[INFO] cloning repository https://github.com/yesean/rust-by-example
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yesean/rust-by-example" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyesean%2Frust-by-example", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyesean%2Frust-by-example'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8fd24a0ba6b8536a794ca2f2e1235dfad06e9f58
[INFO] testing yesean/rust-by-example against master#1ddedbaa5919b7b3e70d984660e21e844c615c97 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyesean%2Frust-by-example" "/workspace/builds/worker-0-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yesean/rust-by-example on toolchain 1ddedbaa5919b7b3e70d984660e21e844c615c97
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yesean/rust-by-example
[INFO] finished tweaking git repo https://github.com/yesean/rust-by-example
[INFO] tweaked toml for git repo https://github.com/yesean/rust-by-example written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/yesean/rust-by-example 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" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/workspace/builds/worker-0-tc1/source/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 41d84fdbd35bdce7bd9a713c5501ddcfe9ea26a30d79499afb4773e1c7b14102
[INFO] running `Command { std: "docker" "start" "-a" "41d84fdbd35bdce7bd9a713c5501ddcfe9ea26a30d79499afb4773e1c7b14102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "41d84fdbd35bdce7bd9a713c5501ddcfe9ea26a30d79499afb4773e1c7b14102", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41d84fdbd35bdce7bd9a713c5501ddcfe9ea26a30d79499afb4773e1c7b14102", kill_on_drop: false }`
[INFO] [stdout] 41d84fdbd35bdce7bd9a713c5501ddcfe9ea26a30d79499afb4773e1c7b14102
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c87b8cfd71fd50b8f8600d057a25637837455003ab87e256652c8e9d316ced5b
[INFO] running `Command { std: "docker" "start" "-a" "c87b8cfd71fd50b8f8600d057a25637837455003ab87e256652c8e9d316ced5b", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/main.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn transpose(mat: Matrix) -> Matrix {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "c87b8cfd71fd50b8f8600d057a25637837455003ab87e256652c8e9d316ced5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c87b8cfd71fd50b8f8600d057a25637837455003ab87e256652c8e9d316ced5b", kill_on_drop: false }`
[INFO] [stdout] c87b8cfd71fd50b8f8600d057a25637837455003ab87e256652c8e9d316ced5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c2444556ddbdf337d5fbcd66796ea1008f1c4b281bdfd78c63b2c16c10ae0284
[INFO] running `Command { std: "docker" "start" "-a" "c2444556ddbdf337d5fbcd66796ea1008f1c4b281bdfd78c63b2c16c10ae0284", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/main.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn transpose(mat: Matrix) -> Matrix {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "c2444556ddbdf337d5fbcd66796ea1008f1c4b281bdfd78c63b2c16c10ae0284", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c2444556ddbdf337d5fbcd66796ea1008f1c4b281bdfd78c63b2c16c10ae0284", kill_on_drop: false }`
[INFO] [stdout] c2444556ddbdf337d5fbcd66796ea1008f1c4b281bdfd78c63b2c16c10ae0284
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1ddedbaa5919b7b3e70d984660e21e844c615c97" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 771a6f5546db0805a9ad92aad085ffc0c1394698bca596203636ccebd8f64f04
[INFO] running `Command { std: "docker" "start" "-a" "771a6f5546db0805a9ad92aad085ffc0c1394698bca596203636ccebd8f64f04", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[INFO] [stderr] warning: function `reverse` is never used
[INFO] [stderr]  --> src/main.rs:2:4
[INFO] [stderr]   |
[INFO] [stderr] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stderr]   |    ^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Matrix` is never constructed
[INFO] [stderr]   --> src/main.rs:11:8
[INFO] [stderr]    |
[INFO] [stderr] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stderr]    |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `transpose` is never used
[INFO] [stderr]   --> src/main.rs:18:4
[INFO] [stderr]    |
[INFO] [stderr] 18 | fn transpose(mat: Matrix) -> Matrix {
[INFO] [stderr]    |    ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `main` is never used
[INFO] [stderr]   --> src/main.rs:22:4
[INFO] [stderr]    |
[INFO] [stderr] 22 | fn main() {
[INFO] [stderr]    |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-by-example` (lib) generated 4 warnings
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rbe-3eef847987881af2)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/rust_by_example-875a4418026d952a)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests rbe
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "771a6f5546db0805a9ad92aad085ffc0c1394698bca596203636ccebd8f64f04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "771a6f5546db0805a9ad92aad085ffc0c1394698bca596203636ccebd8f64f04", kill_on_drop: false }`
[INFO] [stdout] 771a6f5546db0805a9ad92aad085ffc0c1394698bca596203636ccebd8f64f04
[INFO] testing yesean/rust-by-example against try#33f1d8bb92813a1bfc23c093c9f443ab09290307 for pr-128400
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyesean%2Frust-by-example" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yesean/rust-by-example on toolchain 33f1d8bb92813a1bfc23c093c9f443ab09290307
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yesean/rust-by-example
