[INFO] fetching crate memvec 0.2.0...
[INFO] testing memvec-0.2.0 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate memvec 0.2.0 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate memvec 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate memvec 0.2.0
[INFO] tweaked toml for crates.io crate memvec 0.2.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate memvec 0.2.0 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate memvec 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7ef6542f5dd37419882236174c36f8875467169fc7937077c2c0e1dff214f995
[INFO] running `Command { std: "docker" "start" "-a" "7ef6542f5dd37419882236174c36f8875467169fc7937077c2c0e1dff214f995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7ef6542f5dd37419882236174c36f8875467169fc7937077c2c0e1dff214f995", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ef6542f5dd37419882236174c36f8875467169fc7937077c2c0e1dff214f995", kill_on_drop: false }`
[INFO] [stdout] 7ef6542f5dd37419882236174c36f8875467169fc7937077c2c0e1dff214f995
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0ea04c24de6411737b7b2ef56009aa77b4b44a73d947208939624b2c310881bd
[INFO] running `Command { std: "docker" "start" "-a" "0ea04c24de6411737b7b2ef56009aa77b4b44a73d947208939624b2c310881bd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.173
[INFO] [stderr]    Compiling memmap2 v0.9.5
[INFO] [stderr]    Compiling memvec v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "0ea04c24de6411737b7b2ef56009aa77b4b44a73d947208939624b2c310881bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ea04c24de6411737b7b2ef56009aa77b4b44a73d947208939624b2c310881bd", kill_on_drop: false }`
[INFO] [stdout] 0ea04c24de6411737b7b2ef56009aa77b4b44a73d947208939624b2c310881bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd302108f2c33bcfd23637024ca23ffb94fce40f49c9ee64a789c856b2b92dc6
[INFO] running `Command { std: "docker" "start" "-a" "cd302108f2c33bcfd23637024ca23ffb94fce40f49c9ee64a789c856b2b92dc6", kill_on_drop: false }`
[INFO] [stderr]    Compiling memvec v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "cd302108f2c33bcfd23637024ca23ffb94fce40f49c9ee64a789c856b2b92dc6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd302108f2c33bcfd23637024ca23ffb94fce40f49c9ee64a789c856b2b92dc6", kill_on_drop: false }`
[INFO] [stdout] cd302108f2c33bcfd23637024ca23ffb94fce40f49c9ee64a789c856b2b92dc6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c59910de81e017a65476e8cead42ddd8a84c34ebae781d1fcae25ce753e5befc
[INFO] running `Command { std: "docker" "start" "-a" "c59910de81e017a65476e8cead42ddd8a84c34ebae781d1fcae25ce753e5befc", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/memvec-d6aa7d34fd3636ce)
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test tests::mmap_anon_with_size ... ok
[INFO] [stdout] test tests::mmap_anon_with_options ... ok
[INFO] [stdout] test tests::mmap_anon ... ok
[INFO] [stdout] test tests::mmap_file ... ok
[INFO] [stdout] test tests::memvec_file ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests memvec
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test src/mmap.rs - mmap::VecFile (line 161) - compile ... ok
[INFO] [stdout] test src/mmap.rs - mmap::VecFile (line 136) - compile ... ok
[INFO] [stdout] test src/mmap.rs - mmap::MmapAnon::with_size (line 457) ... ok
[INFO] [stdout] test src/mmap.rs - mmap::MmapAnon::with_size (line 438) ... ok
[INFO] [stdout] test src/mem_vec.rs - mem_vec::MemVec (line 25) ... ok
[INFO] [stdout] test src/mmap.rs - mmap::MmapAnon::with_options (line 504) ... ok
[INFO] [stdout] test src/mmap.rs - mmap::VecFile (line 182) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/mmap.rs - mmap::VecFile (line 182) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (191) panicked at src/mmap.rs:23:37:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x63fe92e61012 - std::backtrace_rs::backtrace::libunwind::trace::h7cddb8376417e7cc
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x63fe92e61012 - std::backtrace_rs::backtrace::trace_unsynchronized::hb4e41acf4b349ff1
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x63fe92e61012 - std::sys::backtrace::_print_fmt::h1222b80910ba6eb5
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x63fe92e61012 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5bb8a979ba5db788
