[INFO] cloning repository https://github.com/jochasinga/rusty-gun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jochasinga/rusty-gun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjochasinga%2Frusty-gun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjochasinga%2Frusty-gun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f96aee68f0a6de6374cd8287d55c418576509a9
[INFO] checking jochasinga/rusty-gun against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjochasinga%2Frusty-gun" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jochasinga/rusty-gun on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jochasinga/rusty-gun
[INFO] finished tweaking git repo https://github.com/jochasinga/rusty-gun
[INFO] tweaked toml for git repo https://github.com/jochasinga/rusty-gun written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/jochasinga/rusty-gun already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9d212aa6c55969ca8fb68295f33071eb8cf959de231f4835c44588f71627c96
[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" "d9d212aa6c55969ca8fb68295f33071eb8cf959de231f4835c44588f71627c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9d212aa6c55969ca8fb68295f33071eb8cf959de231f4835c44588f71627c96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d212aa6c55969ca8fb68295f33071eb8cf959de231f4835c44588f71627c96", kill_on_drop: false }`
[INFO] [stdout] d9d212aa6c55969ca8fb68295f33071eb8cf959de231f4835c44588f71627c96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 547011b422d1d9d1cc1932d847d59ce1e1e3bae5b9ac9a2c7688a0f9ec83e8c5
[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" "547011b422d1d9d1cc1932d847d59ce1e1e3bae5b9ac9a2c7688a0f9ec83e8c5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking gun-graph v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/dup.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::ops::Deref`
[INFO] [stdout]  --> src/dup.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::ops::Deref;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/dup.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn check<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/dup.rs:46:47
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn check<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                                               ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/dup.rs:50:22
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn track<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/dup.rs:50:47
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn track<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                                               ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]  --> src/dam.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]  --> src/dam.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/dam.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]   --> src/dam.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/dam.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |            ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]   --> src/dam.rs:14:30
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]  --> src/gun.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |            ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]  --> src/gun.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/dup.rs:46:22
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn check<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/dup.rs:46:47
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn check<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                                               ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/dup.rs:50:22
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn track<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                      ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]   --> src/dup.rs:50:47
[INFO] [stdout]    |
[INFO] [stdout] 50 |     pub fn track<'a>(obj: &'a mut Object<'a>, id: &'a str) {
[INFO] [stdout]    |                                               ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]  --> src/dam.rs:5:13
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |             ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]  --> src/dam.rs:5:24
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |                        ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/dam.rs:10:17
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Dam`
[INFO] [stdout]  --> src/dam.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Dam;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]   --> src/dam.rs:10:35
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hear`
[INFO] [stdout]  --> src/dam.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hear_one`
[INFO] [stdout]   --> src/dam.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> src/dam.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |            ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `say`
[INFO] [stdout]   --> src/dam.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Gun`
[INFO] [stdout]  --> src/gun.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Gun;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]  --> src/gun.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]   --> src/dam.rs:14:30
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]  --> src/gun.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |            ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `peer`
[INFO] [stdout]  --> src/gun.rs:6:30
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |                              ^^^^ help: if this is intentional, prefix it with an underscore: `_peer`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Dam`
[INFO] [stdout]  --> src/dam.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Dam;
[INFO] [stdout]   |        ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hear`
[INFO] [stdout]  --> src/dam.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 |     fn hear(msg: &str, peer: &mut Object) {
[INFO] [stdout]   |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `hear_one`
[INFO] [stdout]   --> src/dam.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn hear_one(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `say`
[INFO] [stdout]   --> src/dam.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn say(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Gun`
[INFO] [stdout]  --> src/gun.rs:3:8
[INFO] [stdout]   |
[INFO] [stdout] 3 | struct Gun;
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get`
[INFO] [stdout]  --> src/gun.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 |     fn get(msg: &mut Object, peer: &mut Object) {
[INFO] [stdout]   |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 19 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.65s
[INFO] running `Command { std: "docker" "inspect" "547011b422d1d9d1cc1932d847d59ce1e1e3bae5b9ac9a2c7688a0f9ec83e8c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "547011b422d1d9d1cc1932d847d59ce1e1e3bae5b9ac9a2c7688a0f9ec83e8c5", kill_on_drop: false }`
[INFO] [stdout] 547011b422d1d9d1cc1932d847d59ce1e1e3bae5b9ac9a2c7688a0f9ec83e8c5