[INFO] cloning repository https://github.com/Caellian/typelist
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Caellian/typelist" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaellian%2Ftypelist", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaellian%2Ftypelist'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8d7254c8ed77f46609cb0ac5b6d181118df194a6
[INFO] checking Caellian/typelist against try#18c1d185ac7a6a3bf399296b35e4b2736809a756 for pr-146972
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaellian%2Ftypelist" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-3-tc2/source/.cargo/config.toml
[INFO] started tweaking git repo https://github.com/Caellian/typelist
[INFO] finished tweaking git repo https://github.com/Caellian/typelist
[INFO] tweaked toml for git repo https://github.com/Caellian/typelist written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Caellian/typelist on toolchain 18c1d185ac7a6a3bf399296b35e4b2736809a756
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Caellian/typelist 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" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e80e3c961de643e4a171e7aa7817d39b8d81d073f89ac4ad4e3a99cca4f3a57b
[INFO] running `Command { std: "docker" "start" "-a" "e80e3c961de643e4a171e7aa7817d39b8d81d073f89ac4ad4e3a99cca4f3a57b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e80e3c961de643e4a171e7aa7817d39b8d81d073f89ac4ad4e3a99cca4f3a57b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e80e3c961de643e4a171e7aa7817d39b8d81d073f89ac4ad4e3a99cca4f3a57b", kill_on_drop: false }`
[INFO] [stdout] e80e3c961de643e4a171e7aa7817d39b8d81d073f89ac4ad4e3a99cca4f3a57b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+18c1d185ac7a6a3bf399296b35e4b2736809a756" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b8c45c0dfc60d72539642d6d94a688c1939260012c9d31fc64390271d36b3cb1
[INFO] running `Command { std: "docker" "start" "-a" "b8c45c0dfc60d72539642d6d94a688c1939260012c9d31fc64390271d36b3cb1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.86
[INFO] [stderr]    Compiling prettyplease v0.2.22
[INFO] [stderr]     Checking unicode-ident v1.0.13
[INFO] [stderr]     Checking quote v1.0.37
[INFO] [stderr]     Checking syn v2.0.79
[INFO] [stderr]     Checking variadic-t-codegen v0.1.0 (/opt/rustwide/workdir/codegen)
[INFO] [stdout] warning: method `mapping_signatures` is never used
[INFO] [stdout]   --> codegen/src/mapping.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> TupleMappingTrait<'a> {
[INFO] [stdout]    | ------------------------------ method in this implementation
[INFO] [stdout] 20 |     fn mapping_signatures(&self, receiver: Receiver) -> impl Iterator<Item = Signature> + '_ {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fnonce_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 | pub fn fnonce_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | pub fn fn_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `mapping_signatures` is never used
[INFO] [stdout]   --> codegen/src/mapping.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> TupleMappingTrait<'a> {
[INFO] [stdout]    | ------------------------------ method in this implementation
[INFO] [stdout] 20 |     fn mapping_signatures(&self, receiver: Receiver) -> impl Iterator<Item = Signature> + '_ {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fnonce_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 | pub fn fnonce_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | pub fn fn_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking variadic-t-macros v0.1.0 (/opt/rustwide/workdir/macros)
[INFO] [stdout] warning: method `mapping_signatures` is never used
[INFO] [stdout]   --> codegen/src/mapping.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 19 | impl<'a> TupleMappingTrait<'a> {
[INFO] [stdout]    | ------------------------------ method in this implementation
[INFO] [stdout] 20 |     fn mapping_signatures(&self, receiver: Receiver) -> impl Iterator<Item = Signature> + '_ {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fnonce_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:292:8
[INFO] [stdout]     |
[INFO] [stdout] 292 | pub fn fnonce_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `fn_bound` is never used
[INFO] [stdout]    --> codegen/src/util.rs:296:8
[INFO] [stdout]     |
