[INFO] updating cached repository ANtlord/system_ladder
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ANtlord/system_ladder
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ANtlord/system_ladder" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ANtlord/system_ladder'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ANtlord/system_ladder" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a62d11a6103840582855bd5fdd765b5ec179a3e1
[INFO] sha for GitHub repo ANtlord/system_ladder: a62d11a6103840582855bd5fdd765b5ec179a3e1
[INFO] validating manifest of ANtlord/system_ladder on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ANtlord/system_ladder on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ANtlord/system_ladder
[INFO] finished frobbing ANtlord/system_ladder
[INFO] frobbed toml for ANtlord/system_ladder written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ANtlord/system_ladder/Cargo.toml
[INFO] started frobbing ANtlord/system_ladder
[INFO] finished frobbing ANtlord/system_ladder
[INFO] frobbed toml for ANtlord/system_ladder written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder/Cargo.toml
[INFO] crate ANtlord/system_ladder has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ANtlord/system_ladder against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 0f47a7a1ed18c16f5a7a41c0ea641cd032838ee78382543b40fc633c6499b097
[INFO] running `"docker" "start" "-a" "0f47a7a1ed18c16f5a7a41c0ea641cd032838ee78382543b40fc633c6499b097"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::any::TypeId;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `point` should have a camel case name
[INFO] [stderr]   --> src/main.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct point(i32, i32);
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to camel case: `Point`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/main.rs:42:20
[INFO] [stderr]    |
[INFO] [stderr] 42 |         fn callee2(a: i32, b: i32) {
[INFO] [stderr]    |                    ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:42:28
[INFO] [stderr]    |
[INFO] [stderr] 42 |         fn callee2(a: i32, b: i32) {
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/main.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 |         fn callee(self, a: i32, b: i32) {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:48:33
[INFO] [stderr]    |
[INFO] [stderr] 48 |         fn callee(self, a: i32, b: i32) {
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
[INFO] running `"docker" "inspect" "0f47a7a1ed18c16f5a7a41c0ea641cd032838ee78382543b40fc633c6499b097"`
[INFO] running `"docker" "rm" "-f" "0f47a7a1ed18c16f5a7a41c0ea641cd032838ee78382543b40fc633c6499b097"`
[INFO] [stdout] 0f47a7a1ed18c16f5a7a41c0ea641cd032838ee78382543b40fc633c6499b097
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] 54e76959d17cd378d3124ede5750436125a8901d65f4e9b440d187612a62d6ef
[INFO] running `"docker" "start" "-a" "54e76959d17cd378d3124ede5750436125a8901d65f4e9b440d187612a62d6ef"`
[INFO] [stderr]    Compiling system_ladder v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::any::TypeId`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::any::TypeId;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `point` should have a camel case name
[INFO] [stderr]   --> src/main.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 | struct point(i32, i32);
[INFO] [stderr]    |        ^^^^^ help: convert the identifier to camel case: `Point`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(non_camel_case_types)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/main.rs:42:20
[INFO] [stderr]    |
[INFO] [stderr] 42 |         fn callee2(a: i32, b: i32) {
[INFO] [stderr]    |                    ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:42:28
[INFO] [stderr]    |
[INFO] [stderr] 42 |         fn callee2(a: i32, b: i32) {
[INFO] [stderr]    |                            ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]   --> src/main.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 |         fn callee(self, a: i32, b: i32) {
[INFO] [stderr]    |                         ^ help: consider prefixing with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]   --> src/main.rs:48:33
[INFO] [stderr]    |
[INFO] [stderr] 48 |         fn callee(self, a: i32, b: i32) {
[INFO] [stderr]    |                                 ^ help: consider prefixing with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `"docker" "inspect" "54e76959d17cd378d3124ede5750436125a8901d65f4e9b440d187612a62d6ef"`
[INFO] running `"docker" "rm" "-f" "54e76959d17cd378d3124ede5750436125a8901d65f4e9b440d187612a62d6ef"`
[INFO] [stdout] 54e76959d17cd378d3124ede5750436125a8901d65f4e9b440d187612a62d6ef
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-0/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ANtlord/system_ladder:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] 1b556b9bb77b3bba16f308dbcaad3561ead648e4c444994951e1baeb6afbf632
[INFO] running `"docker" "start" "-a" "1b556b9bb77b3bba16f308dbcaad3561ead648e4c444994951e1baeb6afbf632"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/system_ladder-bbdb3342f3749c21
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "1b556b9bb77b3bba16f308dbcaad3561ead648e4c444994951e1baeb6afbf632"`
[INFO] running `"docker" "rm" "-f" "1b556b9bb77b3bba16f308dbcaad3561ead648e4c444994951e1baeb6afbf632"`
[INFO] [stdout] 1b556b9bb77b3bba16f308dbcaad3561ead648e4c444994951e1baeb6afbf632