[INFO] cloning repository SpamapS/rubble [INFO] running `"git" "clone" "--bare" "git://github.com/SpamapS/rubble.git" "work/cache/sources/gh/SpamapS/rubble"` [INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/SpamapS/rubble'... [INFO] running `"git" "clone" "work/cache/sources/gh/SpamapS/rubble" "work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SpamapS/rubble"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SpamapS/rubble'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/SpamapS/rubble" "work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SpamapS/rubble"` [INFO] [stderr] Cloning into 'work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SpamapS/rubble'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 25fde6a1a3bf684dad7f34a792701ca0c3afbcf0 [INFO] sha for GitHub repo SpamapS/rubble: 25fde6a1a3bf684dad7f34a792701ca0c3afbcf0 [INFO] validating manifest of SpamapS/rubble on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of SpamapS/rubble on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing SpamapS/rubble [INFO] finished frobbing SpamapS/rubble [INFO] frobbed toml for SpamapS/rubble written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/gh/SpamapS/rubble/Cargo.toml [INFO] started frobbing SpamapS/rubble [INFO] finished frobbing SpamapS/rubble [INFO] frobbed toml for SpamapS/rubble written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SpamapS/rubble/Cargo.toml [INFO] crate SpamapS/rubble already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded caps v0.0.1 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] testing SpamapS/rubble against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-3/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/gh/SpamapS/rubble:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"` [INFO] [stdout] df1a1de34186a503d72eb2ebeec08f9458c1262fc5fb664b635ae60e6c516b15 [INFO] running `"docker" "start" "-a" "df1a1de34186a503d72eb2ebeec08f9458c1262fc5fb664b635ae60e6c516b15"` [INFO] [stderr] Compiling custom_derive v0.1.7 [INFO] [stderr] Compiling isatty v0.1.3 [INFO] [stderr] Compiling nix v0.8.0 [INFO] [stderr] Compiling thread_local v0.3.3 [INFO] [stderr] Compiling error-chain v0.8.1 [INFO] [stderr] Compiling regex v0.2.1 [INFO] [stderr] Compiling caps v0.0.1 [INFO] [stderr] Compiling env_logger v0.4.2 [INFO] [stderr] Compiling rubble v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `CLONE_NEWIPC` [INFO] [stderr] --> src/main.rs:24:73 [INFO] [stderr] | [INFO] [stderr] 24 | CLONE_NEWNS, CLONE_NEWUSER, CLONE_NEWPID, CLONE_NEWNET, CLONE_NEWIPC, CLONE_NEWUTS, [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `real_gid` [INFO] [stderr] --> src/main.rs:54:35 [INFO] [stderr] | [INFO] [stderr] 54 | fn acquire_privs(real_uid: uid_t, real_gid: uid_t) -> bool { [INFO] [stderr] | ^^^^^^^^ help: consider prefixing with an underscore: `_real_gid` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `overflow_uid` [INFO] [stderr] --> src/main.rs:341:10 [INFO] [stderr] | [INFO] [stderr] 341 | let (overflow_uid, overflow_gid) = read_overflowids(); [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_overflow_uid` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `overflow_gid` [INFO] [stderr] --> src/main.rs:341:24 [INFO] [stderr] | [INFO] [stderr] 341 | let (overflow_uid, overflow_gid) = read_overflowids(); [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_overflow_gid` [INFO] [stderr] [INFO] [stderr] warning: variable `host_tty_dev` is assigned to, but never used [INFO] [stderr] --> src/main.rs:343:13 [INFO] [stderr] | [INFO] [stderr] 343 | let mut host_tty_dev: Option = None; [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_host_tty_dev` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `host_tty_dev` is never read [INFO] [stderr] --> src/main.rs:345:9 [INFO] [stderr] | [INFO] [stderr] 345 | host_tty_dev = Some(unsafe { [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_assignments)] on by default [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `opt_sandbox_uid` [INFO] [stderr] --> src/main.rs:421:9 [INFO] [stderr] | [INFO] [stderr] 421 | let opt_sandbox_uid = match popts.sandbox_uid { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_opt_sandbox_uid` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `opt_sandbox_gid` [INFO] [stderr] --> src/main.rs:425:9 [INFO] [stderr] | [INFO] [stderr] 425 | let opt_sandbox_gid = match popts.sandbox_gid { [INFO] [stderr] | ^^^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_opt_sandbox_gid` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `proc_wd` [INFO] [stderr] --> src/main.rs:447:9 [INFO] [stderr] | [INFO] [stderr] 447 | let proc_wd = WalkDir::new("/proc"); [INFO] [stderr] | ^^^^^^^ help: consider prefixing with an underscore: `_proc_wd` [INFO] [stderr] [INFO] [stderr] warning: variable `event_fd` is assigned to, but never used [INFO] [stderr] --> src/main.rs:467:13 [INFO] [stderr] | [INFO] [stderr] 467 | let mut event_fd: Option = None; [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: consider using `_event_fd` instead [INFO] [stderr] [INFO] [stderr] warning: value assigned to `event_fd` is never read [INFO] [stderr] --> src/main.rs:469:9 [INFO] [stderr] | [INFO] [stderr] 469 | event_fd = match eventfd(0, EFD_CLOEXEC | EFD_NONBLOCK) { [INFO] [stderr] | ^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = help: maybe it is overwritten before being read? [INFO] [stderr] [INFO] [stderr] warning: unused variable: `e` [INFO] [stderr] --> src/main.rs:497:17 [INFO] [stderr] | [INFO] [stderr] 497 | Err(e) => panic!("stat on /proc/self/ns/cgroup failed"), [INFO] [stderr] | ^ help: consider prefixing with an underscore: `_e` [INFO] [stderr] [INFO] [stderr] warning: unused variable: `child_wait_fd` [INFO] [stderr] --> src/main.rs:509:9 [INFO] [stderr] | [INFO] [stderr] 509 | let child_wait_fd = match eventfd(0, EFD_CLOEXEC) { [INFO] [stderr] | ^^^^^^^^^^^^^ help: consider prefixing with an underscore: `_child_wait_fd` [INFO] [stderr] [INFO] [stderr] error: attempt to subtract with overflow [INFO] [stderr] --> src/main.rs:86:38 [INFO] [stderr] | [INFO] [stderr] 86 | let new_fsuid = setfsuid(0 - 1 as u32); [INFO] [stderr] | ^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[deny(const_err)] on by default [INFO] [stderr] [INFO] [stderr] error: aborting due to previous error [INFO] [stderr] [INFO] [stderr] error: Could not compile `rubble`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "df1a1de34186a503d72eb2ebeec08f9458c1262fc5fb664b635ae60e6c516b15"` [INFO] running `"docker" "rm" "-f" "df1a1de34186a503d72eb2ebeec08f9458c1262fc5fb664b635ae60e6c516b15"` [INFO] [stdout] df1a1de34186a503d72eb2ebeec08f9458c1262fc5fb664b635ae60e6c516b15