> src/methodsee.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 |     West,
[INFO] [stderr]   |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `North`
[INFO] [stderr]  --> src/methodsee.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     North,
[INFO] [stderr]   |     ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `map_update`
[INFO] [stderr]   --> src/methodsee.rs:72:4
[INFO] [stderr]    |
[INFO] [stderr] 72 | fn map_update(){
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 17.48s
[INFO] running `"docker" "inspect" "e6c5f4966493ae957f4e687bc172ed574508cbcabf69a39dd4ada05a24bd91b1"`
[INFO] running `"docker" "rm" "-f" "e6c5f4966493ae957f4e687bc172ed574508cbcabf69a39dd4ada05a24bd91b1"`
[INFO] [stdout] e6c5f4966493ae957f4e687bc172ed574508cbcabf69a39dd4ada05a24bd91b1