[INFO] fetching crate vkcargo 0.45.1...
[INFO] testing vkcargo-0.45.1 against beta-2020-06-03 for beta-1.45-1
[INFO] extracting crate vkcargo 0.45.1 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate vkcargo 0.45.1 on toolchain beta-2020-06-03
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate vkcargo 0.45.1
[INFO] finished tweaking crates.io crate vkcargo 0.45.1
[INFO] tweaked toml for crates.io crate vkcargo 0.45.1 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate vkcargo 0.45.1 already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+beta-2020-06-03" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "build" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c0a2fb904d1a3bd67a394f39fd5100e51746347901585277d5a3096c583dab20
[INFO] running `"docker" "start" "-a" "c0a2fb904d1a3bd67a394f39fd5100e51746347901585277d5a3096c583dab20"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]    Compiling curl v0.4.28
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling utf8parse v0.1.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling humantime v2.0.0
[INFO] [stderr]    Compiling opener v0.4.1
[INFO] [stderr]    Compiling hex v0.4.2
[INFO] [stderr]    Compiling bytesize v1.0.0
[INFO] [stderr]    Compiling rustc-workspace-hack v1.0.0
[INFO] [stderr]    Compiling home v0.5.3
[INFO] [stderr]    Compiling shell-escape v0.1.4
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling im-rc v14.3.0
[INFO] [stderr]    Compiling vte v0.3.3
[INFO] [stderr]    Compiling jobserver v0.1.21
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling socket2 v0.3.12
[INFO] [stderr]    Compiling filetime v0.2.9
[INFO] [stderr]    Compiling num_cpus v1.12.0
[INFO] [stderr]    Compiling fs2 v0.4.3
[INFO] [stderr]    Compiling bitmaps v2.1.0
[INFO] [stderr]    Compiling url v2.1.1
[INFO] [stderr]    Compiling bstr v0.2.12
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling strip-ansi-escapes v0.1.0
[INFO] [stderr]    Compiling crossbeam-channel v0.4.2
[INFO] [stderr]    Compiling regex v1.3.6
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.50
[INFO] [stderr]    Compiling tar v0.4.26
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand_xoshiro v0.4.0
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling globset v0.4.5
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling openssl-sys v0.9.55
[INFO] [stderr]    Compiling libz-sys v1.0.25
[INFO] [stderr]    Compiling libnghttp2-sys v0.1.3
[INFO] [stderr]    Compiling curl-sys v0.4.30+curl-7.69.1
[INFO] [stderr]    Compiling libssh2-sys v0.2.16
[INFO] [stderr]    Compiling libgit2-sys v0.12.2+1.0.0
[INFO] [stderr]    Compiling ignore v0.4.14
[INFO] [stderr]    Compiling tempfile v3.1.0
[INFO] [stderr]    Compiling sized-chunks v0.5.3
[INFO] [stderr]    Compiling openssl v0.10.29
[INFO] [stderr]    Compiling flate2 v1.0.14
[INFO] [stderr]    Compiling serde_derive v1.0.106
[INFO] [stderr]    Compiling crypto-hash v0.3.4
[INFO] [stderr]    Compiling git2 v0.13.1
[INFO] [stderr]    Compiling git2-curl v0.14.0
[INFO] [stderr]    Compiling serde_json v1.0.51
[INFO] [stderr]    Compiling cargo-platform v0.1.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling toml v0.5.6
[INFO] [stderr]    Compiling serde_ignored v0.1.1
[INFO] [stderr]    Compiling rustfix v0.5.1
[INFO] [stderr]    Compiling crates-io v0.31.0
[INFO] [stderr]    Compiling vkcargo v0.45.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stderr]     |
[INFO] [stderr] 841 |                 mem::replace(repo, new);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2m 59s
[INFO] running `"docker" "inspect" "c0a2fb904d1a3bd67a394f39fd5100e51746347901585277d5a3096c583dab20"`
[INFO] running `"docker" "rm" "-f" "c0a2fb904d1a3bd67a394f39fd5100e51746347901585277d5a3096c583dab20"`
[INFO] [stdout] c0a2fb904d1a3bd67a394f39fd5100e51746347901585277d5a3096c583dab20
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-06-03" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 72774c1ba0dc83c666eb81a9ee0719a04b10e503dd5bc317282270b1b32822fd
[INFO] running `"docker" "start" "-a" "72774c1ba0dc83c666eb81a9ee0719a04b10e503dd5bc317282270b1b32822fd"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling vkcargo v0.45.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stderr]     |
[INFO] [stderr] 841 |                 mem::replace(repo, new);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error[E0463]: can't find crate for `cargo_test_macro`
[INFO] [stderr]   --> tests/testsuite/main.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | extern crate cargo_test_macro;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ can't find crate
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0463`.
