Nov 17 11:44:19.164 INFO testing SpamapS/rubble against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 17 11:44:19.164 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/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 +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt build --frozen" "-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"`
Nov 17 11:44:19.543 INFO [stdout] 95d2aacfcfa56d2b8555757ba5ee4ba4ea189a96020598412590fec7b13af6ab
Nov 17 11:44:19.545 INFO running `"docker" "start" "-a" "95d2aacfcfa56d2b8555757ba5ee4ba4ea189a96020598412590fec7b13af6ab"`
Nov 17 11:44:20.330 INFO [stderr] usermod: no changes
Nov 17 11:44:20.447 INFO [stderr]    Compiling syscall v0.2.1
Nov 17 11:44:20.453 INFO [stderr]    Compiling isatty v0.1.3
Nov 17 11:44:20.454 INFO [stderr]    Compiling nix v0.8.0
Nov 17 11:44:20.454 INFO [stderr]    Compiling thread_local v0.3.3
Nov 17 11:44:20.454 INFO [stderr]    Compiling error-chain v0.8.1
Nov 17 11:44:21.507 INFO [stderr]    Compiling regex v0.2.1
Nov 17 11:44:21.748 INFO [stderr]    Compiling caps v0.0.1
Nov 17 11:44:29.828 INFO [stderr]    Compiling env_logger v0.4.2
Nov 17 11:44:31.147 INFO [stderr]    Compiling rubble v0.1.0 (/source)
Nov 17 11:44:32.371 INFO [stderr] warning: unused import: `CLONE_NEWIPC`
Nov 17 11:44:32.371 INFO [stderr]   --> src/main.rs:24:73
Nov 17 11:44:32.371 INFO [stderr]    |
Nov 17 11:44:32.371 INFO [stderr] 24 |                 CLONE_NEWNS, CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_NEWIPC, CLONE_NEWUTS,
Nov 17 11:44:32.371 INFO [stderr]    |                                                                         ^^^^^^^^^^^^
Nov 17 11:44:32.371 INFO [stderr]    |
Nov 17 11:44:32.371 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Nov 17 11:44:32.371 INFO [stderr] 
Nov 17 11:44:32.484 INFO [stderr] warning: unused variable: `real_gid`
Nov 17 11:44:32.484 INFO [stderr]   --> src/main.rs:54:35
Nov 17 11:44:32.485 INFO [stderr]    |
Nov 17 11:44:32.485 INFO [stderr] 54 | fn acquire_privs(real_uid: uid_t, real_gid: uid_t) -> bool {
Nov 17 11:44:32.486 INFO [stderr]    |                                   ^^^^^^^^ help: consider using `_real_gid` instead
Nov 17 11:44:32.486 INFO [stderr]    |
Nov 17 11:44:32.491 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 17 11:44:32.492 INFO [stderr] 
Nov 17 11:44:32.492 INFO [stderr] warning: unused variable: `overflow_uid`
Nov 17 11:44:32.492 INFO [stderr]    --> src/main.rs:341:10
Nov 17 11:44:32.493 INFO [stderr]     |
Nov 17 11:44:32.493 INFO [stderr] 341 |     let (overflow_uid, overflow_gid) = read_overflowids();
Nov 17 11:44:32.493 INFO [stderr]     |          ^^^^^^^^^^^^ help: consider using `_overflow_uid` instead
Nov 17 11:44:32.494 INFO [stderr] 
Nov 17 11:44:32.494 INFO [stderr] warning: unused variable: `overflow_gid`
Nov 17 11:44:32.494 INFO [stderr]    --> src/main.rs:341:24
Nov 17 11:44:32.495 INFO [stderr]     |
Nov 17 11:44:32.495 INFO [stderr] 341 |     let (overflow_uid, overflow_gid) = read_overflowids();
Nov 17 11:44:32.495 INFO [stderr]     |                        ^^^^^^^^^^^^ help: consider using `_overflow_gid` instead
Nov 17 11:44:32.496 INFO [stderr] 
Nov 17 11:44:32.496 INFO [stderr] warning: variable `host_tty_dev` is assigned to, but never used
Nov 17 11:44:32.496 INFO [stderr]    --> src/main.rs:343:13
Nov 17 11:44:32.496 INFO [stderr]     |
Nov 17 11:44:32.497 INFO [stderr] 343 |     let mut host_tty_dev: Option<String> = None;
Nov 17 11:44:32.497 INFO [stderr]     |             ^^^^^^^^^^^^
Nov 17 11:44:32.498 INFO [stderr]     |
Nov 17 11:44:32.498 INFO [stderr]     = note: consider using `_host_tty_dev` instead
Nov 17 11:44:32.498 INFO [stderr] 
Nov 17 11:44:32.498 INFO [stderr] warning: value assigned to `host_tty_dev` is never read
Nov 17 11:44:32.499 INFO [stderr]    --> src/main.rs:345:9
Nov 17 11:44:32.499 INFO [stderr]     |
Nov 17 11:44:32.499 INFO [stderr] 345 |         host_tty_dev = Some(unsafe {
Nov 17 11:44:32.500 INFO [stderr]     |         ^^^^^^^^^^^^
Nov 17 11:44:32.500 INFO [stderr]     |
Nov 17 11:44:32.500 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 17 11:44:32.501 INFO [stderr] 
