[INFO] cloning repository https://github.com/sunkit02/matrix_calc
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sunkit02/matrix_calc" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunkit02%2Fmatrix_calc", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunkit02%2Fmatrix_calc'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d3ad995028bac220d4807f74840a1a4601fbbdd3
[INFO] testing sunkit02/matrix_calc against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsunkit02%2Fmatrix_calc" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sunkit02/matrix_calc
[INFO] finished tweaking git repo https://github.com/sunkit02/matrix_calc
[INFO] tweaked toml for git repo https://github.com/sunkit02/matrix_calc written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sunkit02/matrix_calc on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sunkit02/matrix_calc 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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d7b227f42dd46fd364073636d694c69ec5f16b375ccdfd4a226ba812e0eb5561
[INFO] running `Command { std: "docker" "start" "-a" "d7b227f42dd46fd364073636d694c69ec5f16b375ccdfd4a226ba812e0eb5561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d7b227f42dd46fd364073636d694c69ec5f16b375ccdfd4a226ba812e0eb5561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7b227f42dd46fd364073636d694c69ec5f16b375ccdfd4a226ba812e0eb5561", kill_on_drop: false }`
[INFO] [stdout] d7b227f42dd46fd364073636d694c69ec5f16b375ccdfd4a226ba812e0eb5561
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c8ec61b6345368452804efd40784696edea2e2df65d24465beb0b65147ac03b7
[INFO] running `Command { std: "docker" "start" "-a" "c8ec61b6345368452804efd40784696edea2e2df65d24465beb0b65147ac03b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.17
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.4.4
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-complex v0.4.4
[INFO] [stderr]    Compiling num v0.4.1
[INFO] [stderr]    Compiling fraction v0.15.0
[INFO] [stderr]    Compiling matrix_calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `from_iter` is never used
[INFO] [stdout]   --> src/matrix.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn from_iter<I, Inner>(iter: I) -> Result<Self, String>
[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 6.43s
[INFO] running `Command { std: "docker" "inspect" "c8ec61b6345368452804efd40784696edea2e2df65d24465beb0b65147ac03b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c8ec61b6345368452804efd40784696edea2e2df65d24465beb0b65147ac03b7", kill_on_drop: false }`
[INFO] [stdout] c8ec61b6345368452804efd40784696edea2e2df65d24465beb0b65147ac03b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8dab561f2f5b8a568eea801761873afa42f162d34619c52df7a25eff0fcaf7dc
[INFO] running `Command { std: "docker" "start" "-a" "8dab561f2f5b8a568eea801761873afa42f162d34619c52df7a25eff0fcaf7dc", kill_on_drop: false }`
[INFO] [stderr]    Compiling matrix_calc v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function `from_iter` is never used
[INFO] [stdout]   --> src/matrix.rs:62:12
[INFO] [stdout]    |
[INFO] [stdout] 54 | impl Matrix {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 62 |     pub fn from_iter<I, Inner>(iter: I) -> Result<Self, String>
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "8dab561f2f5b8a568eea801761873afa42f162d34619c52df7a25eff0fcaf7dc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dab561f2f5b8a568eea801761873afa42f162d34619c52df7a25eff0fcaf7dc", kill_on_drop: false }`
[INFO] [stdout] 8dab561f2f5b8a568eea801761873afa42f162d34619c52df7a25eff0fcaf7dc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] fc86cbd356f9eddfa5b3cdd35e3071225da692b7b37d3af09cde2625d15e4ede
[INFO] running `Command { std: "docker" "start" "-a" "fc86cbd356f9eddfa5b3cdd35e3071225da692b7b37d3af09cde2625d15e4ede", kill_on_drop: false }`
[INFO] [stderr] warning: associated function `from_iter` is never used
[INFO] [stdout] 
[INFO] [stderr]   --> src/matrix.rs:62:12
[INFO] [stdout] running 0 tests
[INFO] [stderr]    |
[INFO] [stdout] 
[INFO] [stderr] 54 | impl Matrix {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 62 |     pub fn from_iter<I, Inner>(iter: I) -> Result<Self, String>
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `matrix_calc` (bin "matrix_calc" test) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/matrix_calc-713e06330d787962)
[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" "fc86cbd356f9eddfa5b3cdd35e3071225da692b7b37d3af09cde2625d15e4ede", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fc86cbd356f9eddfa5b3cdd35e3071225da692b7b37d3af09cde2625d15e4ede", kill_on_drop: false }`
[INFO] [stdout] fc86cbd356f9eddfa5b3cdd35e3071225da692b7b37d3af09cde2625d15e4ede