[INFO] [stderr] error: could not compile `vkcargo`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error[E0432]: unresolved import `cargo_test_support`
[INFO] [stderr]   --> tests/build-std/main.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 | use cargo_test_support::*;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^ use of undeclared type or module `cargo_test_support`
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute `cargo_test` in this scope
[INFO] [stderr]   --> tests/build-std/main.rs:63:3
[INFO] [stderr]    |
[INFO] [stderr] 63 | #[cargo_test(build_std)]
[INFO] [stderr]    |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute `cargo_test` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:114:3
[INFO] [stderr]     |
[INFO] [stderr] 114 | #[cargo_test(build_std)]
[INFO] [stderr]     |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: cannot find attribute `cargo_test` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:157:3
[INFO] [stderr]     |
[INFO] [stderr] 157 | #[cargo_test(build_std)]
[INFO] [stderr]     |   ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error[E0433]: failed to resolve: use of undeclared type or module `paths`
[INFO] [stderr]    --> tests/build-std/main.rs:197:19
[INFO] [stderr]     |
[INFO] [stderr] 197 |     let sysroot = paths::sysroot();
[INFO] [stderr]     |                   ^^^^^ use of undeclared type or module `paths`
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Execs` in this scope
[INFO] [stderr]   --> tests/build-std/main.rs:25:29
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn enable_build_std(e: &mut Execs, arg: Option<&str>) {
[INFO] [stderr]    |                             ^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0412]: cannot find type `Execs` in this scope
[INFO] [stderr]   --> tests/build-std/main.rs:46:19
[INFO] [stderr]    |
[INFO] [stderr] 46 | impl BuildStd for Execs {
[INFO] [stderr]    |                   ^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `rustc_host` in this scope
[INFO] [stderr]   --> tests/build-std/main.rs:58:34
[INFO] [stderr]    |
[INFO] [stderr] 58 |         self.arg("--target").arg(rustc_host());
[INFO] [stderr]    |                                  ^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `project` in this scope
[INFO] [stderr]   --> tests/build-std/main.rs:65:13
[INFO] [stderr]    |
[INFO] [stderr] 65 |     let p = project()
[INFO] [stderr]    |             ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `project` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |     let p = project()
[INFO] [stderr]     |             ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `basic_manifest` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:133:34
[INFO] [stderr]     |
[INFO] [stderr] 133 |         .file("dep/Cargo.toml", &basic_manifest("dep", "0.1.0"))
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `project` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:159:13
[INFO] [stderr]     |
[INFO] [stderr] 159 |     let p = project()
[INFO] [stderr]     |             ^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error[E0425]: cannot find function `rustc_host` in this scope
[INFO] [stderr]    --> tests/build-std/main.rs:202:15
[INFO] [stderr]     |
[INFO] [stderr] 202 |         .join(rustc_host())
[INFO] [stderr]     |               ^^^^^^^^^^ not found in this scope
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 13 previous errors
[INFO] [stderr] 
[INFO] [stderr] Some errors have detailed explanations: E0412, E0425, E0432, E0433.
[INFO] [stderr] For more information about an error, try `rustc --explain E0412`.
[INFO] [stderr] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stderr]    --> src/cargo/sources/git/utils.rs:841:17
[INFO] [stderr]     |
[INFO] [stderr] 841 |                 mem::replace(repo, new);
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] note: the lint level is defined here
[INFO] [stderr]    --> src/cargo/lib.rs:1:24
[INFO] [stderr]     |
[INFO] [stderr] 1   | #![cfg_attr(test, deny(warnings))]
[INFO] [stderr]     |                        ^^^^^^^^
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` implied by `#[warn(warnings)]`
[INFO] [stderr]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "72774c1ba0dc83c666eb81a9ee0719a04b10e503dd5bc317282270b1b32822fd"`
[INFO] running `"docker" "rm" "-f" "72774c1ba0dc83c666eb81a9ee0719a04b10e503dd5bc317282270b1b32822fd"`
[INFO] [stdout] 72774c1ba0dc83c666eb81a9ee0719a04b10e503dd5bc317282270b1b32822fd