[INFO] cloning repository https://github.com/mkadit/rust_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mkadit/rust_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkadit%2Frust_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkadit%2Frust_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 90a6a3ba8c579f6e31c7acc9c70fa1074d3756db
[INFO] building mkadit/rust_test against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmkadit%2Frust_test" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mkadit/rust_test on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mkadit/rust_test
[INFO] finished tweaking git repo https://github.com/mkadit/rust_test
[INFO] tweaked toml for git repo https://github.com/mkadit/rust_test written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mkadit/rust_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--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 text_io v0.1.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c6ce3b32e39cdfd4b559e6911ac7691c44307c0f671362ff3bd91fc2c767a336
[INFO] running `Command { std: "docker" "start" "-a" "c6ce3b32e39cdfd4b559e6911ac7691c44307c0f671362ff3bd91fc2c767a336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c6ce3b32e39cdfd4b559e6911ac7691c44307c0f671362ff3bd91fc2c767a336", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c6ce3b32e39cdfd4b559e6911ac7691c44307c0f671362ff3bd91fc2c767a336", kill_on_drop: false }`
[INFO] [stdout] c6ce3b32e39cdfd4b559e6911ac7691c44307c0f671362ff3bd91fc2c767a336
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 47216ea4dbc61187f32da3d2a4ab6a2a069d7bf0f3e8b3cb639f8a75fe395527
[INFO] running `Command { std: "docker" "start" "-a" "47216ea4dbc61187f32da3d2a4ab6a2a069d7bf0f3e8b3cb639f8a75fe395527", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]    Compiling ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling text_io v0.1.8
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling first_new v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/Java_Rework/lab2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `text_io::read`
[INFO] [stdout]  --> src/Java_Rework/lab2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use text_io::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `text_io::read`
[INFO] [stdout]  --> src/Java_Rework/tp2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use text_io::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut y = string_to_node(x);
[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: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/linked_list.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct LinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/linked_list.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl LinkedList {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Link` is never used
[INFO] [stdout]   --> src/linked_list.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Link {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/linked_list.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Link` is never used
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Link {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_curr` is never used
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn remove_curr(&mut self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `distance`, `routes`, and `shortest_path` are never read
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Store {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 33 |     name: String,
[INFO] [stdout] 34 |     distance: i32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 35 |     routes: HashMap<String, Road>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 36 |     exclusive_route: HashMap<String, Road>,
[INFO] [stdout] 37 |     shortest_path: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Store` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `road`, `coupon`, and `time` are never read
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct Road {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 60 |     road: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 61 |     coupon: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 62 |     time: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Road` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Town` is never constructed
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct Town {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.85s
[INFO] running `Command { std: "docker" "inspect" "47216ea4dbc61187f32da3d2a4ab6a2a069d7bf0f3e8b3cb639f8a75fe395527", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47216ea4dbc61187f32da3d2a4ab6a2a069d7bf0f3e8b3cb639f8a75fe395527", kill_on_drop: false }`
[INFO] [stdout] 47216ea4dbc61187f32da3d2a4ab6a2a069d7bf0f3e8b3cb639f8a75fe395527
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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 -Dtail-expr-drop-order" "-e" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 309f0e6054fbc2aaf1d07062a1b5005745bbad00b5ced547de4c1456acbdea75
[INFO] running `Command { std: "docker" "start" "-a" "309f0e6054fbc2aaf1d07062a1b5005745bbad00b5ced547de4c1456acbdea75", kill_on_drop: false }`
[INFO] [stderr]    Compiling first_new v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/Java_Rework/lab2.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `text_io::read`
[INFO] [stdout]  --> src/Java_Rework/lab2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use text_io::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `text_io::read`
[INFO] [stdout]  --> src/Java_Rework/tp2.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use text_io::read;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout] 10 |     let mut y = string_to_node(x);
[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: struct `LinkedList` is never constructed
[INFO] [stdout]  --> src/linked_list.rs:2:8
[INFO] [stdout]   |
[INFO] [stdout] 2 | struct LinkedList {
[INFO] [stdout]   |        ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]  --> src/linked_list.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | impl LinkedList {
[INFO] [stdout]   | --------------- associated function in this implementation
[INFO] [stdout] 6 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Link` is never used
[INFO] [stdout]   --> src/linked_list.rs:11:6
[INFO] [stdout]    |
[INFO] [stdout] 11 | enum Link {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Node` is never constructed
[INFO] [stdout]   --> src/linked_list.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 | struct Node {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Link` is never used
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:19:6
[INFO] [stdout]    |
[INFO] [stdout] 19 | enum Link {
[INFO] [stdout]    |      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `remove_curr` is never used
[INFO] [stdout]   --> src/Java_Rework/lab2.rs:28:8
[INFO] [stdout]    |
[INFO] [stdout] 24 | impl Node {
[INFO] [stdout]    | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 28 |     fn remove_curr(&mut self) {}
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `distance`, `routes`, and `shortest_path` are never read
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:34:5
[INFO] [stdout]    |
[INFO] [stdout] 32 | struct Store {
[INFO] [stdout]    |        ----- fields in this struct
[INFO] [stdout] 33 |     name: String,
[INFO] [stdout] 34 |     distance: i32,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 35 |     routes: HashMap<String, Road>,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 36 |     exclusive_route: HashMap<String, Road>,
[INFO] [stdout] 37 |     shortest_path: Vec<String>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Store` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `road`, `coupon`, and `time` are never read
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:60:5
[INFO] [stdout]    |
[INFO] [stdout] 59 | struct Road {
[INFO] [stdout]    |        ---- fields in this struct
[INFO] [stdout] 60 |     road: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 61 |     coupon: i32,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 62 |     time: i32,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Road` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Town` is never constructed
[INFO] [stdout]   --> src/Java_Rework/tp2.rs:71:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | struct Town {}
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "309f0e6054fbc2aaf1d07062a1b5005745bbad00b5ced547de4c1456acbdea75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "309f0e6054fbc2aaf1d07062a1b5005745bbad00b5ced547de4c1456acbdea75", kill_on_drop: false }`
[INFO] [stdout] 309f0e6054fbc2aaf1d07062a1b5005745bbad00b5ced547de4c1456acbdea75