[INFO] cloning repository https://github.com/shubhamdixit863/rustsessions [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/shubhamdixit863/rustsessions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshubhamdixit863%2Frustsessions", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshubhamdixit863%2Frustsessions'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 20fa2232e6098795755d8f6cded0400107e38191 [INFO] checking shubhamdixit863/rustsessions against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshubhamdixit863%2Frustsessions" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/shubhamdixit863/rustsessions [INFO] finished tweaking git repo https://github.com/shubhamdixit863/rustsessions [INFO] tweaked toml for git repo https://github.com/shubhamdixit863/rustsessions written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/shubhamdixit863/rustsessions on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/shubhamdixit863/rustsessions 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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 shubhamdixit863/rustsessions against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fshubhamdixit863%2Frustsessions" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/shubhamdixit863/rustsessions [INFO] finished tweaking git repo https://github.com/shubhamdixit863/rustsessions [INFO] tweaked toml for git repo https://github.com/shubhamdixit863/rustsessions written to /workspace/builds/worker-3-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/shubhamdixit863/rustsessions on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/shubhamdixit863/rustsessions 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 08569c05db9339794fef2b777baccc17a392d86ded21394a74182070557b4bad [INFO] running `Command { std: "docker" "start" "-a" "08569c05db9339794fef2b777baccc17a392d86ded21394a74182070557b4bad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "08569c05db9339794fef2b777baccc17a392d86ded21394a74182070557b4bad", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "08569c05db9339794fef2b777baccc17a392d86ded21394a74182070557b4bad", kill_on_drop: false }` [INFO] [stdout] 08569c05db9339794fef2b777baccc17a392d86ded21394a74182070557b4bad [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6739e0d492f28bee028402d650ca069f7e19cfd6e95d79e6db49cfe4598addfc [INFO] running `Command { std: "docker" "start" "-a" "6739e0d492f28bee028402d650ca069f7e19cfd6e95d79e6db49cfe4598addfc", kill_on_drop: false }` [INFO] [stderr] Checking rustsessions v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `Debug`, `Display`, and `Formatter` [INFO] [stdout] --> src/main.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{Debug, Display, Formatter}; [INFO] [stdout] | ^^^^^ ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused imports: `Debug`, `Display`, and `Formatter` [INFO] [stdout] --> src/main.rs:1:16 [INFO] [stdout] | [INFO] [stdout] 1 | use std::fmt::{Debug, Display, Formatter}; [INFO] [stdout] | ^^^^^ ^^^^^^^ ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::thread` [INFO] [stdout] --> src/main.rs:2:5 [INFO] [stdout] | [INFO] [stdout] 2 | use std::thread; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:116:10 [INFO] [stdout] | [INFO] [stdout] 116 | let mut v =vec![1,2,2,3,4]; [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:145:10 [INFO] [stdout] | [INFO] [stdout] 145 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:116:10 [INFO] [stdout] | [INFO] [stdout] 116 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mv2` [INFO] [stdout] --> src/main.rs:132:9 [INFO] [stdout] | [INFO] [stdout] 132 | let mv2=& mut v; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mv2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:145:10 [INFO] [stdout] | [INFO] [stdout] 145 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 152 | let a="hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:153:9 [INFO] [stdout] | [INFO] [stdout] 153 | let b="hello2"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/main.rs:116:10 [INFO] [stdout] | [INFO] [stdout] 116 | let mut v =vec![1,2,2,3,4]; [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:145:10 [INFO] [stdout] | [INFO] [stdout] 145 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ----^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:116:10 [INFO] [stdout] | [INFO] [stdout] 116 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `mv2` [INFO] [stdout] --> src/main.rs:132:9 [INFO] [stdout] | [INFO] [stdout] 132 | let mv2=& mut v; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_mv2` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `v` [INFO] [stdout] --> src/main.rs:145:10 [INFO] [stdout] | [INFO] [stdout] 145 | let mut v =vec![1,2,2,3,4]; [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_v` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `a` [INFO] [stdout] --> src/main.rs:152:9 [INFO] [stdout] | [INFO] [stdout] 152 | let a="hello"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_a` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `b` [INFO] [stdout] --> src/main.rs:153:9 [INFO] [stdout] | [INFO] [stdout] 153 | let b="hello2"; [INFO] [stdout] | ^ help: if this is intentional, prefix it with an underscore: `_b` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> src/main.rs:170:4 [INFO] [stdout] | [INFO] [stdout] 170 | fn foo()->String{ [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_vec` is never used [INFO] [stdout] --> src/main.rs:178:4 [INFO] [stdout] | [INFO] [stdout] 178 | fn modify_vec(v:& mut Vec){ [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_str` is never used [INFO] [stdout] --> src/main.rs:182:4 [INFO] [stdout] | [INFO] [stdout] 182 | fn modify_str(v:&String){ // here we are passing the borrowed value [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `foo` is never used [INFO] [stdout] --> src/main.rs:170:4 [INFO] [stdout] | [INFO] [stdout] 170 | fn foo()->String{ [INFO] [stdout] | ^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_vec` is never used [INFO] [stdout] --> src/main.rs:178:4 [INFO] [stdout] | [INFO] [stdout] 178 | fn modify_vec(v:& mut Vec){ [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: function `modify_str` is never used [INFO] [stdout] --> src/main.rs:182:4 [INFO] [stdout] | [INFO] [stdout] 182 | fn modify_str(v:&String){ // here we are passing the borrowed value [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s [INFO] running `Command { std: "docker" "inspect" "6739e0d492f28bee028402d650ca069f7e19cfd6e95d79e6db49cfe4598addfc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6739e0d492f28bee028402d650ca069f7e19cfd6e95d79e6db49cfe4598addfc", kill_on_drop: false }` [INFO] [stdout] 6739e0d492f28bee028402d650ca069f7e19cfd6e95d79e6db49cfe4598addfc