[INFO] fetching crate rustpython 0.1.2...
[INFO] checking rustpython-0.1.2 against master#3e826bb11228508fbe749e594038d6727208aa94 for pr-82322
[INFO] extracting crate rustpython 0.1.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate rustpython 0.1.2 on toolchain 3e826bb11228508fbe749e594038d6727208aa94
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate rustpython 0.1.2
[INFO] finished tweaking crates.io crate rustpython 0.1.2
[INFO] tweaked toml for crates.io crate rustpython 0.1.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate rustpython 0.1.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4e730a3520239c6c93dcf751a0e8e1a67c62f0c9d23ae063469094843e575a7e
[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" "4e730a3520239c6c93dcf751a0e8e1a67c62f0c9d23ae063469094843e575a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4e730a3520239c6c93dcf751a0e8e1a67c62f0c9d23ae063469094843e575a7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e730a3520239c6c93dcf751a0e8e1a67c62f0c9d23ae063469094843e575a7e", kill_on_drop: false }`
[INFO] [stdout] 4e730a3520239c6c93dcf751a0e8e1a67c62f0c9d23ae063469094843e575a7e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+3e826bb11228508fbe749e594038d6727208aa94" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f66611d0a123d18c2f7eebabcead454bd6f3487980e367e28a89b0d3be2c2dc7
[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" "f66611d0a123d18c2f7eebabcead454bd6f3487980e367e28a89b0d3be2c2dc7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling regex-syntax v0.6.17
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling bit-vec v0.5.1
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]     Checking smallvec v1.4.0
[INFO] [stderr]    Compiling failure_derive v0.1.7
[INFO] [stderr]     Checking instant v0.1.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stderr]    Compiling once_cell v1.3.1
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]    Compiling rustpython-vm v0.1.2
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking volatile v0.2.6
[INFO] [stderr]     Checking hex v0.4.2
[INFO] [stderr]    Compiling cpython v0.2.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling thread_local v1.0.1
[INFO] [stderr]    Compiling num-integer v0.1.42
[INFO] [stderr]    Compiling num-bigint v0.2.6
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]    Compiling indexmap v1.3.2
[INFO] [stderr]    Compiling num-iter v0.1.40
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]     Checking generational-arena v0.2.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.35
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]     Checking lock_api v0.4.0
[INFO] [stderr]    Compiling bit-set v0.5.1
[INFO] [stderr]     Checking unicode-normalization v0.1.12
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling typenum v1.11.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking crc32fast v1.2.0
[INFO] [stderr]     Checking csv-core v0.1.10
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling lexical-core v0.6.2
[INFO] [stderr]    Compiling lexical v4.0.0
[INFO] [stderr]     Checking regex v1.3.6
[INFO] [stderr]     Checking block-buffer v0.7.3
[INFO] [stderr]     Checking crypto-mac v0.7.0
[INFO] [stderr]    Compiling aho-corasick v0.7.10
[INFO] [stderr]    Compiling ena v0.13.1
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rustc_version_runtime-b9f73338247c74ea/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27:48
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55c4475ac9f0 - std::backtrace_rs::backtrace::libunwind::trace::hb4de9797f80b7b8c
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55c4475ac9f0 - std::backtrace_rs::backtrace::trace_unsynchronized::h59566d0bd20efff7
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55c4475ac9f0 - std::sys_common::backtrace::_print_fmt::hcfa5ce6be50275d4
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55c4475ac9f0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hd8c307a38b9bab04
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55c4475c791c - core::fmt::write::h3868db8542c90941
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/fmt/mod.rs:1092:17
[INFO] [stderr]      5:     0x55c4475aa252 - std::io::Write::write_fmt::hab90295d5a0f197d
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/io/mod.rs:1568:15
[INFO] [stderr]      6:     0x55c4475ae745 - std::sys_common::backtrace::_print::h19224910b8700cf1
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55c4475ae745 - std::sys_common::backtrace::print::h25dedfa68c5fb84a
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55c4475ae745 - std::panicking::default_hook::{{closure}}::h12c5765653a72a42
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55c4475ae1f3 - std::panicking::default_hook::he65cee71c4209f0c
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55c4475aeee1 - std::panicking::rust_panic_with_hook::h01a674d863fe0d8a
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55c4475aea27 - std::panicking::begin_panic_handler::{{closure}}::h9b9fecf185178864
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55c4475ace8c - std::sys_common::backtrace::__rust_end_short_backtrace::h57be46a42dc7f24b
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55c4475ae989 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55c4475c6b61 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55c4475c6983 - core::option::expect_none_failed::hc6d6d4cea4fdc285
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/option.rs:1300:5
[INFO] [stderr]     16:     0x55c447572e4b - core::result::Result<T,E>::unwrap::h43f841804763a164
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/result.rs:1037:23
[INFO] [stderr]     17:     0x55c44756f754 - build_script_build::main::h8b2bf5cd9f80e013
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27:17
[INFO] [stderr]     18:     0x55c44757121b - core::ops::function::FnOnce::call_once::h0933bb2025ca56c3
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55c44757114e - std::sys_common::backtrace::__rust_begin_short_backtrace::h6ea2729acdc59a73
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55c4475715e1 - std::rt::lang_start::{{closure}}::hd62283ae317d862d
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x55c4475af2fa - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h2c4fd7d4128112a8
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55c4475af2fa - std::panicking::try::do_call::h41fb7dbbbe7bece6
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x55c4475af2fa - std::panicking::try::hd38008ccba72bce1
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x55c4475af2fa - std::panic::catch_unwind::h057e765cd60f2d13
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x55c4475af2fa - std::rt::lang_start_internal::hdb9d0b9d2cdcda8b
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x55c4475715b7 - std::rt::lang_start::h63cc555ee06aa0eb
[INFO] [stderr]                                  at /rustc/3e826bb11228508fbe749e594038d6727208aa94/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x55c4475707da - main
[INFO] [stderr]     28:     0x7f73077d80b3 - __libc_start_main
[INFO] [stderr]     29:     0x55c44756f0ae - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "f66611d0a123d18c2f7eebabcead454bd6f3487980e367e28a89b0d3be2c2dc7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f66611d0a123d18c2f7eebabcead454bd6f3487980e367e28a89b0d3be2c2dc7", kill_on_drop: false }`
[INFO] [stdout] f66611d0a123d18c2f7eebabcead454bd6f3487980e367e28a89b0d3be2c2dc7