[INFO] cloning repository https://github.com/delosrogers/huffman-tree [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/delosrogers/huffman-tree" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdelosrogers%2Fhuffman-tree", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdelosrogers%2Fhuffman-tree'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 31d097d318b7ffdc4ea8294bda9624ed5db803de [INFO] checking delosrogers/huffman-tree against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdelosrogers%2Fhuffman-tree" "/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/delosrogers/huffman-tree on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/delosrogers/huffman-tree [INFO] finished tweaking git repo https://github.com/delosrogers/huffman-tree [INFO] tweaked toml for git repo https://github.com/delosrogers/huffman-tree written to /workspace/builds/worker-10/source/Cargo.toml [INFO] crate git repo https://github.com/delosrogers/huffman-tree already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded partial_application v0.2.1 [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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f2805327bbc09e8cfc2499dadd953f33c05558c83871ba28b98d14427ba90b54 [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" "f2805327bbc09e8cfc2499dadd953f33c05558c83871ba28b98d14427ba90b54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f2805327bbc09e8cfc2499dadd953f33c05558c83871ba28b98d14427ba90b54", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f2805327bbc09e8cfc2499dadd953f33c05558c83871ba28b98d14427ba90b54", kill_on_drop: false }` [INFO] [stdout] f2805327bbc09e8cfc2499dadd953f33c05558c83871ba28b98d14427ba90b54 [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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] fbe3da3f5724dbe18184e99dea6c5c551e33f4bef72a1621054afca2c30e63f8 [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" "fbe3da3f5724dbe18184e99dea6c5c551e33f4bef72a1621054afca2c30e63f8", kill_on_drop: false }` [INFO] [stderr] Checking partial_application v0.2.1 [INFO] [stderr] Checking mzip v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `path_for_current` is never read [INFO] [stdout] --> src/encode.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | let mut path_for_current = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let mut start_state = make_start_count_huffman_with_hash_map(&input); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `letters_map` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/tree.rs:12:28 [INFO] [stdout] | [INFO] [stdout] 11 | match letters_map.get(&i) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] 12 | Some(count) => letters_map.insert(i, *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: value assigned to `path_for_current` is never read [INFO] [stdout] --> src/encode.rs:11:13 [INFO] [stdout] | [INFO] [stdout] 11 | let mut path_for_current = Vec::new(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:46:9 [INFO] [stdout] | [INFO] [stdout] 46 | let mut start_state = make_start_count_huffman_with_hash_map(&input); [INFO] [stdout] | ----^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_mut)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: cannot borrow `letters_map` as mutable because it is also borrowed as immutable [INFO] [stdout] --> src/tree.rs:12:28 [INFO] [stdout] | [INFO] [stdout] 11 | match letters_map.get(&i) { [INFO] [stdout] | ----------- immutable borrow occurs here [INFO] [stdout] 12 | Some(count) => letters_map.insert(i, *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: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.07s [INFO] running `Command { std: "docker" "inspect" "fbe3da3f5724dbe18184e99dea6c5c551e33f4bef72a1621054afca2c30e63f8", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fbe3da3f5724dbe18184e99dea6c5c551e33f4bef72a1621054afca2c30e63f8", kill_on_drop: false }` [INFO] [stdout] fbe3da3f5724dbe18184e99dea6c5c551e33f4bef72a1621054afca2c30e63f8