[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 master#ab1d2444533d829e2d5cff6634cd3c70de6d7103 for pr-147841
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FCaellian%2Ftypelist" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] removed /workspace/builds/worker-6-tc1/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-6-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Caellian/typelist on toolchain ab1d2444533d829e2d5cff6634cd3c70de6d7103
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "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" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded prettyplease v0.2.22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cae843ff9661099665fe1fc882fdd6a3fc30dfc80fced93352bb353df9478369
[INFO] running `Command { std: "docker" "start" "-a" "cae843ff9661099665fe1fc882fdd6a3fc30dfc80fced93352bb353df9478369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cae843ff9661099665fe1fc882fdd6a3fc30dfc80fced93352bb353df9478369", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cae843ff9661099665fe1fc882fdd6a3fc30dfc80fced93352bb353df9478369", kill_on_drop: false }`
[INFO] [stdout] cae843ff9661099665fe1fc882fdd6a3fc30dfc80fced93352bb353df9478369
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ab1d2444533d829e2d5cff6634cd3c70de6d7103" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1e28f5bae7c944e81e755e22424f9a6fb2aaf7c626b50b74bac3f74ce9ac1bfb
[INFO] running `Command { std: "docker" "start" "-a" "1e28f5bae7c944e81e755e22424f9a6fb2aaf7c626b50b74bac3f74ce9ac1bfb", 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]    Compiling 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-ff31631c1ad06760/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (232) 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:     0x60248c6239c2 - std::backtrace_rs::backtrace::libunwind::trace::h8ff8ed9a2997adee
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x60248c6239c2 - std::backtrace_rs::backtrace::trace_unsynchronized::hed1a09eb7aa4d69d
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x60248c6239c2 - std::sys::backtrace::_print_fmt::h9e4137979f16bff6
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x60248c6239c2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h39198dc7b88a6264
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x60248c63325f - core::fmt::rt::Argument::fmt::ha35577891ca60f27
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x60248c63325f - core::fmt::write::h1feffd9edbf28871
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/core/src/fmt/mod.rs:1469:25
[INFO] [stderr]      6:     0x60248c601dc3 - std::io::default_write_fmt::h347712ff49bfbf12
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x60248c601dc3 - std::io::Write::write_fmt::hd27a6921afe7d834
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x60248c606f12 - std::sys::backtrace::BacktraceLock::print::h961c13e46d2559db
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x60248c608a4f - std::panicking::default_hook::{{closure}}::h9e26b7a9f26ef0f4
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x60248c6088a9 - std::panicking::default_hook::h7822050d3461aa91
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x60248c6090d5 - std::panicking::panic_with_hook::he8a7473937e4114e
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x60248c608eba - std::panicking::panic_handler::{{closure}}::h66b2f3d5eca25e0f
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x60248c607049 - std::sys::backtrace::__rust_end_short_backtrace::haba2f568b7898700
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x60248c5f652d - __rustc[716419831ecda59c]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x60248c636c40 - core::panicking::panic_fmt::h3666742ec1d80fc9
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x60248c6362c6 - core::result::unwrap_failed::h6400d81a57c9cc43
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/core/src/result.rs:1855:5
[INFO] [stderr]     17:     0x60248c4777d9 - variadic_t_codegen::generate::h616c03451b25974a
[INFO] [stderr]     18:     0x60248c4775a7 - build_script_build::main::h7d50e9c12fd6095e
[INFO] [stderr]     19:     0x60248c478353 - core::ops::function::FnOnce::call_once::h81071cf176db35bf
[INFO] [stderr]     20:     0x60248c477e96 - std::sys::backtrace::__rust_begin_short_backtrace::hd9283b2900d4e041
[INFO] [stderr]     21:     0x60248c477df9 - std::rt::lang_start::{{closure}}::h77cb9eae9769e73c
[INFO] [stderr]     22:     0x60248c602f10 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h3fc3eb98af770074
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     23:     0x60248c602f10 - std::panicking::catch_unwind::do_call::hf212a2d02687e140
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:590:40
[INFO] [stderr]     24:     0x60248c602f10 - std::panicking::catch_unwind::h69acb780f4fb28f3
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:553:19
[INFO] [stderr]     25:     0x60248c602f10 - std::panic::catch_unwind::hba49dfb5f7e9d25f
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panic.rs:359:14
[INFO] [stderr]     26:     0x60248c602f10 - std::rt::lang_start_internal::{{closure}}::h07b7f108d3d4f8c5
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/rt.rs:175:24
[INFO] [stderr]     27:     0x60248c602f10 - std::panicking::catch_unwind::do_call::h1bbac4c6c846794c
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:590:40
[INFO] [stderr]     28:     0x60248c602f10 - std::panicking::catch_unwind::ha09f309240d1a0bb
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panicking.rs:553:19
[INFO] [stderr]     29:     0x60248c602f10 - std::panic::catch_unwind::hda124fd3418f6d1e
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/panic.rs:359:14
[INFO] [stderr]     30:     0x60248c602f10 - std::rt::lang_start_internal::hfe7899fc6459cca4
[INFO] [stderr]                                  at /rustc/ab1d2444533d829e2d5cff6634cd3c70de6d7103/library/std/src/rt.rs:171:5
[INFO] [stderr]     31:     0x60248c477de1 - std::rt::lang_start::h029fd72153fee311
[INFO] [stderr]     32:     0x60248c478da5 - main
[INFO] [stderr]     33:     0x7084905d71ca - <unknown>
[INFO] [stderr]     34:     0x7084905d728b - __libc_start_main
[INFO] [stderr]     35:     0x60248c4773b5 - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "1e28f5bae7c944e81e755e22424f9a6fb2aaf7c626b50b74bac3f74ce9ac1bfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e28f5bae7c944e81e755e22424f9a6fb2aaf7c626b50b74bac3f74ce9ac1bfb", kill_on_drop: false }`
[INFO] [stdout] 1e28f5bae7c944e81e755e22424f9a6fb2aaf7c626b50b74bac3f74ce9ac1bfb
