[INFO] cloning repository https://github.com/rappet/welder
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rappet/welder" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frappet%2Fwelder", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frappet%2Fwelder'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 830a5e6172a332fcc6dfa87d7f1cc4b53626214e
[INFO] testing rappet/welder against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frappet%2Fwelder" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/rappet/welder on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/rappet/welder
[INFO] finished tweaking git repo https://github.com/rappet/welder
[INFO] tweaked toml for git repo https://github.com/rappet/welder written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/rappet/welder already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", 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] 27dae2081f5002517784cb8ca0ead57246200fa6999a7bc07e177c8e2a0568ad
[INFO] running `Command { std: "docker" "start" "-a" "27dae2081f5002517784cb8ca0ead57246200fa6999a7bc07e177c8e2a0568ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "27dae2081f5002517784cb8ca0ead57246200fa6999a7bc07e177c8e2a0568ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27dae2081f5002517784cb8ca0ead57246200fa6999a7bc07e177c8e2a0568ad", kill_on_drop: false }`
[INFO] [stdout] 27dae2081f5002517784cb8ca0ead57246200fa6999a7bc07e177c8e2a0568ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", 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] eaa9354556102bd604b876aaf76d245c894faf0d6c70af53a5ef9697cfd5a8fa
[INFO] running `Command { std: "docker" "start" "-a" "eaa9354556102bd604b876aaf76d245c894faf0d6c70af53a5ef9697cfd5a8fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling serde_derive v1.0.129
[INFO] [stderr]    Compiling serde v1.0.129
[INFO] [stderr]    Compiling libc v0.2.101
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling hashbrown v0.11.2
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling cfg-if v1.0.0
[INFO] [stderr]    Compiling quick-error v1.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling serde_json v1.0.66
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling os_str_bytes v3.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling humantime v1.3.0
[INFO] [stderr]    Compiling textwrap v0.14.2
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.4
[INFO] [stderr]    Compiling clap v3.0.0-beta.4
[INFO] [stderr]    Compiling serde_yaml v0.8.20
[INFO] [stderr]    Compiling toml v0.5.8
[INFO] [stderr]    Compiling welder v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0603]: module `export` is private
[INFO] [stdout]    --> src/types/task_identifier.rs:4:12
[INFO] [stdout]     |
[INFO] [stdout] 4   | use serde::export::Formatter;
[INFO] [stdout]     |            ^^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `export` is defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.129/src/lib.rs:275:5
[INFO] [stdout]     |
[INFO] [stdout] 275 | use self::__private as export;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0603]: module `export` is private
[INFO] [stdout]    --> src/types/task_identifier.rs:5:12
[INFO] [stdout]     |
[INFO] [stdout] 5   | use serde::export::fmt::Error;
[INFO] [stdout]     |            ^^^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `export` is defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/serde-1.0.129/src/lib.rs:275:5
[INFO] [stdout]     |
[INFO] [stdout] 275 | use self::__private as export;
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Display`
[INFO] [stdout]  --> src/types/task_identifier.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::path::Display;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::conf::Task`
[INFO] [stdout]  --> src/types/task_identifier.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use crate::conf::Task;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:53:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     match matches.subcommand() {
[INFO] [stdout]    |           -------------------- this expression has type `std::option::Option<(&str, &ArgMatches)>`
[INFO] [stdout] 53 |         ("version", Some(matches)) => commands::version::version_command(matches),
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::option::Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::option::Option<(&str, &ArgMatches)>`
[INFO] [stdout]              found tuple `(_, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0308]: mismatched types
[INFO] [stdout]   --> src/main.rs:54:9
[INFO] [stdout]    |
[INFO] [stdout] 52 |     match matches.subcommand() {
[INFO] [stdout]    |           -------------------- this expression has type `std::option::Option<(&str, &ArgMatches)>`
[INFO] [stdout] 53 |         ("version", Some(matches)) => commands::version::version_command(matches),
[INFO] [stdout] 54 |         ("check", Some(matches)) => commands::check::check_command(matches)?,
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^ expected enum `std::option::Option`, found tuple
[INFO] [stdout]    |
[INFO] [stdout]    = note: expected enum `std::option::Option<(&str, &ArgMatches)>`
[INFO] [stdout]              found tuple `(_, _)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0308, E0603.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0308`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `welder` due to 5 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "eaa9354556102bd604b876aaf76d245c894faf0d6c70af53a5ef9697cfd5a8fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eaa9354556102bd604b876aaf76d245c894faf0d6c70af53a5ef9697cfd5a8fa", kill_on_drop: false }`
[INFO] [stdout] eaa9354556102bd604b876aaf76d245c894faf0d6c70af53a5ef9697cfd5a8fa