[INFO] fetching crate core_rustc-serialize 0.3.20-v0.3.19patch1... [INFO] testing core_rustc-serialize-0.3.20-v0.3.19patch1 against beta-2021-01-01 for beta-1.50-1 [INFO] extracting crate core_rustc-serialize 0.3.20-v0.3.19patch1 into /workspace/builds/worker-7/source [INFO] validating manifest of crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 on toolchain beta-2021-01-01 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 [INFO] finished tweaking crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 [INFO] tweaked toml for crates.io crate core_rustc-serialize 0.3.20-v0.3.19patch1 written to /workspace/builds/worker-7/source/Cargo.toml [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }` [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded core_collections v0.3.20170409 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] e67777e46ce62f764631135851aba580a43639ab49b3366fb6b9a34673b559bf [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" "e67777e46ce62f764631135851aba580a43639ab49b3366fb6b9a34673b559bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "e67777e46ce62f764631135851aba580a43639ab49b3366fb6b9a34673b559bf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "e67777e46ce62f764631135851aba580a43639ab49b3366fb6b9a34673b559bf", kill_on_drop: false }` [INFO] [stdout] e67777e46ce62f764631135851aba580a43639ab49b3366fb6b9a34673b559bf [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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=warn" "-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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c90ae7fb8b491b390a074cd3d0caee1fcfe4235640b89b5d9c15936700d70397 [INFO] running `Command { std: "docker" "start" "-a" "c90ae7fb8b491b390a074cd3d0caee1fcfe4235640b89b5d9c15936700d70397", kill_on_drop: false }` [INFO] [stderr] Compiling semver v0.1.20 [INFO] [stderr] Compiling rand v0.3.23 [INFO] [stderr] Compiling rustc_version v0.1.7 [INFO] [stderr] Compiling core_collections v0.3.20170409 [INFO] [stderr] error: failed to run custom build command for `core_collections v0.3.20170409` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/core_collections-c48eb82af61aa59b/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'Unknown compiler version, upgrade core_collections?', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48:69 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5596f4e0ca57 - std::backtrace_rs::backtrace::libunwind::trace::hcd6e187547b8deec [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x5596f4e0ca57 - std::backtrace_rs::backtrace::trace_unsynchronized::hde10036eb783fbc7 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5596f4e0ca57 - std::sys_common::backtrace::_print_fmt::h63987b8f86dfc82a [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x5596f4e0ca57 - ::fmt::hc33f3ac4cc9c4196 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x5596f4e26d8c - core::fmt::write::hfdcdeb08fb2b3afa [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/fmt/mod.rs:1078:17 [INFO] [stderr] 5: 0x5596f4e09f72 - std::io::Write::write_fmt::h83a843778fa2a815 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/io/mod.rs:1519:15 [INFO] [stderr] 6: 0x5596f4e0e7b5 - std::sys_common::backtrace::_print::hf179508b01f66878 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x5596f4e0e7b5 - std::sys_common::backtrace::print::ha97d11adb39266a6 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x5596f4e0e7b5 - std::panicking::default_hook::{{closure}}::h8da9985a98bd1582 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x5596f4e0e30a - std::panicking::default_hook::hbc0ee792993c2ef2 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x5596f4e0ef51 - std::panicking::rust_panic_with_hook::h9fb9cda33a10f084 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x5596f4e0ea97 - std::panicking::begin_panic_handler::{{closure}}::hf3e83396e085962e [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x5596f4e0cf1c - std::sys_common::backtrace::__rust_end_short_backtrace::hac151ac4c1e3252d [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x5596f4e0e9f9 - rust_begin_unwind [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x5596f4e26161 - core::panicking::panic_fmt::hf6d8a92b065b8f97 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/panicking.rs:92:14 [INFO] [stderr] 15: 0x5596f4e25ef3 - core::option::expect_failed::h64fa065966c0d22b [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/option.rs:1260:5 [INFO] [stderr] 16: 0x5596f4dd5201 - core::option::Option::expect::h842260853d01c2cc [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/option.rs:349:21 [INFO] [stderr] 17: 0x5596f4dd30b2 - build_script_build::main::hddbfca6076b29c6d [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/core_collections-0.3.20170409/build.rs:48:4 [INFO] [stderr] 18: 0x5596f4dd73fb - core::ops::function::FnOnce::call_once::h4241c04038911114 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 19: 0x5596f4dd4e3e - std::sys_common::backtrace::__rust_begin_short_backtrace::h6df607e27e4d7def [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 20: 0x5596f4dd71e1 - std::rt::lang_start::{{closure}}::heac66d4fb2d7fad3 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:66:18 [INFO] [stderr] 21: 0x5596f4e0f377 - core::ops::function::impls:: for &F>::call_once::hb5ab992a536e3d7c [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 22: 0x5596f4e0f377 - std::panicking::try::do_call::h1bda883686bc1816 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:379:40 [INFO] [stderr] 23: 0x5596f4e0f377 - std::panicking::try::ha7167c079f243e71 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:343:19 [INFO] [stderr] 24: 0x5596f4e0f377 - std::panic::catch_unwind::he11c3de53f0b5853 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:396:14 [INFO] [stderr] 25: 0x5596f4e0f377 - std::rt::lang_start_internal::h45c3666b51d25060 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:51:25 [INFO] [stderr] 26: 0x5596f4dd71b7 - std::rt::lang_start::h3d3956e323062783 [INFO] [stderr] at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:65:5 [INFO] [stderr] 27: 0x5596f4dd3a0a - main [INFO] [stderr] 28: 0x7f7d07e6e0b3 - __libc_start_main [INFO] [stderr] 29: 0x5596f4dcd0ae - _start [INFO] [stderr] 30: 0x0 - [INFO] running `Command { std: "docker" "inspect" "c90ae7fb8b491b390a074cd3d0caee1fcfe4235640b89b5d9c15936700d70397", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c90ae7fb8b491b390a074cd3d0caee1fcfe4235640b89b5d9c15936700d70397", kill_on_drop: false }` [INFO] [stdout] c90ae7fb8b491b390a074cd3d0caee1fcfe4235640b89b5d9c15936700d70397