[INFO] fetching crate staart 0.1.7...
[INFO] testing staart-0.1.7 against try#ce59db7a1b1b012fb2793c4641c1bdecad7a128b for pr-85530
[INFO] extracting crate staart 0.1.7 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate staart 0.1.7 on toolchain ce59db7a1b1b012fb2793c4641c1bdecad7a128b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate staart 0.1.7
[INFO] finished tweaking crates.io crate staart 0.1.7
[INFO] tweaked toml for crates.io crate staart 0.1.7 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate staart 0.1.7 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4a0b29a8ddaeabe4107f40f908e79d5f67f96a36127115e6978f810cf8a5423
[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" "a4a0b29a8ddaeabe4107f40f908e79d5f67f96a36127115e6978f810cf8a5423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a0b29a8ddaeabe4107f40f908e79d5f67f96a36127115e6978f810cf8a5423", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a0b29a8ddaeabe4107f40f908e79d5f67f96a36127115e6978f810cf8a5423", kill_on_drop: false }`
[INFO] [stdout] a4a0b29a8ddaeabe4107f40f908e79d5f67f96a36127115e6978f810cf8a5423
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6bef605cce2a065abb32777a1f29c747f98575c55456ec867b687cf1dac868dd
[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" "6bef605cce2a065abb32777a1f29c747f98575c55456ec867b687cf1dac868dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling staart v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "6bef605cce2a065abb32777a1f29c747f98575c55456ec867b687cf1dac868dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6bef605cce2a065abb32777a1f29c747f98575c55456ec867b687cf1dac868dd", kill_on_drop: false }`
[INFO] [stdout] 6bef605cce2a065abb32777a1f29c747f98575c55456ec867b687cf1dac868dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d71c4e910992e38a542b1a5318dbef242ac5e573d2f640c73e3506a650325c5d
[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" "d71c4e910992e38a542b1a5318dbef242ac5e573d2f640c73e3506a650325c5d", kill_on_drop: false }`
[INFO] [stderr]    Compiling staart v0.1.7 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "d71c4e910992e38a542b1a5318dbef242ac5e573d2f640c73e3506a650325c5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d71c4e910992e38a542b1a5318dbef242ac5e573d2f640c73e3506a650325c5d", kill_on_drop: false }`
[INFO] [stdout] d71c4e910992e38a542b1a5318dbef242ac5e573d2f640c73e3506a650325c5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+ce59db7a1b1b012fb2793c4641c1bdecad7a128b" "test" "--frozen", 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] f7d321d5f818474a72809951d66d0b412a503a871c94afafdc7f6f00b0ef01dc
[INFO] running `Command { std: "docker" "start" "-a" "f7d321d5f818474a72809951d66d0b412a503a871c94afafdc7f6f00b0ef01dc", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/staart-8b8c8bcfa56e06dd)
[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]      Running unittests (/opt/rustwide/target/debug/deps/staart-c680d7b960899ca1)
[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]    Doc-tests staart
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 17) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/lib.rs - (line 17) stdout ----
[INFO] [stdout] Test executable failed (exit code 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] thread 'main' panicked at 'index out of bounds: the len is 1 but the index is 1', src/lib.rs:7:17
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56129093acc0 - std[77c0456e0eb29f0c]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stdout]    1:     0x56129093acc0 - std[77c0456e0eb29f0c]::backtrace_rs::backtrace::trace_unsynchronized::<std[77c0456e0eb29f0c]::sys_common::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x56129093acc0 - std[77c0456e0eb29f0c]::sys_common::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stdout]    3:     0x56129093acc0 - <std[77c0456e0eb29f0c]::sys_common::backtrace::_print::DisplayBacktrace as core[ee1ca6415511a9c4]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stdout]    4:     0x5612909548cc - core[ee1ca6415511a9c4]::fmt::write
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/core/src/fmt/mod.rs:1110:17
[INFO] [stdout]    5:     0x561290939375 - <std[77c0456e0eb29f0c]::sys::unix::stdio::Stderr as std[77c0456e0eb29f0c]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/io/mod.rs:1584:15
[INFO] [stdout]    6:     0x56129093c90b - std[77c0456e0eb29f0c]::sys_common::backtrace::_print
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stdout]    7:     0x56129093c90b - std[77c0456e0eb29f0c]::sys_common::backtrace::print
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stdout]    8:     0x56129093c90b - std[77c0456e0eb29f0c]::panicking::default_hook::{closure#1}
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:208:50