[INFO] [stdout] 296 | pub fn fn_bound(inputs: impl IntoIterator<Item = Type>, output: Type) -> TraitBound {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling variadic-t v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `variadic-t v0.1.0 (/opt/rustwide/workdir)`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/variadic-t-360e21c51c5fe28f/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (212) panicked at /opt/rustwide/workdir/codegen/src/lib.rs:96:48:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x56f58b825b32 - std[f5b73ab62149f354]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x56f58b825b32 - std[f5b73ab62149f354]::backtrace_rs::backtrace::trace_unsynchronized::<std[f5b73ab62149f354]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x56f58b825b32 - std[f5b73ab62149f354]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:68:9
[INFO] [stderr]      3:     0x56f58b825b32 - <<std[f5b73ab62149f354]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7c9bcc88e4c2614d]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:38:26
[INFO] [stderr]      4:     0x56f58b837647 - <core[7c9bcc88e4c2614d]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x56f58b837647 - core[7c9bcc88e4c2614d]::fmt::write
[INFO] [stderr]      6:     0x56f58b829bd6 - std[f5b73ab62149f354]::io::default_write_fmt::<std[f5b73ab62149f354]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x56f58b829bd6 - <std[f5b73ab62149f354]::sys::stdio::unix::Stderr as std[f5b73ab62149f354]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/io/mod.rs:1994:13
[INFO] [stderr]      8:     0x56f58b81097a - <std[f5b73ab62149f354]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:41:9
[INFO] [stderr]      9:     0x56f58b81097a - std[f5b73ab62149f354]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x56f58b821c01 - std[f5b73ab62149f354]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x56f58b821e6b - std[f5b73ab62149f354]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x56f58b810a38 - std[f5b73ab62149f354]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x56f58b8086f9 - std[f5b73ab62149f354]::sys::backtrace::__rust_end_short_backtrace::<std[f5b73ab62149f354]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/sys/backtrace.rs:176:18
[INFO] [stderr]     14:     0x56f58b81131d - __rustc[86b423d158974b9]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x56f58b837d8c - core[7c9bcc88e4c2614d]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x56f58b837b02 - core[7c9bcc88e4c2614d]::result::unwrap_failed
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/result.rs:1867:5
[INFO] [stderr]     17:     0x56f58b67688a - variadic_t_codegen[8847336df735b3e1]::generate::<&str>
[INFO] [stderr]     18:     0x56f58b677007 - build_script_build[ec12f6f698fb40ad]::main
[INFO] [stderr]     19:     0x56f58b677d53 - <fn() as core[7c9bcc88e4c2614d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     20:     0x56f58b676cc6 - std[f5b73ab62149f354]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     21:     0x56f58b676e29 - std[f5b73ab62149f354]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     22:     0x56f58b82110a - <&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe as core[7c9bcc88e4c2614d]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x56f58b82110a - std[f5b73ab62149f354]::panicking::catch_unwind::do_call::<&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:581:40
[INFO] [stderr]     24:     0x56f58b82110a - std[f5b73ab62149f354]::panicking::catch_unwind::<i32, &dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:544:19
[INFO] [stderr]     25:     0x56f58b82110a - std[f5b73ab62149f354]::panic::catch_unwind::<&dyn core[7c9bcc88e4c2614d]::ops::function::Fn<(), Output = i32> + core[7c9bcc88e4c2614d]::marker::Sync + core[7c9bcc88e4c2614d]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x56f58b82110a - std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x56f58b82110a - std[f5b73ab62149f354]::panicking::catch_unwind::do_call::<std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:581:40
[INFO] [stderr]     28:     0x56f58b82110a - std[f5b73ab62149f354]::panicking::catch_unwind::<isize, std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panicking.rs:544:19
[INFO] [stderr]     29:     0x56f58b82110a - std[f5b73ab62149f354]::panic::catch_unwind::<std[f5b73ab62149f354]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x56f58b82110a - std[f5b73ab62149f354]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/18c1d185ac7a6a3bf399296b35e4b2736809a756/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x56f58b676c41 - std[f5b73ab62149f354]::rt::lang_start::<()>
[INFO] [stderr]     32:     0x56f58b677db5 - main
[INFO] [stderr]     33:     0x766fe7d4d1ca - <unknown>
[INFO] [stderr]     34:     0x766fe7d4d28b - __libc_start_main
[INFO] [stderr]     35:     0x56f58b6765f5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "b8c45c0dfc60d72539642d6d94a688c1939260012c9d31fc64390271d36b3cb1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b8c45c0dfc60d72539642d6d94a688c1939260012c9d31fc64390271d36b3cb1", kill_on_drop: false }`
[INFO] [stdout] b8c45c0dfc60d72539642d6d94a688c1939260012c9d31fc64390271d36b3cb1
