[INFO] cloning repository https://github.com/LilCloudCoder/RustfileIO
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LilCloudCoder/RustfileIO" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLilCloudCoder%2FRustfileIO", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLilCloudCoder%2FRustfileIO'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ce9ad81c8a87dd255a28a06cef79d8c03fec5627
[INFO] testing LilCloudCoder/RustfileIO against try#b8e88e5ddf5521a9f43ee3f62a702388c713e4bb for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLilCloudCoder%2FRustfileIO" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/LilCloudCoder/RustfileIO
[INFO] finished tweaking git repo https://github.com/LilCloudCoder/RustfileIO
[INFO] tweaked toml for git repo https://github.com/LilCloudCoder/RustfileIO written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/LilCloudCoder/RustfileIO on toolchain b8e88e5ddf5521a9f43ee3f62a702388c713e4bb
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/LilCloudCoder/RustfileIO 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" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 296fcc3bbf8f74a0786be7f762f103c61d574d4a453d41eb558d98cf38d72d8a
[INFO] running `Command { std: "docker" "start" "-a" "296fcc3bbf8f74a0786be7f762f103c61d574d4a453d41eb558d98cf38d72d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "296fcc3bbf8f74a0786be7f762f103c61d574d4a453d41eb558d98cf38d72d8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "296fcc3bbf8f74a0786be7f762f103c61d574d4a453d41eb558d98cf38d72d8a", kill_on_drop: false }`
[INFO] [stdout] 296fcc3bbf8f74a0786be7f762f103c61d574d4a453d41eb558d98cf38d72d8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 55f5713607eda5a53e1e86218f01a0dceea97efebf40abb1e6b022977dcad58c
[INFO] running `Command { std: "docker" "start" "-a" "55f5713607eda5a53e1e86218f01a0dceea97efebf40abb1e6b022977dcad58c", kill_on_drop: false }`
[INFO] [stderr]    Compiling fileio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `Command { std: "docker" "inspect" "55f5713607eda5a53e1e86218f01a0dceea97efebf40abb1e6b022977dcad58c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f5713607eda5a53e1e86218f01a0dceea97efebf40abb1e6b022977dcad58c", kill_on_drop: false }`
[INFO] [stdout] 55f5713607eda5a53e1e86218f01a0dceea97efebf40abb1e6b022977dcad58c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1027be5e4092ed523be5a81cad12e7d016850e42ef229512fe214535a61d5eab
[INFO] running `Command { std: "docker" "start" "-a" "1027be5e4092ed523be5a81cad12e7d016850e42ef229512fe214535a61d5eab", kill_on_drop: false }`
[INFO] [stderr]    Compiling fileio v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.30s
[INFO] running `Command { std: "docker" "inspect" "1027be5e4092ed523be5a81cad12e7d016850e42ef229512fe214535a61d5eab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1027be5e4092ed523be5a81cad12e7d016850e42ef229512fe214535a61d5eab", kill_on_drop: false }`
[INFO] [stdout] 1027be5e4092ed523be5a81cad12e7d016850e42ef229512fe214535a61d5eab
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+b8e88e5ddf5521a9f43ee3f62a702388c713e4bb" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e871bff44216ef1ea9c568fb9ed9b22a88df330ae2f63a47a4900acebb2d2a9b
[INFO] running `Command { std: "docker" "start" "-a" "e871bff44216ef1ea9c568fb9ed9b22a88df330ae2f63a47a4900acebb2d2a9b", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fileio-c706acc41b2a8042)
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fileio-be70336bc8cd39b7)
[INFO] [stderr]    Doc-tests fileio
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 4) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 4) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (41) panicked at src/lib.rs:8:33:
[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:     0x6478ec6eed1a - std[fce30c26ee6459b]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x6478ec6eed1a - std[fce30c26ee6459b]::backtrace_rs::backtrace::trace_unsynchronized::<std[fce30c26ee6459b]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x6478ec6eed1a - std[fce30c26ee6459b]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x6478ec6eed1a - <<std[fce30c26ee6459b]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[d17f6591d688f3bd]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x6478ec6ff49a - <core[d17f6591d688f3bd]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x6478ec6ff49a - core[d17f6591d688f3bd]::fmt::write
