[INFO] cloning repository https://github.com/davidsullins/AdventOfRust2018 [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/davidsullins/AdventOfRust2018" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2018", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2018'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 6260e6579d36fd6f5e5d3fea48409ac92031ba04 [INFO] checking davidsullins/AdventOfRust2018 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdavidsullins%2FAdventOfRust2018" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/davidsullins/AdventOfRust2018 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/davidsullins/AdventOfRust2018 [INFO] finished tweaking git repo https://github.com/davidsullins/AdventOfRust2018 [INFO] tweaked toml for git repo https://github.com/davidsullins/AdventOfRust2018 written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/davidsullins/AdventOfRust2018 already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a7893ea105b7b0a2412cb48526a2a02c14191d781d66268d94f5dd0c169d0705 [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" "a7893ea105b7b0a2412cb48526a2a02c14191d781d66268d94f5dd0c169d0705", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7893ea105b7b0a2412cb48526a2a02c14191d781d66268d94f5dd0c169d0705", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7893ea105b7b0a2412cb48526a2a02c14191d781d66268d94f5dd0c169d0705", kill_on_drop: false }` [INFO] [stdout] a7893ea105b7b0a2412cb48526a2a02c14191d781d66268d94f5dd0c169d0705 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fc202b5917d60dc61369eacd50b598fcb7fc59273f70ae099aff96bc75eaf0de [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" "fc202b5917d60dc61369eacd50b598fcb7fc59273f70ae099aff96bc75eaf0de", kill_on_drop: false }` [INFO] [stderr] Compiling version_check v0.1.5 [INFO] [stderr] Compiling libc v0.2.44 [INFO] [stderr] Checking cfg-if v0.1.6 [INFO] [stderr] Checking lazy_static v1.2.0 [INFO] [stderr] Compiling regex v1.1.0 [INFO] [stderr] Checking ucd-util v0.1.3 [INFO] [stderr] Checking utf8-ranges v1.0.2 [INFO] [stderr] Checking bit-vec v0.5.0 [INFO] [stderr] Checking thread_local v0.3.6 [INFO] [stderr] Checking regex-syntax v0.6.4 [INFO] [stderr] Compiling memchr v2.1.1 [INFO] [stderr] Checking aho-corasick v0.6.9 [INFO] [stderr] Checking AdventOfRust2018 v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: cannot borrow `letter_count` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/day2.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 24 | let count = letter_count.get(&c).unwrap_or(&0); [INFO] [stdout] | ------------ immutable borrow occurs here [INFO] [stdout] 25 | letter_count.insert(c, count + 1); [INFO] [stdout] | ^^^^^^^^^^^^ ----- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `letter_count` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/bin/day2.rs:25:13 [INFO] [stdout] | [INFO] [stdout] 24 | let count = letter_count.get(&c).unwrap_or(&0); [INFO] [stdout] | ------------ immutable borrow occurs here [INFO] [stdout] 25 | letter_count.insert(c, count + 1); [INFO] [stdout] | ^^^^^^^^^^^^ ----- immutable borrow later used here [INFO] [stdout] | | [INFO] [stdout] | mutable borrow occurs here [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stdout] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stdout] = note: for more information, see issue #59159 [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 1 warning emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 11.43s [INFO] running `Command { std: "docker" "inspect" "fc202b5917d60dc61369eacd50b598fcb7fc59273f70ae099aff96bc75eaf0de", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fc202b5917d60dc61369eacd50b598fcb7fc59273f70ae099aff96bc75eaf0de", kill_on_drop: false }` [INFO] [stdout] fc202b5917d60dc61369eacd50b598fcb7fc59273f70ae099aff96bc75eaf0de