Nov 17 11:44:32.501 INFO [stderr] warning: unused variable: `opt_sandbox_uid`
Nov 17 11:44:32.501 INFO [stderr]    --> src/main.rs:421:9
Nov 17 11:44:32.502 INFO [stderr]     |
Nov 17 11:44:32.502 INFO [stderr] 421 |     let opt_sandbox_uid = match popts.sandbox_uid {
Nov 17 11:44:32.502 INFO [stderr]     |         ^^^^^^^^^^^^^^^ help: consider using `_opt_sandbox_uid` instead
Nov 17 11:44:32.503 INFO [stderr] 
Nov 17 11:44:32.503 INFO [stderr] warning: unused variable: `opt_sandbox_gid`
Nov 17 11:44:32.503 INFO [stderr]    --> src/main.rs:425:9
Nov 17 11:44:32.504 INFO [stderr]     |
Nov 17 11:44:32.504 INFO [stderr] 425 |     let opt_sandbox_gid = match popts.sandbox_gid {
Nov 17 11:44:32.504 INFO [stderr]     |         ^^^^^^^^^^^^^^^ help: consider using `_opt_sandbox_gid` instead
Nov 17 11:44:32.505 INFO [stderr] 
Nov 17 11:44:32.505 INFO [stderr] warning: unused variable: `proc_wd`
Nov 17 11:44:32.505 INFO [stderr]    --> src/main.rs:447:9
Nov 17 11:44:32.506 INFO [stderr]     |
Nov 17 11:44:32.506 INFO [stderr] 447 |     let proc_wd = WalkDir::new("/proc");
Nov 17 11:44:32.506 INFO [stderr]     |         ^^^^^^^ help: consider using `_proc_wd` instead
Nov 17 11:44:32.507 INFO [stderr] 
Nov 17 11:44:32.507 INFO [stderr] warning: variable `event_fd` is assigned to, but never used
Nov 17 11:44:32.507 INFO [stderr]    --> src/main.rs:467:13
Nov 17 11:44:32.508 INFO [stderr]     |
Nov 17 11:44:32.508 INFO [stderr] 467 |     let mut event_fd: Option<i32> = None;
Nov 17 11:44:32.508 INFO [stderr]     |             ^^^^^^^^
Nov 17 11:44:32.508 INFO [stderr]     |
Nov 17 11:44:32.509 INFO [stderr]     = note: consider using `_event_fd` instead
Nov 17 11:44:32.509 INFO [stderr] 
Nov 17 11:44:32.509 INFO [stderr] warning: value assigned to `event_fd` is never read
Nov 17 11:44:32.510 INFO [stderr]    --> src/main.rs:469:9
Nov 17 11:44:32.510 INFO [stderr]     |
Nov 17 11:44:32.510 INFO [stderr] 469 |         event_fd = match eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK) {
Nov 17 11:44:32.511 INFO [stderr]     |         ^^^^^^^^
Nov 17 11:44:32.511 INFO [stderr] 
Nov 17 11:44:32.511 INFO [stderr] warning: unused variable: `e`
Nov 17 11:44:32.512 INFO [stderr]    --> src/main.rs:497:17
Nov 17 11:44:32.512 INFO [stderr]     |
Nov 17 11:44:32.512 INFO [stderr] 497 |             Err(e) => panic!("stat on /proc/self/ns/cgroup failed"),
Nov 17 11:44:32.513 INFO [stderr]     |                 ^ help: consider using `_e` instead
Nov 17 11:44:32.513 INFO [stderr] 
Nov 17 11:44:32.513 INFO [stderr] warning: unused variable: `child_wait_fd`
Nov 17 11:44:32.514 INFO [stderr]    --> src/main.rs:509:9
Nov 17 11:44:32.514 INFO [stderr]     |
Nov 17 11:44:32.514 INFO [stderr] 509 |     let child_wait_fd = match eventfd(0, EFD_CLOEXEC) {
Nov 17 11:44:32.515 INFO [stderr]     |         ^^^^^^^^^^^^^ help: consider using `_child_wait_fd` instead
Nov 17 11:44:32.515 INFO [stderr] 
Nov 17 11:44:32.560 INFO [stderr] error: attempt to subtract with overflow
Nov 17 11:44:32.560 INFO [stderr]   --> src/main.rs:86:38
Nov 17 11:44:32.560 INFO [stderr]    |
Nov 17 11:44:32.561 INFO [stderr] 86 |             let new_fsuid = setfsuid(0 - 1 as u32);
Nov 17 11:44:32.561 INFO [stderr]    |                                      ^^^^^^^^^^^^
Nov 17 11:44:32.561 INFO [stderr]    |
Nov 17 11:44:32.562 INFO [stderr]    = note: #[deny(const_err)] on by default
Nov 17 11:44:32.562 INFO [stderr] 
Nov 17 11:44:32.691 INFO [stderr] error: aborting due to previous error
Nov 17 11:44:32.691 INFO [stderr] 
Nov 17 11:44:32.700 INFO [stderr] error: Could not compile `rubble`.
Nov 17 11:44:32.700 INFO [stderr] 
Nov 17 11:44:32.700 INFO [stderr] To learn more, run the command again with --verbose.
Nov 17 11:44:32.708 INFO [stderr] su: No module specific data is present
Nov 17 11:44:33.305 INFO running `"docker" "inspect" "95d2aacfcfa56d2b8555757ba5ee4ba4ea189a96020598412590fec7b13af6ab"`
Nov 17 11:44:33.695 INFO running `"docker" "rm" "-f" "95d2aacfcfa56d2b8555757ba5ee4ba4ea189a96020598412590fec7b13af6ab"`
Nov 17 11:44:33.938 INFO [stdout] 95d2aacfcfa56d2b8555757ba5ee4ba4ea189a96020598412590fec7b13af6ab