[INFO] cloning repository https://github.com/Pavlos-Efstathiou/firework_lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Pavlos-Efstathiou/firework_lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPavlos-Efstathiou%2Ffirework_lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPavlos-Efstathiou%2Ffirework_lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 485572dade7873c04caf1bc281af2c965d529366
[INFO] checking Pavlos-Efstathiou/firework_lang against 40527f3e444fde1deb361751bdef9b9e11d1b971+rustflags=--cfg crater_hack --force-warn invalid-c-variadic-arguments for pr-162478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FPavlos-Efstathiou%2Ffirework_lang" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Pavlos-Efstathiou/firework_lang
[INFO] finished tweaking git repo https://github.com/Pavlos-Efstathiou/firework_lang
[INFO] tweaked toml for git repo https://github.com/Pavlos-Efstathiou/firework_lang written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Pavlos-Efstathiou/firework_lang on toolchain 40527f3e444fde1deb361751bdef9b9e11d1b971
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Pavlos-Efstathiou/firework_lang 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" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: binary `firework_lang` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /workspace/builds/worker-4-tc2/source/target/.../firework_lang
[INFO] [stderr]    |                                                  ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `firework-lang`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 - name = "firework_lang"
[INFO] [stderr] 23 + name = "firework-lang"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `firework-lang`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 ~ version = "0.3.5"
[INFO] [stderr] 27 + [[bin]]
[INFO] [stderr] 28 + name = "firework-lang"
[INFO] [stderr] 29 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `firework_lang` (manifest) generated 2 warnings
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601
[INFO] running `Command { std: "docker" "start" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid --cfg crater_hack --force-warn invalid-c-variadic-arguments" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601" "/opt/rustwide/cargo-home/bin/cargo" "+40527f3e444fde1deb361751bdef9b9e11d1b971" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: explicit `package.readme` can be inferred
[INFO] [stderr]   --> Cargo.toml:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | readme = "README.md"
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::manual_readme` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.readme`
[INFO] [stderr] warning: binary `firework_lang` should have a kebab-case name
[INFO] [stderr]    |
[INFO] [stderr]  1 | /opt/rustwide/target/.../firework_lang
[INFO] [stderr]    |                          ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::non_kebab_case_bins` is set to `warn` by default
[INFO] [stderr] help: to change the binary name to `firework-lang`, convert `package.name`
[INFO] [stderr]   --> Cargo.toml:23:8
[INFO] [stderr]    |
[INFO] [stderr] 23 - name = "firework_lang"
[INFO] [stderr] 23 + name = "firework-lang"
[INFO] [stderr]    |
[INFO] [stderr] help: to change the binary name to `firework-lang`, specify `bin.name`
[INFO] [stderr]   --> Cargo.toml:26:19
[INFO] [stderr]    |
[INFO] [stderr] 26 ~ version = "0.3.5"
[INFO] [stderr] 27 + [[bin]]
[INFO] [stderr] 28 + name = "firework-lang"
[INFO] [stderr] 29 + path = "src/main.rs"
[INFO] [stderr]    |
[INFO] [stderr] warning: `firework_lang` (manifest) generated 2 warnings
[INFO] [stderr]    Compiling libc v0.2.113
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling cc v1.0.71
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling ucd-trie v0.1.3
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling pest v2.1.3
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.30
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]    Compiling syn v1.0.80
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]     Checking smallvec v1.7.0
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]    Compiling openssl-sys v0.9.72
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]     Checking mio v0.7.14
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]    Compiling semver-parser v0.10.2
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]     Checking tokio v1.15.0
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking futures-io v0.3.19
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling serde v1.0.133
[INFO] [stderr]    Compiling semver v0.11.0
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]     Checking tinyvec v1.5.1
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking openssl-probe v0.1.5
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]     Checking unicode-normalization v0.1.19
[INFO] [stderr]     Checking socket2 v0.4.3
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]     Checking unicode-width v0.1.9
[INFO] [stderr]    Compiling serde_json v1.0.75
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking lock_api v0.4.5
[INFO] [stderr]    Compiling pest_meta v2.1.3
[INFO] [stderr]     Checking idna v0.2.3
[INFO] [stderr]     Checking h2 v0.3.10
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking terminal_size v0.1.17
[INFO] [stderr]     Checking dirs-sys-next v0.1.2
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking nibble_vec v0.1.0
[INFO] [stderr]    Compiling inkwell_llvm12 v0.1.0
[INFO] [stderr]     Checking endian-type v0.1.2
[INFO] [stderr]     Checking radix_trie v0.2.1
[INFO] [stderr]    Compiling llvm-sys v120.2.1
[INFO] [stderr]    Compiling pest_generator v2.1.3
[INFO] [stderr]     Checking console v0.15.0
[INFO] [stderr]     Checking dirs-next v2.0.0
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking nix v0.22.2
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking fd-lock v3.0.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking hyper v0.14.16
[INFO] [stderr]     Checking utf8parse v0.2.0
[INFO] [stderr]     Checking number_prefix v0.4.0
[INFO] [stderr]     Checking unicode-segmentation v1.8.0
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]    Compiling unindent v0.1.7
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking serde_urlencoded v0.7.1
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking indicatif v0.16.2
[INFO] [stderr]    Compiling indoc v1.0.3
[INFO] [stderr]    Compiling inkwell_internals v0.5.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking home v0.5.3
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking reqwest v0.11.9
[INFO] [stdout] error: CRATER ERROR: C-variadic argument with type `AtFlags`.
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.22.2/src/unistd.rs:853:56
[INFO] [stdout]     |
[INFO] [stdout] 853 |                       args_p.as_ptr(), env_p.as_ptr(), flags);
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `AtFlags` does not implement `VaArgSafe`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/nix-0.22.2/src/unistd.rs:853:56
[INFO] [stdout]     |
[INFO] [stdout] 853 |                       args_p.as_ptr(), env_p.as_ptr(), flags);
[INFO] [stdout]     |                                                        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: values passed as C-variadic arguments must implement `core::ffi::VaArgSafe`
[INFO] [stdout]     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stdout]     = note: for more information, see issue #162483 <https://github.com/rust-lang/rust/issues/162483>
[INFO] [stdout]     = note: requested on the command line with `--force-warn invalid-c-variadic-arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nix` (lib) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601", kill_on_drop: false }`
[INFO] [stdout] 139c9c416edcb3a4d84622eff11968b5dba9bfcb947bb05eb33bf188431eb601
