[INFO] cloning repository https://github.com/lionel626/mem-test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/lionel626/mem-test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flionel626%2Fmem-test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flionel626%2Fmem-test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5302fbbc64d6255ddc6b96b83080b9ed5f372012
[INFO] checking lionel626/mem-test against try#1bd50d4315eb15970d395b6be5823f9384707693 for pr-140151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Flionel626%2Fmem-test" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/lionel626/mem-test on toolchain 1bd50d4315eb15970d395b6be5823f9384707693
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/lionel626/mem-test
[INFO] finished tweaking git repo https://github.com/lionel626/mem-test
[INFO] tweaked toml for git repo https://github.com/lionel626/mem-test written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/lionel626/mem-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" "+1bd50d4315eb15970d395b6be5823f9384707693" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cf9935398206de0ba6fd4c6369f40fa0280e42d54a81502d8d5633d1dc6a1d9
[INFO] running `Command { std: "docker" "start" "-a" "5cf9935398206de0ba6fd4c6369f40fa0280e42d54a81502d8d5633d1dc6a1d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cf9935398206de0ba6fd4c6369f40fa0280e42d54a81502d8d5633d1dc6a1d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cf9935398206de0ba6fd4c6369f40fa0280e42d54a81502d8d5633d1dc6a1d9", kill_on_drop: false }`
[INFO] [stdout] 5cf9935398206de0ba6fd4c6369f40fa0280e42d54a81502d8d5633d1dc6a1d9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:b0b074c097205a61b89e8ad263052f976b2b332c4dc5f02aef1fe52501660d6e" "/opt/rustwide/cargo-home/bin/cargo" "+1bd50d4315eb15970d395b6be5823f9384707693" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe8f62cb58a0b87c15034afebdfd41d53b77dbe3c3bc70e96168e0fb6759e4e4
[INFO] running `Command { std: "docker" "start" "-a" "fe8f62cb58a0b87c15034afebdfd41d53b77dbe3c3bc70e96168e0fb6759e4e4", kill_on_drop: false }`
[INFO] [stderr]     Checking mem-test v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `realloc`
[INFO] [stdout]  --> src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     alloc::{realloc, Layout},
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `realloc`
[INFO] [stdout]  --> src/main.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     alloc::{realloc, Layout},
[INFO] [stdout]   |             ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Contact {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     age: u32,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/main.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ContactStorage {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn push(&mut self, elem: Contact) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn get(&self, i:usize) -> Option<&Contact>{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `name` and `age` are never read
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | struct Contact {
[INFO] [stdout]   |        ------- fields in this struct
[INFO] [stdout] 7 |     name: String,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 8 |     age: u32,
[INFO] [stdout]   |     ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `push` and `get` are never used
[INFO] [stdout]   --> src/main.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl ContactStorage {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn push(&mut self, elem: Contact) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     pub fn get(&self, i:usize) -> Option<&Contact>{
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "fe8f62cb58a0b87c15034afebdfd41d53b77dbe3c3bc70e96168e0fb6759e4e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe8f62cb58a0b87c15034afebdfd41d53b77dbe3c3bc70e96168e0fb6759e4e4", kill_on_drop: false }`
[INFO] [stdout] fe8f62cb58a0b87c15034afebdfd41d53b77dbe3c3bc70e96168e0fb6759e4e4