[INFO] fetching crate fmt2 0.3.4...
[INFO] checking fmt2-0.3.4 against try#7b3da9103634dffd4f4365cfd8642427c781d99f+rustflags=-Dinherent-method-on-receiver for 152214-denied-retry-0
[INFO] extracting crate fmt2 0.3.4 into /workspace/builds/worker-4-tc2/source
[INFO] removed /workspace/builds/worker-4-tc2/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate fmt2 0.3.4
[INFO] finished tweaking crates.io crate fmt2 0.3.4
[INFO] tweaked toml for crates.io crate fmt2 0.3.4 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fmt2 0.3.4 on toolchain 7b3da9103634dffd4f4365cfd8642427c781d99f
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fmt2 0.3.4 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" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b6c92b4d5ce37f37df4438b2a2fff7da7753c87e741ed3feab19e90a5fe3540
[INFO] running `Command { std: "docker" "start" "-a" "2b6c92b4d5ce37f37df4438b2a2fff7da7753c87e741ed3feab19e90a5fe3540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b6c92b4d5ce37f37df4438b2a2fff7da7753c87e741ed3feab19e90a5fe3540", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b6c92b4d5ce37f37df4438b2a2fff7da7753c87e741ed3feab19e90a5fe3540", kill_on_drop: false }`
[INFO] [stdout] 2b6c92b4d5ce37f37df4438b2a2fff7da7753c87e741ed3feab19e90a5fe3540
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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 -Dinherent-method-on-receiver" "-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@sha256:61361fe0aef631f17e9d025a70c5a647956f8c671dd02950a60ad3f5cc5526d7" "/opt/rustwide/cargo-home/bin/cargo" "+7b3da9103634dffd4f4365cfd8642427c781d99f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bf6f1adcfa3b02605a10a4ca7a34637536e26df4f376e9b6c4cd1c4e4ffc5c60
[INFO] running `Command { std: "docker" "start" "-a" "bf6f1adcfa3b02605a10a4ca7a34637536e26df4f376e9b6c4cd1c4e4ffc5c60", kill_on_drop: false }`
[INFO] [stderr]     Checking transmute_guard v0.2.5
[INFO] [stderr]     Checking fmt2 v0.3.4 (/opt/rustwide/workdir)
[INFO] [stderr] error: rustc interrupted by SIGSEGV, printing backtrace
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x3be6eac)[0x7b509d9e6eac]
[INFO] [stderr] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x7b5099c33330]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(_RNvMs2_NtNtCsjAbp16HxRDa_12rustc_middle5infer9canonicalNtB5_22CanonicalParamEnvCache13get_or_insert+0x1)[0x7b509fa1c2c5]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(_RNvXNtNtNtCsjIlkQqW9l5j_21rustc_trait_selection6traits5query19evaluate_obligationNtNtCs7nGmKpHlVuG_11rustc_infer5infer9InferCtxtNtB2_12InferCtxtExt19evaluate_obligation+0xab)[0x7b509fa21677]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c215b3)[0x7b509fa215b3]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c21147)[0x7b509fa21147]
[INFO] [stderr] 
[INFO] [stderr] ### cycle encountered after 6 frames with period 7
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] ### recursed 35 times
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x7b509fa2123f]
[INFO] [stderr] 
[INFO] [stderr] note: rustc unexpectedly overflowed its stack! this is a bug
[INFO] [stderr] note: maximum backtrace depth reached, frames may have been lost
[INFO] [stderr] note: we would appreciate a report at https://github.com/rust-lang/rust
[INFO] [stderr] help: you can increase rustc's stack size by setting RUST_MIN_STACK=16777216
[INFO] [stderr] note: backtrace dumped due to SIGSEGV! resuming signal
[INFO] [stderr] error: rustc interrupted by SIGSEGV, printing backtrace
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x3be6eac)[0x75e4c69e6eac]
[INFO] [stderr] /lib/x86_64-linux-gnu/libc.so.6(+0x45330)[0x75e4c2c33330]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(_RNvMs2_NtNtCsjAbp16HxRDa_12rustc_middle5infer9canonicalNtB5_22CanonicalParamEnvCache13get_or_insert+0x1)[0x75e4c8a1c2c5]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(_RNvXNtNtNtCsjIlkQqW9l5j_21rustc_trait_selection6traits5query19evaluate_obligationNtNtCs7nGmKpHlVuG_11rustc_infer5infer9InferCtxtNtB2_12InferCtxtExt19evaluate_obligation+0xab)[0x75e4c8a21677]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c215b3)[0x75e4c8a215b3]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c21147)[0x75e4c8a21147]
[INFO] [stderr] 
[INFO] [stderr] ### cycle encountered after 6 frames with period 7
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] ### recursed 35 times
[INFO] [stderr] 
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] /opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/lib/librustc_driver-f1648b227b39fd9f.so(+0x5c2123f)[0x75e4c8a2123f]
[INFO] [stderr] 
[INFO] [stderr] note: rustc unexpectedly overflowed its stack! this is a bug
[INFO] [stderr] note: maximum backtrace depth reached, frames may have been lost
[INFO] [stderr] note: we would appreciate a report at https://github.com/rust-lang/rust
[INFO] [stderr] help: you can increase rustc's stack size by setting RUST_MIN_STACK=16777216
[INFO] [stderr] note: backtrace dumped due to SIGSEGV! resuming signal
[INFO] [stderr] error: could not compile `fmt2` (lib test)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/bin/rustc --crate-name fmt2 --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --test --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("ascii", "ascii_char_variants", "default", "dev_all_prompts_nightly", "dev_nightly", "dev_stable", "event", "fmt_internals", "info_prompt", "never_type", "nightly", "prompt", "screen_area", "select_prompt", "std", "terminal", "unsigned_int_prompt"))' -C metadata=e725500e95d6303e -C extra-filename=-09d27a2dcd796a21 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern transmute_guard=/opt/rustwide/target/debug/deps/libtransmute_guard-4a999e01c7dd5e81.rmeta --cap-lints=forbid -Dinherent-method-on-receiver` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not compile `fmt2` (lib)
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/7b3da9103634dffd4f4365cfd8642427c781d99f/bin/rustc --crate-name fmt2 --edition=2021 src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 --cfg 'feature="default"' --cfg 'feature="std"' --check-cfg 'cfg(docsrs,test)' --check-cfg 'cfg(feature, values("ascii", "ascii_char_variants", "default", "dev_all_prompts_nightly", "dev_nightly", "dev_stable", "event", "fmt_internals", "info_prompt", "never_type", "nightly", "prompt", "screen_area", "select_prompt", "std", "terminal", "unsigned_int_prompt"))' -C metadata=c29d9152c3dba066 -C extra-filename=-713da9097be8b1d5 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern transmute_guard=/opt/rustwide/target/debug/deps/libtransmute_guard-4a999e01c7dd5e81.rmeta --cap-lints=forbid -Dinherent-method-on-receiver` (signal: 11, SIGSEGV: invalid memory reference)
[INFO] running `Command { std: "docker" "inspect" "bf6f1adcfa3b02605a10a4ca7a34637536e26df4f376e9b6c4cd1c4e4ffc5c60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf6f1adcfa3b02605a10a4ca7a34637536e26df4f376e9b6c4cd1c4e4ffc5c60", kill_on_drop: false }`
[INFO] [stdout] bf6f1adcfa3b02605a10a4ca7a34637536e26df4f376e9b6c4cd1c4e4ffc5c60