[INFO] fetching crate unit10 0.1.0...
[INFO] building unit10-0.1.0 against master#c7f6aa2869acdbf014d094c6e427e554e160b6db for pr-146237-2
[INFO] extracting crate unit10 0.1.0 into /workspace/builds/worker-2-tc1/source
[INFO] started tweaking crates.io crate unit10 0.1.0
[INFO] finished tweaking crates.io crate unit10 0.1.0
[INFO] tweaked toml for crates.io crate unit10 0.1.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate unit10 0.1.0 on toolchain c7f6aa2869acdbf014d094c6e427e554e160b6db
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate unit10 0.1.0 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" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a083f4db47c3967f74db87c2888ab2bc01baaed65c0aa143264dbe9a362ec5ae
[INFO] running `Command { std: "docker" "start" "-a" "a083f4db47c3967f74db87c2888ab2bc01baaed65c0aa143264dbe9a362ec5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a083f4db47c3967f74db87c2888ab2bc01baaed65c0aa143264dbe9a362ec5ae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a083f4db47c3967f74db87c2888ab2bc01baaed65c0aa143264dbe9a362ec5ae", kill_on_drop: false }`
[INFO] [stdout] a083f4db47c3967f74db87c2888ab2bc01baaed65c0aa143264dbe9a362ec5ae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] deabab8cbf99cba8516bbbe4036c23aa1843f88c739d21b3b8a41b86a4de9f0f
[INFO] running `Command { std: "docker" "start" "-a" "deabab8cbf99cba8516bbbe4036c23aa1843f88c739d21b3b8a41b86a4de9f0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling unit10 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:166:40
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn announce_and_return_part(&self, t: &T) -> &T {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Point<X, Y> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_x`, `get_y`, `new`, and `change` are never used
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<X, Y> Point<X, Y> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 48 |     fn get_x(&self) -> &X {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn get_y(&self) -> &Y {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn new(x: X, y: Y) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn change<W, Z>(self, other: Point<W, Z>) -> Point<X, Z> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl Point<usize, char> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 77 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time` is never used
[INFO] [stdout]    --> src/main.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn life_time<'a>(str1: &'a str, str2: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]    --> src/main.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn first_word(str: &str) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]    --> src/main.rs:160:8
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct ImportantExcerpt<'a, T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `announce_and_return_part` and `announce_and_return_t` are never used
[INFO] [stdout]    --> src/main.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<'a, T> ImportantExcerpt<'a, T> {
[INFO] [stdout]     | ----------------------------------- methods in this implementation
[INFO] [stdout] 165 |     //第三条生命周期省略规则计算得出生命周期，所以以下方法不需要显示标注生命周期
[INFO] [stdout] 166 |     fn announce_and_return_part(&self, t: &T) -> &T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn announce_and_return_t<'b, 'c>(&'b self, t: &'c T) -> &'c T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "deabab8cbf99cba8516bbbe4036c23aa1843f88c739d21b3b8a41b86a4de9f0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "deabab8cbf99cba8516bbbe4036c23aa1843f88c739d21b3b8a41b86a4de9f0f", kill_on_drop: false }`
[INFO] [stdout] deabab8cbf99cba8516bbbe4036c23aa1843f88c739d21b3b8a41b86a4de9f0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+c7f6aa2869acdbf014d094c6e427e554e160b6db" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df7172860dac5784c6f506dbc98299076310ebbefee4cd09ec738862e72b2201
[INFO] running `Command { std: "docker" "start" "-a" "df7172860dac5784c6f506dbc98299076310ebbefee4cd09ec738862e72b2201", kill_on_drop: false }`
[INFO] [stderr]    Compiling unit10 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:166:40
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn announce_and_return_part(&self, t: &T) -> &T {
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Point` is never constructed
[INFO] [stdout]   --> src/main.rs:34:8
[INFO] [stdout]    |
[INFO] [stdout] 34 | struct Point<X, Y> {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `get_x`, `get_y`, `new`, and `change` are never used
[INFO] [stdout]   --> src/main.rs:48:8
[INFO] [stdout]    |
[INFO] [stdout] 47 | impl<X, Y> Point<X, Y> {
[INFO] [stdout]    | ---------------------- associated items in this implementation
[INFO] [stdout] 48 |     fn get_x(&self) -> &X {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     fn get_y(&self) -> &Y {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     fn new(x: X, y: Y) -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 66 |     fn change<W, Z>(self, other: Point<W, Z>) -> Point<X, Z> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `print` is never used
[INFO] [stdout]   --> src/main.rs:77:8
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl Point<usize, char> {
[INFO] [stdout]    | ----------------------- method in this implementation
[INFO] [stdout] 77 |     fn print(&self) {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `life_time` is never used
[INFO] [stdout]    --> src/main.rs:132:4
[INFO] [stdout]     |
[INFO] [stdout] 132 | fn life_time<'a>(str1: &'a str, str2: &'a str) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `first_word` is never used
[INFO] [stdout]    --> src/main.rs:147:4
[INFO] [stdout]     |
[INFO] [stdout] 147 | fn first_word(str: &str) -> &str {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ImportantExcerpt` is never constructed
[INFO] [stdout]    --> src/main.rs:160:8
[INFO] [stdout]     |
[INFO] [stdout] 160 | struct ImportantExcerpt<'a, T> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `announce_and_return_part` and `announce_and_return_t` are never used
[INFO] [stdout]    --> src/main.rs:166:8
[INFO] [stdout]     |
[INFO] [stdout] 164 | impl<'a, T> ImportantExcerpt<'a, T> {
[INFO] [stdout]     | ----------------------------------- methods in this implementation
[INFO] [stdout] 165 |     //第三条生命周期省略规则计算得出生命周期，所以以下方法不需要显示标注生命周期
[INFO] [stdout] 166 |     fn announce_and_return_part(&self, t: &T) -> &T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 171 |     fn announce_and_return_t<'b, 'c>(&'b self, t: &'c T) -> &'c T {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "df7172860dac5784c6f506dbc98299076310ebbefee4cd09ec738862e72b2201", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df7172860dac5784c6f506dbc98299076310ebbefee4cd09ec738862e72b2201", kill_on_drop: false }`
[INFO] [stdout] df7172860dac5784c6f506dbc98299076310ebbefee4cd09ec738862e72b2201