[INFO] fetching crate mhost 0.3.0-alpha.1... [INFO] checking mhost-0.3.0-alpha.1 against master#4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 for pr-81174 [INFO] extracting crate mhost 0.3.0-alpha.1 into /workspace/builds/worker-6/source [INFO] validating manifest of crates.io crate mhost 0.3.0-alpha.1 on toolchain 4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate mhost 0.3.0-alpha.1 [INFO] finished tweaking crates.io crate mhost 0.3.0-alpha.1 [INFO] tweaked toml for crates.io crate mhost 0.3.0-alpha.1 written to /workspace/builds/worker-6/source/Cargo.toml [INFO] crate crates.io crate mhost 0.3.0-alpha.1 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c086df98ea3ebd46903ec46f68a6b8f2307091ee49e3c3423644a95add54fc60 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "c086df98ea3ebd46903ec46f68a6b8f2307091ee49e3c3423644a95add54fc60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c086df98ea3ebd46903ec46f68a6b8f2307091ee49e3c3423644a95add54fc60", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c086df98ea3ebd46903ec46f68a6b8f2307091ee49e3c3423644a95add54fc60", kill_on_drop: false }` [INFO] [stdout] c086df98ea3ebd46903ec46f68a6b8f2307091ee49e3c3423644a95add54fc60 [INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:21f1ed92105a0ef9b0d27ad8bdeb7f36f9f01ac17fffe3a3f3dc5241fc25d8f4" "/opt/rustwide/cargo-home/bin/cargo" "+4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] aeaaa1d78ecbd9e283b5da60151703f0b952d7e56191b9e065673bce56a4f413 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "aeaaa1d78ecbd9e283b5da60151703f0b952d7e56191b9e065673bce56a4f413", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.82 [INFO] [stderr] Compiling proc-macro2 v1.0.24 [INFO] [stderr] Compiling autocfg v1.0.1 [INFO] [stderr] Compiling unicode-xid v0.2.1 [INFO] [stderr] Compiling syn v1.0.58 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking cfg-if v0.1.10 [INFO] [stderr] Compiling log v0.4.13 [INFO] [stderr] Checking pin-project-lite v0.2.4 [INFO] [stderr] Checking futures-core v0.3.12 [INFO] [stderr] Compiling serde_derive v1.0.120 [INFO] [stderr] Checking bytes v1.0.1 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling serde v1.0.120 [INFO] [stderr] Compiling proc-macro-nested v0.1.7 [INFO] [stderr] Checking futures-sink v0.3.12 [INFO] [stderr] Checking untrusted v0.7.1 [INFO] [stderr] Checking spin v0.5.2 [INFO] [stderr] Compiling getrandom v0.2.1 [INFO] [stderr] Checking slab v0.4.2 [INFO] [stderr] Checking pin-utils v0.1.0 [INFO] [stderr] Checking futures-io v0.3.12 [INFO] [stderr] Checking matches v0.1.8 [INFO] [stderr] Compiling pin-project-internal v0.4.27 [INFO] [stderr] Checking tinyvec_macros v0.1.0 [INFO] [stderr] Checking percent-encoding v2.1.0 [INFO] [stderr] Compiling ryu v1.0.5 [INFO] [stderr] Checking base64 v0.13.0 [INFO] [stderr] Compiling unicode-segmentation v1.7.1 [INFO] [stderr] Checking data-encoding v2.3.1 [INFO] [stderr] Checking ipnet v2.3.0 [INFO] [stderr] Compiling httparse v1.3.4 [INFO] [stderr] Checking try-lock v0.2.3 [INFO] [stderr] Compiling unicode-width v0.1.8 [INFO] [stderr] Compiling encoding_rs v0.8.26 [INFO] [stderr] Checking quick-error v1.2.3 [INFO] [stderr] Checking rustc-serialize v0.3.24 [INFO] [stderr] Compiling strsim v0.8.0 [INFO] [stderr] Compiling lexical-core v0.7.4 [INFO] [stderr] Compiling vec_map v0.8.2 [INFO] [stderr] Checking tower-service v0.3.0 [INFO] [stderr] Compiling ansi_term v0.11.0 [INFO] [stderr] Checking linked-hash-map v0.5.4 [INFO] [stderr] Checking httpdate v0.3.2 [INFO] [stderr] Checking static_assertions v1.1.0 [INFO] [stderr] Checking arrayvec v0.5.2 [INFO] [stderr] Compiling anyhow v1.0.38 [INFO] [stderr] Checking object v0.22.0 [INFO] [stderr] Checking mime v0.3.16 [INFO] [stderr] Checking ansi_term v0.12.1 