[INFO] [stdout]    9:     0x56129093c3e1 - std[77c0456e0eb29f0c]::panicking::default_hook
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:225:9
[INFO] [stdout]   10:     0x56129093cfb1 - std[77c0456e0eb29f0c]::panicking::rust_panic_with_hook
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:622:17
[INFO] [stdout]   11:     0x56129093cab7 - std[77c0456e0eb29f0c]::panicking::begin_panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:519:13
[INFO] [stdout]   12:     0x56129093b1bc - std[77c0456e0eb29f0c]::sys_common::backtrace::__rust_end_short_backtrace::<std[77c0456e0eb29f0c]::panicking::begin_panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stdout]   13:     0x56129093ca19 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:515:5
[INFO] [stdout]   14:     0x56129091dff1 - core[ee1ca6415511a9c4]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/core/src/panicking.rs:92:14
[INFO] [stdout]   15:     0x56129091dfb2 - core[ee1ca6415511a9c4]::panicking::panic_bounds_check
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/core/src/panicking.rs:69:5
[INFO] [stdout]   16:     0x5612909210a2 - <usize as core[ee1ca6415511a9c4]::slice::index::SliceIndex<[alloc[cda43b294bbfc5d0]::string::String]>>::index
[INFO] [stdout]   17:     0x561290920f29 - <[alloc[cda43b294bbfc5d0]::string::String] as core[ee1ca6415511a9c4]::ops::index::Index<usize>>::index
[INFO] [stdout]   18:     0x5612909217dd - <alloc[cda43b294bbfc5d0]::vec::Vec<alloc[cda43b294bbfc5d0]::string::String> as core[ee1ca6415511a9c4]::ops::index::Index<usize>>::index
[INFO] [stdout]   19:     0x561290921bcd - rust_out[17891616a171812d]::main
[INFO] [stdout]   20:     0x561290921a66 - <fn() -> core[ee1ca6415511a9c4]::result::Result<(), alloc[cda43b294bbfc5d0]::boxed::Box<dyn std[77c0456e0eb29f0c]::error::Error>> as core[ee1ca6415511a9c4]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   21:     0x56129091f389 - std[77c0456e0eb29f0c]::sys_common::backtrace::__rust_begin_short_backtrace::<fn() -> core[ee1ca6415511a9c4]::result::Result<(), alloc[cda43b294bbfc5d0]::boxed::Box<dyn std[77c0456e0eb29f0c]::error::Error>>, core[ee1ca6415511a9c4]::result::Result<(), alloc[cda43b294bbfc5d0]::boxed::Box<dyn std[77c0456e0eb29f0c]::error::Error>>>
[INFO] [stdout]   22:     0x56129091f5cc - std[77c0456e0eb29f0c]::rt::lang_start::<core[ee1ca6415511a9c4]::result::Result<(), alloc[cda43b294bbfc5d0]::boxed::Box<dyn std[77c0456e0eb29f0c]::error::Error>>>::{closure#0}
[INFO] [stdout]   23:     0x56129093d4a9 - <&dyn core[ee1ca6415511a9c4]::ops::function::Fn<(), Output = i32> + std[77c0456e0eb29f0c]::panic::RefUnwindSafe + core[ee1ca6415511a9c4]::marker::Sync as core[ee1ca6415511a9c4]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/core/src/ops/function.rs:259:13
[INFO] [stdout]   24:     0x56129093d4a9 - std[77c0456e0eb29f0c]::panicking::try::do_call::<&dyn core[ee1ca6415511a9c4]::ops::function::Fn<(), Output = i32> + std[77c0456e0eb29f0c]::panic::RefUnwindSafe + core[ee1ca6415511a9c4]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:401:40
[INFO] [stdout]   25:     0x56129093d4a9 - std[77c0456e0eb29f0c]::panicking::try::<i32, &dyn core[ee1ca6415511a9c4]::ops::function::Fn<(), Output = i32> + std[77c0456e0eb29f0c]::panic::RefUnwindSafe + core[ee1ca6415511a9c4]::marker::Sync>
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panicking.rs:365:19
[INFO] [stdout]   26:     0x56129093d4a9 - std[77c0456e0eb29f0c]::panic::catch_unwind::<&dyn core[ee1ca6415511a9c4]::ops::function::Fn<(), Output = i32> + std[77c0456e0eb29f0c]::panic::RefUnwindSafe + core[ee1ca6415511a9c4]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/panic.rs:433:14
[INFO] [stdout]   27:     0x56129093d4a9 - std[77c0456e0eb29f0c]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/ce59db7a1b1b012fb2793c4641c1bdecad7a128b/library/std/src/rt.rs:34:21
[INFO] [stdout]   28:     0x56129091ecc1 - std[77c0456e0eb29f0c]::rt::lang_start::<core[ee1ca6415511a9c4]::result::Result<(), alloc[cda43b294bbfc5d0]::boxed::Box<dyn std[77c0456e0eb29f0c]::error::Error>>>
[INFO] [stdout]   29:     0x561290921ea3 - main
[INFO] [stdout]   30:     0x7f5a432590b3 - __libc_start_main
[INFO] [stdout]   31:     0x56129091e74e - _start
[INFO] [stdout]   32:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/lib.rs - (line 17)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.43s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--doc'
[INFO] running `Command { std: "docker" "inspect" "f7d321d5f818474a72809951d66d0b412a503a871c94afafdc7f6f00b0ef01dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f7d321d5f818474a72809951d66d0b412a503a871c94afafdc7f6f00b0ef01dc", kill_on_drop: false }`
[INFO] [stdout] f7d321d5f818474a72809951d66d0b412a503a871c94afafdc7f6f00b0ef01dc