[INFO] [stdout]    6:     0x6478ec6f24e2 - std[fce30c26ee6459b]::io::default_write_fmt::<std[fce30c26ee6459b]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x6478ec6f24e2 - <std[fce30c26ee6459b]::sys::stdio::unix::Stderr as std[fce30c26ee6459b]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x6478ec6daa2f - <std[fce30c26ee6459b]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x6478ec6daa2f - std[fce30c26ee6459b]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x6478ec6eb201 - std[fce30c26ee6459b]::panicking::default_hook
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x6478ec6eb3bb - std[fce30c26ee6459b]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x6478ec6daae8 - std[fce30c26ee6459b]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x6478ec6d00d9 - std[fce30c26ee6459b]::sys::backtrace::__rust_end_short_backtrace::<std[fce30c26ee6459b]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x6478ec6db2cd - __rustc[de152adb51f02556]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x6478ec6ffbec - core[d17f6591d688f3bd]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x6478ec6ff962 - core[d17f6591d688f3bd]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x6478ec6bb0c4 - rust_out[16dc9842da0c8db5]::main::_doctest_main_src_lib_rs_4_0
[INFO] [stdout]   18:     0x6478ec6bae26 - rust_out[16dc9842da0c8db5]::main
[INFO] [stdout]   19:     0x6478ec6bb893 - <fn() as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   20:     0x6478ec6bade6 - std[fce30c26ee6459b]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   21:     0x6478ec6badf9 - std[fce30c26ee6459b]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   22:     0x6478ec6ea987 - <&dyn core[d17f6591d688f3bd]::ops::function::Fn<(), Output = i32> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::panic::unwind_safe::RefUnwindSafe as core[d17f6591d688f3bd]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   23:     0x6478ec6ea987 - std[fce30c26ee6459b]::panicking::catch_unwind::do_call::<&dyn core[d17f6591d688f3bd]::ops::function::Fn<(), Output = i32> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:581:40
[INFO] [stdout]   24:     0x6478ec6ea987 - std[fce30c26ee6459b]::panicking::catch_unwind::<i32, &dyn core[d17f6591d688f3bd]::ops::function::Fn<(), Output = i32> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:544:19
[INFO] [stdout]   25:     0x6478ec6ea987 - std[fce30c26ee6459b]::panic::catch_unwind::<&dyn core[d17f6591d688f3bd]::ops::function::Fn<(), Output = i32> + core[d17f6591d688f3bd]::marker::Sync + core[d17f6591d688f3bd]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panic.rs:359:14
[INFO] [stdout]   26:     0x6478ec6ea987 - std[fce30c26ee6459b]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/rt.rs:175:24
[INFO] [stdout]   27:     0x6478ec6ea987 - std[fce30c26ee6459b]::panicking::catch_unwind::do_call::<std[fce30c26ee6459b]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:581:40
[INFO] [stdout]   28:     0x6478ec6ea987 - std[fce30c26ee6459b]::panicking::catch_unwind::<isize, std[fce30c26ee6459b]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panicking.rs:544:19
[INFO] [stdout]   29:     0x6478ec6ea987 - std[fce30c26ee6459b]::panic::catch_unwind::<std[fce30c26ee6459b]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x6478ec6ea987 - std[fce30c26ee6459b]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/b8e88e5ddf5521a9f43ee3f62a702388c713e4bb/library/std/src/rt.rs:171:5
[INFO] [stdout]   31:     0x6478ec6bad31 - std[fce30c26ee6459b]::rt::lang_start::<()>
[INFO] [stdout]   32:     0x6478ec6bb905 - main
[INFO] [stdout]   33:     0x7d9d853841ca - <unknown>
[INFO] [stdout]   34:     0x7d9d8538428b - __libc_start_main
[INFO] [stdout]   35:     0x6478ec6bab75 - _start
[INFO] [stdout]   36:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 4)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.20s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "e871bff44216ef1ea9c568fb9ed9b22a88df330ae2f63a47a4900acebb2d2a9b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e871bff44216ef1ea9c568fb9ed9b22a88df330ae2f63a47a4900acebb2d2a9b", kill_on_drop: false }`
[INFO] [stdout] e871bff44216ef1ea9c568fb9ed9b22a88df330ae2f63a47a4900acebb2d2a9b
