[INFO] cloning repository https://github.com/nelhage/feature-in-mod
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nelhage/feature-in-mod" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelhage%2Ffeature-in-mod", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelhage%2Ffeature-in-mod'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ceb2d2e6646635f5161c3a99739889e4d0092eef
[INFO] checking nelhage/feature-in-mod against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnelhage%2Ffeature-in-mod" "/workspace/builds/worker-60/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-60/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nelhage/feature-in-mod on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nelhage/feature-in-mod
[INFO] finished tweaking git repo https://github.com/nelhage/feature-in-mod
[INFO] tweaked toml for git repo https://github.com/nelhage/feature-in-mod written to /workspace/builds/worker-60/source/Cargo.toml
[INFO] crate git repo https://github.com/nelhage/feature-in-mod already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 892b3fbd33857f77958c04c5f5b54e257680e696b8022306a2ca49fe40cee1a0
[INFO] running `Command { std: "docker" "start" "-a" "892b3fbd33857f77958c04c5f5b54e257680e696b8022306a2ca49fe40cee1a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "892b3fbd33857f77958c04c5f5b54e257680e696b8022306a2ca49fe40cee1a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "892b3fbd33857f77958c04c5f5b54e257680e696b8022306a2ca49fe40cee1a0", kill_on_drop: false }`
[INFO] [stdout] 892b3fbd33857f77958c04c5f5b54e257680e696b8022306a2ca49fe40cee1a0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-60/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=warn" "-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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a370b707b296dc2a7715c2cd9b261dc5a09aa9c7c1df1ff577d88edf5556b91d
[INFO] running `Command { std: "docker" "start" "-a" "a370b707b296dc2a7715c2cd9b261dc5a09aa9c7c1df1ff577d88edf5556b91d", kill_on_drop: false }`
[INFO] [stderr]     Checking feature-in-mod v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]  --> src/transform.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |         AST::Add(box AST::Add(ll, lr), r) => AST::Add(ll, Box::new(AST::Add(lr, r))),
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]  --> src/transform.rs:7:18
[INFO] [stdout]   |
[INFO] [stdout] 7 |         AST::Add(box AST::Add(ll, lr), r) => AST::Add(ll, Box::new(AST::Add(lr, r))),
[INFO] [stdout]   |                  ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `feature-in-mod` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "a370b707b296dc2a7715c2cd9b261dc5a09aa9c7c1df1ff577d88edf5556b91d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a370b707b296dc2a7715c2cd9b261dc5a09aa9c7c1df1ff577d88edf5556b91d", kill_on_drop: false }`
[INFO] [stdout] a370b707b296dc2a7715c2cd9b261dc5a09aa9c7c1df1ff577d88edf5556b91d
