[INFO] cloning repository https://github.com/gilles-leblanc/reddish
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gilles-leblanc/reddish" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilles-leblanc%2Freddish", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilles-leblanc%2Freddish'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 039f209da5a6a3c4b1038f22cf20576d0eb8ace9
[INFO] checking gilles-leblanc/reddish against try#45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgilles-leblanc%2Freddish" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gilles-leblanc/reddish on toolchain 45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gilles-leblanc/reddish
[INFO] finished tweaking git repo https://github.com/gilles-leblanc/reddish
[INFO] tweaked toml for git repo https://github.com/gilles-leblanc/reddish written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/gilles-leblanc/reddish already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] de6e7c1b7c7aeac98cbb812bbc4ed28157557fdda950f281de2bc79960178826
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "de6e7c1b7c7aeac98cbb812bbc4ed28157557fdda950f281de2bc79960178826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "de6e7c1b7c7aeac98cbb812bbc4ed28157557fdda950f281de2bc79960178826", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "de6e7c1b7c7aeac98cbb812bbc4ed28157557fdda950f281de2bc79960178826", kill_on_drop: false }`
[INFO] [stdout] de6e7c1b7c7aeac98cbb812bbc4ed28157557fdda950f281de2bc79960178826
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+45d8b6e68beee1c9c1ce92ae258a7e02f8f13aa4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98e17346913860bdfdbe9dbe6ee71679b90e85f75e3ee2b80df03ddd35a63b86
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "98e17346913860bdfdbe9dbe6ee71679b90e85f75e3ee2b80df03ddd35a63b86", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking reddish_lib v0.0.1 (/opt/rustwide/workdir/src/lib)
[INFO] [stdout] warning: associated function is never used: `prepend`
[INFO] [stdout]  --> src/lib/enumlinkedlist.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 |     fn prepend(self, element: u32) -> EnumLinkedList {
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `append`
[INFO] [stdout]   --> src/lib/enumlinkedlist.rs:13:8
[INFO] [stdout]    |
[INFO] [stdout] 13 |     fn append(&mut self, element: u32) {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/lib/enumlinkedlist.rs:20:8
[INFO] [stdout]    |
[INFO] [stdout] 20 |     fn next(&self) -> &EnumLinkedList {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `value`
[INFO] [stdout]   --> src/lib/linkedlist.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 27 |     value: u32,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking reddish v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]   --> src/main.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Node(first_value, box ref second_node) => {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout]    = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]   --> src/main.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Node(_, box ref second_node) => {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout]    = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]   --> src/main.rs:16:27
[INFO] [stdout]    |
[INFO] [stdout] 16 |         Node(first_value, box ref second_node) => {
[INFO] [stdout]    |                           ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout]    = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0658]: box pattern syntax is experimental
[INFO] [stdout]   --> src/main.rs:26:17
[INFO] [stdout]    |
[INFO] [stdout] 26 |         Node(_, box ref second_node) => {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #29641 <https://github.com/rust-lang/rust/issues/29641> for more information
[INFO] [stdout]    = help: add `#![feature(box_patterns)]` to the crate attributes to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `reddish`
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0658`.
[INFO] [stdout] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "98e17346913860bdfdbe9dbe6ee71679b90e85f75e3ee2b80df03ddd35a63b86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98e17346913860bdfdbe9dbe6ee71679b90e85f75e3ee2b80df03ddd35a63b86", kill_on_drop: false }`
[INFO] [stdout] 98e17346913860bdfdbe9dbe6ee71679b90e85f75e3ee2b80df03ddd35a63b86