[INFO] cloning repository https://github.com/Nilstrieb/coldsquare
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nilstrieb/coldsquare" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Fcoldsquare", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Fcoldsquare'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e9a77168438cd0a48b65d7358a47affd77973adb
[INFO] checking Nilstrieb/coldsquare against try#6f8a6450478f69b8510c8976ab6c2a70b3b0e47c for pr-84920
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNilstrieb%2Fcoldsquare" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Nilstrieb/coldsquare on toolchain 6f8a6450478f69b8510c8976ab6c2a70b3b0e47c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Nilstrieb/coldsquare
[INFO] finished tweaking git repo https://github.com/Nilstrieb/coldsquare
[INFO] tweaked toml for git repo https://github.com/Nilstrieb/coldsquare written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/Nilstrieb/coldsquare already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "fetch" "--locked" "--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-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 04ba73060180ab467109568762b9d951aa7664cd41e3daf39cc3164d557bbe2c
[INFO] running `Command { std: "docker" "start" "-a" "04ba73060180ab467109568762b9d951aa7664cd41e3daf39cc3164d557bbe2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04ba73060180ab467109568762b9d951aa7664cd41e3daf39cc3164d557bbe2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04ba73060180ab467109568762b9d951aa7664cd41e3daf39cc3164d557bbe2c", kill_on_drop: false }`
[INFO] [stdout] 04ba73060180ab467109568762b9d951aa7664cd41e3daf39cc3164d557bbe2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+6f8a6450478f69b8510c8976ab6c2a70b3b0e47c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 577ba3cf200d31a3934a718d897f0a59405f854241bba2d12e69dade867e90f9
[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" "577ba3cf200d31a3934a718d897f0a59405f854241bba2d12e69dade867e90f9", kill_on_drop: false }`
[INFO] [stderr]     Checking coldsquare v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct is never constructed: `OperandStack`
[INFO] [stdout]  --> src/model.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct OperandStack {
[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: `new`
[INFO] [stdout]  --> src/model.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new() -> OperandStack {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/model.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn pop(&mut self) -> i32 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/model.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn push(&mut self, n: i32) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `swap`
[INFO] [stdout]   --> src/model.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn swap(&mut self) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LocalVariables`
[INFO] [stdout]   --> src/model.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LocalVariables {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/model.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn new(size: usize) -> LocalVariables {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store`
[INFO] [stdout]   --> src/model.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 |     pub fn store(&mut self, address: u16, value: i32) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `store2`
[INFO] [stdout]   --> src/model.rs:41:12
[INFO] [stdout]    |
[INFO] [stdout] 41 |     pub fn store2(&mut self, address: u16, value1: i32, value2: i32) {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load`
[INFO] [stdout]   --> src/model.rs:46:12
[INFO] [stdout]    |
[INFO] [stdout] 46 |     pub fn load(&self, address: u16) -> i32 {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load2`
[INFO] [stdout]   --> src/model.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn load2(&self, address: u16) -> (i32, i32) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `load2`
[INFO] [stdout]   --> src/model.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn load2(&self, address: u16) -> (i32, i32) {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "577ba3cf200d31a3934a718d897f0a59405f854241bba2d12e69dade867e90f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "577ba3cf200d31a3934a718d897f0a59405f854241bba2d12e69dade867e90f9", kill_on_drop: false }`
[INFO] [stdout] 577ba3cf200d31a3934a718d897f0a59405f854241bba2d12e69dade867e90f9