[INFO] cloning repository https://github.com/jtremback/model_brute
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jtremback/model_brute" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtremback%2Fmodel_brute", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtremback%2Fmodel_brute'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f317f1762d7729fc532c21e8938b62561e556ddf
[INFO] checking jtremback/model_brute against try#22cc29ba5b459fb386c0406b9baf3a49eb0fba39 for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtremback%2Fmodel_brute" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jtremback/model_brute
[INFO] finished tweaking git repo https://github.com/jtremback/model_brute
[INFO] tweaked toml for git repo https://github.com/jtremback/model_brute written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jtremback/model_brute on toolchain 22cc29ba5b459fb386c0406b9baf3a49eb0fba39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jtremback/model_brute 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" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "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
[ERROR] error running command: no output for 300 seconds
[INFO] checking jtremback/model_brute against try#22cc29ba5b459fb386c0406b9baf3a49eb0fba39 for pr-146095
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjtremback%2Fmodel_brute" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/jtremback/model_brute
[INFO] finished tweaking git repo https://github.com/jtremback/model_brute
[INFO] tweaked toml for git repo https://github.com/jtremback/model_brute written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/jtremback/model_brute on toolchain 22cc29ba5b459fb386c0406b9baf3a49eb0fba39
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/jtremback/model_brute 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" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2a8066fb90f9e5c1f81ae0fcc89b11be3a2b72f1be19dce43b968c62ec7077c
[INFO] running `Command { std: "docker" "start" "-a" "e2a8066fb90f9e5c1f81ae0fcc89b11be3a2b72f1be19dce43b968c62ec7077c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2a8066fb90f9e5c1f81ae0fcc89b11be3a2b72f1be19dce43b968c62ec7077c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2a8066fb90f9e5c1f81ae0fcc89b11be3a2b72f1be19dce43b968c62ec7077c", kill_on_drop: false }`
[INFO] [stdout] e2a8066fb90f9e5c1f81ae0fcc89b11be3a2b72f1be19dce43b968c62ec7077c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+22cc29ba5b459fb386c0406b9baf3a49eb0fba39" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7da3ab13b0324d462d461e9baf0b5bed5a60e173de4754f906cddd212c92ab0
[INFO] running `Command { std: "docker" "start" "-a" "e7da3ab13b0324d462d461e9baf0b5bed5a60e173de4754f906cddd212c92ab0", kill_on_drop: false }`
[INFO] [stderr]     Checking model_brute v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:19
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                   ----^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:19
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                   ----^^^^^
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                              ----^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |          ----^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                              ----^^^^
[INFO] [stdout]    |                              |
[INFO] [stdout]    |                              help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:62:10
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |          ----^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:10
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |          ----^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:10
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |          ----^^^^^
[INFO] [stdout]    |          |
[INFO] [stdout]    |          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:67:21
[INFO] [stdout]    |
[INFO] [stdout] 67 |         |mut state, mut next| {
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:62:21
[INFO] [stdout]    |
[INFO] [stdout] 62 |         |mut state, mut next| {
[INFO] [stdout]    |                     ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `next`
[INFO] [stdout]   --> src/main.rs:53:30
[INFO] [stdout]    |
[INFO] [stdout] 53 |     .branch(vec![|mut state, mut next| {
[INFO] [stdout]    |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_next`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `i` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut i = 0;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_i` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `i` is assigned to, but never used
[INFO] [stdout]   --> src/main.rs:86:9
[INFO] [stdout]    |
[INFO] [stdout] 86 |     let mut i = 0;
[INFO] [stdout]    |         ^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: consider using `_i` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]   --> src/main.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         i += 1;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `i` is never read
[INFO] [stdout]   --> src/main.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         i += 1;
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "e7da3ab13b0324d462d461e9baf0b5bed5a60e173de4754f906cddd212c92ab0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7da3ab13b0324d462d461e9baf0b5bed5a60e173de4754f906cddd212c92ab0", kill_on_drop: false }`
[INFO] [stdout] e7da3ab13b0324d462d461e9baf0b5bed5a60e173de4754f906cddd212c92ab0
