[INFO] cloning repository https://github.com/Berteun/rust-toy-list [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Berteun/rust-toy-list" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBerteun%2Frust-toy-list", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBerteun%2Frust-toy-list'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 8c02b9732a93b89c6528d053069dafac7f7b6bfe [INFO] checking Berteun/rust-toy-list against try#c8bdaa84ec1b37f18f30375e196a65b7602f3790 for pr-73345 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBerteun%2Frust-toy-list" "/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/Berteun/rust-toy-list on toolchain c8bdaa84ec1b37f18f30375e196a65b7602f3790 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Berteun/rust-toy-list [INFO] finished tweaking git repo https://github.com/Berteun/rust-toy-list [INFO] tweaked toml for git repo https://github.com/Berteun/rust-toy-list written to /workspace/builds/worker-2/source/Cargo.toml [INFO] crate git repo https://github.com/Berteun/rust-toy-list already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "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] 729edfc119a327ce49af753465bb0f24a1cb5441c7a9902d83db31a1eac0ac52 [INFO] running `Command { std: "docker" "start" "-a" "729edfc119a327ce49af753465bb0f24a1cb5441c7a9902d83db31a1eac0ac52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "729edfc119a327ce49af753465bb0f24a1cb5441c7a9902d83db31a1eac0ac52", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "729edfc119a327ce49af753465bb0f24a1cb5441c7a9902d83db31a1eac0ac52", kill_on_drop: false }` [INFO] [stdout] 729edfc119a327ce49af753465bb0f24a1cb5441c7a9902d83db31a1eac0ac52 [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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:6c9ffe128752d56c8d75334ed354142a5229917ed99767f56566dd8e857ad726" "/opt/rustwide/cargo-home/bin/cargo" "+c8bdaa84ec1b37f18f30375e196a65b7602f3790" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 004ef76eade263e138bd4b463a2cbd92d2f256bfb1a95dfc1f38e67968681eac [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" "004ef76eade263e138bd4b463a2cbd92d2f256bfb1a95dfc1f38e67968681eac", kill_on_drop: false }` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Checking reverse v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: private type `list::Node` in public interface (error E0446) [INFO] [stdout] --> src/list/mod.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | / pub fn first(&self) -> Option<&Node> [INFO] [stdout] 66 | | { [INFO] [stdout] 67 | | match self.head [INFO] [stdout] 68 | | { [INFO] [stdout] ... | [INFO] [stdout] 71 | | } [INFO] [stdout] 72 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(private_in_public)]` on by default [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 #34537 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: private type `list::Node` in public interface (error E0446) [INFO] [stdout] --> src/list/mod.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | / pub fn last(&self) -> Option<&Node> [INFO] [stdout] 75 | | { [INFO] [stdout] 76 | | match self.head { [INFO] [stdout] 77 | | Some(ref boxed_node) => Some(boxed_node.last()), [INFO] [stdout] 78 | | None => None [INFO] [stdout] 79 | | } [INFO] [stdout] 80 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [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 #34537 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/list/mod.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 110 | mem::replace(self, new_list); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: private type `list::Node` in public interface (error E0446) [INFO] [stdout] --> src/list/mod.rs:65:5 [INFO] [stdout] | [INFO] [stdout] 65 | / pub fn first(&self) -> Option<&Node> [INFO] [stdout] 66 | | { [INFO] [stdout] 67 | | match self.head [INFO] [stdout] 68 | | { [INFO] [stdout] ... | [INFO] [stdout] 71 | | } [INFO] [stdout] 72 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(private_in_public)]` on by default [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 #34537 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: private type `list::Node` in public interface (error E0446) [INFO] [stdout] --> src/list/mod.rs:74:5 [INFO] [stdout] | [INFO] [stdout] 74 | / pub fn last(&self) -> Option<&Node> [INFO] [stdout] 75 | | { [INFO] [stdout] 76 | | match self.head { [INFO] [stdout] 77 | | Some(ref boxed_node) => Some(boxed_node.last()), [INFO] [stdout] 78 | | None => None [INFO] [stdout] 79 | | } [INFO] [stdout] 80 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [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 #34537 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/list/mod.rs:110:9 [INFO] [stdout] | [INFO] [stdout] 110 | mem::replace(self, new_list); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.43s [INFO] running `Command { std: "docker" "inspect" "004ef76eade263e138bd4b463a2cbd92d2f256bfb1a95dfc1f38e67968681eac", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "004ef76eade263e138bd4b463a2cbd92d2f256bfb1a95dfc1f38e67968681eac", kill_on_drop: false }` [INFO] [stdout] 004ef76eade263e138bd4b463a2cbd92d2f256bfb1a95dfc1f38e67968681eac