[INFO] cloning repository https://github.com/sander777/big_numbers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sander777/big_numbers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsander777%2Fbig_numbers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsander777%2Fbig_numbers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8ec813b9fbf7f1dfbbeeefa36209a515c7e79fb6
[INFO] checking sander777/big_numbers against try#f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2 for pr-156992
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsander777%2Fbig_numbers" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sander777/big_numbers
[INFO] finished tweaking git repo https://github.com/sander777/big_numbers
[INFO] tweaked toml for git repo https://github.com/sander777/big_numbers written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sander777/big_numbers on toolchain f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sander777/big_numbers 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" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e3fa4876f59309cb99fcb94ff92c2d621ba1bf73d4e7b7d18acb7ea4d3fe0f86
[INFO] running `Command { std: "docker" "start" "-a" "e3fa4876f59309cb99fcb94ff92c2d621ba1bf73d4e7b7d18acb7ea4d3fe0f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e3fa4876f59309cb99fcb94ff92c2d621ba1bf73d4e7b7d18acb7ea4d3fe0f86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e3fa4876f59309cb99fcb94ff92c2d621ba1bf73d4e7b7d18acb7ea4d3fe0f86", kill_on_drop: false }`
[INFO] [stdout] e3fa4876f59309cb99fcb94ff92c2d621ba1bf73d4e7b7d18acb7ea4d3fe0f86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f16624c7fb52ccf15cd304a9728caf1ef4b9c0d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 559e00c3b495bf05973d57400ef7af8780ca7279f2a6efc97006b81bda59962d
[INFO] running `Command { std: "docker" "start" "-a" "559e00c3b495bf05973d57400ef7af8780ca7279f2a6efc97006b81bda59962d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.2.1
[INFO] [stderr]     Checking rand_core v0.6.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.1
[INFO] [stderr]     Checking my_big_numbers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `num_list` is never read
[INFO] [stdout]    --> src/big_number.rs:212:28
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let mut num_list = LinkedList::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 226 |             num_list = list;
[INFO] [stdout]     |             -------- `num_list` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/big_number.rs:213:24
[INFO] [stdout]     |
[INFO] [stdout] 213 |         let mut sign = 1;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 222 |             sign = big.sign;
[INFO] [stdout]     |             --------------- `sign` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num_list` is never read
[INFO] [stdout]    --> src/big_number.rs:212:28
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let mut num_list = LinkedList::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 226 |             num_list = list;
[INFO] [stdout]     |             -------- `num_list` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/big_number.rs:213:24
[INFO] [stdout]     |
[INFO] [stdout] 213 |         let mut sign = 1;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 222 |             sign = big.sign;
[INFO] [stdout]     |             --------------- `sign` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num_list` is never read
[INFO] [stdout]    --> src/big_number.rs:212:28
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let mut num_list = LinkedList::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 226 |             num_list = list;
[INFO] [stdout]     |             -------- `num_list` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/big_number.rs:213:24
[INFO] [stdout]     |
[INFO] [stdout] 213 |         let mut sign = 1;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 222 |             sign = big.sign;
[INFO] [stdout]     |             --------------- `sign` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `num_list` is never read
[INFO] [stdout]    --> src/big_number.rs:212:28
[INFO] [stdout]     |
[INFO] [stdout] 212 |         let mut num_list = LinkedList::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 226 |             num_list = list;
[INFO] [stdout]     |             -------- `num_list` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `sign` is never read
[INFO] [stdout]    --> src/big_number.rs:213:24
[INFO] [stdout]     |
[INFO] [stdout] 213 |         let mut sign = 1;
[INFO] [stdout]     |                        ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 222 |             sign = big.sign;
[INFO] [stdout]     |             --------------- `sign` is overwritten here before the previous value is read
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `test` is never used
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn test() {
[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 `test` is never used
[INFO] [stdout]   --> src/main.rs:32:4
[INFO] [stdout]    |
[INFO] [stdout] 32 | fn test() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.40s
[INFO] running `Command { std: "docker" "inspect" "559e00c3b495bf05973d57400ef7af8780ca7279f2a6efc97006b81bda59962d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "559e00c3b495bf05973d57400ef7af8780ca7279f2a6efc97006b81bda59962d", kill_on_drop: false }`
[INFO] [stdout] 559e00c3b495bf05973d57400ef7af8780ca7279f2a6efc97006b81bda59962d