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x63fe92e6ff6f - core::fmt::rt::Argument::fmt::h2ee2c138a50a7796
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x63fe92e6ff6f - core::fmt::write::h1e0dbf07fe3990bd
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x63fe92e3e003 - std::io::default_write_fmt::hb0810a37865e52a5
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x63fe92e3e003 - std::io::Write::write_fmt::h12c8908aaac7ca22
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x63fe92e43852 - std::sys::backtrace::BacktraceLock::print::h788d486777205086
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x63fe92e451ec - std::panicking::default_hook::{{closure}}::ha7bdfeb5949fc0fa
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x63fe92e45046 - std::panicking::default_hook::h6dad75ec721846f4
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:328:9
[INFO] [stdout]   11:     0x63fe92e457c5 - std::panicking::panic_with_hook::hba00e869ada17676
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:834:13
[INFO] [stdout]   12:     0x63fe92e4565a - std::panicking::panic_handler::{{closure}}::h3d21149c258e5ceb
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:707:13
[INFO] [stdout]   13:     0x63fe92e43989 - std::sys::backtrace::__rust_end_short_backtrace::h4f5d9b9dfb3e6ec1
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   14:     0x63fe92e3270d - __rustc[9a7a9f9af7564de1]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:698:5
[INFO] [stdout]   15:     0x63fe92e736c0 - core::panicking::panic_fmt::h78e817a90331d98b
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panicking.rs:75:14
[INFO] [stdout]   16:     0x63fe92e72db6 - core::result::unwrap_failed::h3ce108722ad88f1e
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/result.rs:1852:5
[INFO] [stdout]   17:     0x63fe92e2c7db - rust_out::main::hb2c1f26112d8e974
[INFO] [stdout]   18:     0x63fe92e2b213 - core::ops::function::FnOnce::call_once::h01e49b384cd31373
[INFO] [stdout]   19:     0x63fe92e2b136 - std::sys::backtrace::__rust_begin_short_backtrace::hc341f747de1a6e5f
[INFO] [stdout]   20:     0x63fe92e2b119 - std::rt::lang_start::{{closure}}::h5855c6a947873adf
[INFO] [stdout]   21:     0x63fe92e3f780 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h1dc0a50e6295ec78
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:290:21
[INFO] [stdout]   22:     0x63fe92e3f780 - std::panicking::catch_unwind::do_call::h209f742e9999044e
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stdout]   23:     0x63fe92e3f780 - std::panicking::catch_unwind::h508c6e2aa6d72749
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stdout]   24:     0x63fe92e3f780 - std::panic::catch_unwind::hebcbb24aa9914693
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stdout]   25:     0x63fe92e3f780 - std::rt::lang_start_internal::{{closure}}::h703cbe32967ef209
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:175:24
[INFO] [stdout]   26:     0x63fe92e3f780 - std::panicking::catch_unwind::do_call::hf50f2a30bce4e10b
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stdout]   27:     0x63fe92e3f780 - std::panicking::catch_unwind::hac448d7e3b12daa3
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stdout]   28:     0x63fe92e3f780 - std::panic::catch_unwind::ha9d74a13d77f299c
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x63fe92e3f780 - std::rt::lang_start_internal::ha26d244788d1956d
[INFO] [stdout]                                at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:171:5
[INFO] [stdout]   30:     0x63fe92e2b101 - std::rt::lang_start::h75941d661fa88314
[INFO] [stdout]   31:     0x63fe92e2cc25 - main
[INFO] [stdout]   32:     0x7a69dd82e1ca - <unknown>
[INFO] [stdout]   33:     0x7a69dd82e28b - __libc_start_main
[INFO] [stdout]   34:     0x63fe92e2adb5 - _start
[INFO] [stdout]   35:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/mmap.rs - mmap::VecFile (line 182)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 6 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.17s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "c59910de81e017a65476e8cead42ddd8a84c34ebae781d1fcae25ce753e5befc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c59910de81e017a65476e8cead42ddd8a84c34ebae781d1fcae25ce753e5befc", kill_on_drop: false }`
[INFO] [stdout] c59910de81e017a65476e8cead42ddd8a84c34ebae781d1fcae25ce753e5befc