[INFO] finished tweaking git repo https://github.com/yesean/rust-by-example
[INFO] tweaked toml for git repo https://github.com/yesean/rust-by-example written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/yesean/rust-by-example 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" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/workspace/builds/worker-0-tc2/source/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4351b58dceb360f1d58fce43c6878ceadd18e91efb52750adfe94eeacdbd44a8
[INFO] running `Command { std: "docker" "start" "-a" "4351b58dceb360f1d58fce43c6878ceadd18e91efb52750adfe94eeacdbd44a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4351b58dceb360f1d58fce43c6878ceadd18e91efb52750adfe94eeacdbd44a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4351b58dceb360f1d58fce43c6878ceadd18e91efb52750adfe94eeacdbd44a8", kill_on_drop: false }`
[INFO] [stdout] 4351b58dceb360f1d58fce43c6878ceadd18e91efb52750adfe94eeacdbd44a8
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+33f1d8bb92813a1bfc23c093c9f443ab09290307" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 31c55c1325b90cc157c5a1119fabae620eb44a6c89608a9ce1dc19c8253c4434
[INFO] running `Command { std: "docker" "start" "-a" "31c55c1325b90cc157c5a1119fabae620eb44a6c89608a9ce1dc19c8253c4434", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr] warning: file `/opt/rustwide/workdir/src/main.rs` found to be present in multiple build targets:
[INFO] [stderr]   * `lib` target `rbe`
[INFO] [stderr]   * `bin` target `rust-by-example`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `reverse` is never used
[INFO] [stdout]  --> src/main.rs:2:4
[INFO] [stdout]   |
[INFO] [stdout] 2 | fn reverse(pair: (i32, bool)) -> (bool, i32) {
[INFO] [stdout]   |    ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Matrix` is never constructed
[INFO] [stdout]   --> src/main.rs:11:8
[INFO] [stdout]    |
[INFO] [stdout] 11 | struct Matrix(f32, f32, f32, f32);
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `transpose` is never used
[INFO] [stdout]   --> src/main.rs:18:4
[INFO] [stdout]    |
[INFO] [stdout] 18 | fn transpose(mat: Matrix) -> Matrix {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `main` is never used
[INFO] [stdout]   --> src/main.rs:22:4
[INFO] [stdout]    |
[INFO] [stdout] 22 | fn main() {
[INFO] [stdout]    |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit status: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: LC_ALL="C" PATH="/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin:/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/self-contained:/opt/rustwide/cargo-home/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin" VSLANG="1033" "cc" "-m64" "/tmp/rustcIyH2aM/symbols.o" "/opt/rustwide/target/debug/deps/rust_by_example-1fe57934d1c0ea28.rust_by_example.1fcc114cbfc377e5-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rust_by_example-1fe57934d1c0ea28.4fze87eqr23kzk6o9ru3zmmcj.rcgu.o" "-Wl,--as-needed" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-9506e3738f23e7c7.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-0e87bdc388165b9b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-28d2ee21ffecbcd0.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libmemchr-4cd64c3d9fc2560b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a1fedeceba4cc892.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-0b8915cbc76cd410.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-fec2ce82fc5b17fa.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd_detect-fdb02324b55b2840.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-db981ef273c68b12.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-2c4968ed4cb29e9c.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-661cdd70a5b83118.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbb3bfdc8e63ca5.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-a4c5ad4392a26401.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-9409cd7d030362b9.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-7b90a2705bcf265b.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-80d2f129fb536a6f.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-f72b956e24d1de70.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-632ae0f28c5e55ff.rlib" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-7586cb84705120bb.rlib" "-Wl,-Bdynamic" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-B/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/bin/gcc-ld" "-fuse-ld=lld" "-Wl,--eh-frame-hdr" "-Wl,-z,noexecstack" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-L" "/opt/rustwide/rustup-home/toolchains/33f1d8bb92813a1bfc23c093c9f443ab09290307/lib/rustlib/x86_64-unknown-linux-gnu/lib/self-contained" "-o" "/opt/rustwide/target/debug/deps/rust_by_example-1fe57934d1c0ea28" "-Wl,--gc-sections" "-pie" "-Wl,-z,relro,-z,now" "-nodefaultlibs"
[INFO] [stdout]   = note: collect2: fatal error: ld terminated with signal 7 [Bus error], core dumped
[INFO] [stdout]           compilation terminated.
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust-by-example` (bin "rust-by-example") due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "31c55c1325b90cc157c5a1119fabae620eb44a6c89608a9ce1dc19c8253c4434", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "31c55c1325b90cc157c5a1119fabae620eb44a6c89608a9ce1dc19c8253c4434", kill_on_drop: false }`
[INFO] [stdout] 31c55c1325b90cc157c5a1119fabae620eb44a6c89608a9ce1dc19c8253c4434