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking lru_time_cache v0.11.4 [INFO] [stderr] Checking either v1.6.1 [INFO] [stderr] Checking remove_dir_all v0.5.3 [INFO] [stderr] Checking tracing-core v0.1.17 [INFO] [stderr] Checking futures-task v0.3.12 [INFO] [stderr] Checking thread_local v1.1.0 [INFO] [stderr] Checking sharded-slab v0.1.1 [INFO] [stderr] Checking lock_api v0.4.2 [INFO] [stderr] Compiling ring v0.16.19 [INFO] [stderr] Checking instant v0.1.9 [INFO] [stderr] Checking futures-channel v0.3.12 [INFO] [stderr] Checking unicode-bidi v0.3.4 [INFO] [stderr] Checking tinyvec v1.1.0 [INFO] [stderr] Compiling nom v5.1.2 [INFO] [stderr] Checking form_urlencoded v1.0.0 [INFO] [stderr] Checking tabwriter v1.2.1 [INFO] [stderr] Checking regex-automata v0.1.9 [INFO] [stderr] Checking http v0.2.3 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling heck v0.3.2 [INFO] [stderr] Checking lru-cache v0.1.2 [INFO] [stderr] Compiling tokio v1.0.2 [INFO] [stderr] Compiling num-traits v0.2.14 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling indexmap v1.6.1 [INFO] [stderr] Compiling miniz_oxide v0.4.3 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Checking itertools v0.9.0 [INFO] [stderr] Compiling bitflags v1.2.1 [INFO] [stderr] Checking want v0.3.0 [INFO] [stderr] Checking tracing-log v0.1.1 [INFO] [stderr] Checking regex v1.4.3 [INFO] [stderr] Compiling quote v1.0.8 [INFO] [stderr] Checking unicode-normalization v0.1.16 [INFO] [stderr] Checking matchers v0.0.1 [INFO] [stderr] Checking parking_lot_core v0.8.2 [INFO] [stderr] Checking mio v0.7.7 [INFO] [stderr] Checking signal-hook-registry v1.3.0 [INFO] [stderr] Checking num_cpus v1.13.0 [INFO] [stderr] Checking hostname v0.3.1 [INFO] [stderr] Checking socket2 v0.3.19 [INFO] [stderr] Checking time v0.1.43 [INFO] [stderr] Checking rand v0.4.6 [INFO] [stderr] Checking atty v0.2.14 [INFO] [stderr] Checking dirs-sys v0.3.5 [INFO] [stderr] Checking parking_lot v0.11.1 [INFO] [stderr] Checking idna v0.2.0 [INFO] [stderr] Checking resolv-conf v0.7.0 [INFO] [stderr] Checking rand_core v0.6.1 [INFO] [stderr] Checking clap v2.33.3 [INFO] [stderr] Checking num-complex v0.1.43 [INFO] [stderr] Checking dirs v2.0.2 [INFO] [stderr] Checking http-body v0.4.0 [INFO] [stderr] Checking backtrace v0.3.55 [INFO] [stderr] Checking rand_chacha v0.3.0 [INFO] [stderr] Checking term v0.6.1 [INFO] [stderr] Checking rand v0.8.2 [INFO] [stderr] Checking num-bigint v0.1.44 [INFO] [stderr] Checking error-chain v0.12.4 [INFO] [stderr] Checking url v2.2.0 [INFO] [stderr] Checking tempfile v3.2.0 [INFO] [stderr] Checking num-rational v0.1.42 [INFO] [stderr] Checking webpki v0.21.4 [INFO] [stderr] Checking sct v0.6.0 [INFO] [stderr] Checking num v0.1.42 [INFO] [stderr] Checking spectral v0.6.0 [INFO] [stderr] Checking rustls v0.19.0 [INFO] [stderr] Checking webpki-roots v0.21.0 [INFO] [stderr] Checking lit v1.0.2 [INFO] [stderr] Compiling mhost v0.3.0-alpha.1 (/opt/rustwide/workdir) [INFO] [stderr] error: failed to run custom build command for `mhost v0.3.0-alpha.1 (/opt/rustwide/workdir)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/mhost-af8bc7ae149d1cc3/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'failed to create output directory: Os { code: 30, kind: Other, message: "Read-only file system" }', build.rs:20:37 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55eb203f19a7 - std::backtrace_rs::backtrace::libunwind::trace::h8bc78f7bc1f75bdb [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x55eb203f19a7 - std::backtrace_rs::backtrace::trace_unsynchronized::ha4c961c9576f95ba [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x55eb203f19a7 - std::sys_common::backtrace::_print_fmt::hc20cfdc233d6eb02 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x55eb203f19a7 - ::fmt::h04bea14549780a0f [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x55eb20408dac - core::fmt::write::h3868db8542c90941 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/fmt/mod.rs:1096:17 [INFO] [stderr] 5: 0x55eb203ef442 - std::io::Write::write_fmt::h55dd75636eef6a5c [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/io/mod.rs:1568:15 [INFO] [stderr] 6: 0x55eb203f36d5 - std::sys_common::backtrace::_print::h6439e8525077c7da [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x55eb203f36d5 - std::sys_common::backtrace::print::h02b685f728ce3931 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x55eb203f36d5 - std::panicking::default_hook::{{closure}}::h7c29625065fafae1 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x55eb203f3233 - std::panicking::default_hook::hba441710bb71f4d5 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x55eb203f3e71 - std::panicking::rust_panic_with_hook::ha936eb00e51bc4d9 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x55eb203f39b7 - std::panicking::begin_panic_handler::{{closure}}::hcd15140e0238536e [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x55eb203f1e6c - std::sys_common::backtrace::__rust_end_short_backtrace::hb13a021bb64823a1 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x55eb203f3919 - rust_begin_unwind [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x55eb20408181 - core::panicking::panic_fmt::h20225113c4a2f8fd [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/panicking.rs:92:14 [INFO] [stderr] 15: 0x55eb20407fa3 - core::option::expect_none_failed::hc6d6d4cea4fdc285 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/option.rs:1266:5 [INFO] [stderr] 16: 0x55eb203c6d84 - core::result::Result::expect::h4f72b13bb5e0bb14 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/result.rs:929:23 [INFO] [stderr] 17: 0x55eb2036ae2e - build_script_build::main::h486732977977dba3 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:20:5 [INFO] [stderr] 18: 0x55eb20371afb - core::ops::function::FnOnce::call_once::h2465bc3495c123aa [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 19: 0x55eb2036c4ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h3884b33eb2fbccea [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 20: 0x55eb203716f1 - std::rt::lang_start::{{closure}}::h74774dd7f01e9dbb [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/rt.rs:66:18 [INFO] [stderr] 21: 0x55eb203f4297 - core::ops::function::impls:: for &F>::call_once::h7c92107c3c98a949 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 22: 0x55eb203f4297 - std::panicking::try::do_call::h7454c57e8fbf0cc1 [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:379:40 [INFO] [stderr] 23: 0x55eb203f4297 - std::panicking::try::he71cdc15ed83b5ec [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panicking.rs:343:19 [INFO] [stderr] 24: 0x55eb203f4297 - std::panic::catch_unwind::hfc08ddb043e6e18c [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/panic.rs:396:14 [INFO] [stderr] 25: 0x55eb203f4297 - std::rt::lang_start_internal::he4958117ec6901fd [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/rt.rs:51:25 [INFO] [stderr] 26: 0x55eb203716c7 - std::rt::lang_start::h8bbe83771f3f302f [INFO] [stderr] at /rustc/4d0dd02ee07bddad9136f95c9f7846ebf3eb3fc5/library/std/src/rt.rs:65:5 [INFO] [stderr] 27: 0x55eb2036afba - main [INFO] [stderr] 28: 0x7f88e8dcc0b3 - __libc_start_main [INFO] [stderr] 29: 0x55eb203650be - _start [INFO] [stderr] 30: 0x0 - [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `Command { std: "docker" "inspect" "aeaaa1d78ecbd9e283b5da60151703f0b952d7e56191b9e065673bce56a4f413", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "aeaaa1d78ecbd9e283b5da60151703f0b952d7e56191b9e065673bce56a4f413", kill_on_drop: false }` [INFO] [stdout] aeaaa1d78ecbd9e283b5da60151703f0b952d7e56191b9e065673bce56a4f413