[INFO] cloning repository https://github.com/4got/rust-101
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/4got/rust-101" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1e0adce41a374b2fb91d96dd71d58734ca87d33d
[INFO] testing 4got/rust-101 against master#62efba8a050c64249dab942951bb28f710208bc8 for pr-90799
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F4got%2Frust-101" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/4got/rust-101 on toolchain 62efba8a050c64249dab942951bb28f710208bc8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/4got/rust-101
[INFO] finished tweaking git repo https://github.com/4got/rust-101
[INFO] tweaked toml for git repo https://github.com/4got/rust-101 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/4got/rust-101 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9ac0ee732818022ef2864914b3b42c5446454a35d9c9bc65a7a01e97d4d3a5d
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "f9ac0ee732818022ef2864914b3b42c5446454a35d9c9bc65a7a01e97d4d3a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9ac0ee732818022ef2864914b3b42c5446454a35d9c9bc65a7a01e97d4d3a5d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9ac0ee732818022ef2864914b3b42c5446454a35d9c9bc65a7a01e97d4d3a5d", kill_on_drop: false }`
[INFO] [stdout] f9ac0ee732818022ef2864914b3b42c5446454a35d9c9bc65a7a01e97d4d3a5d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 51a51912850231d6e2f9578ae42b110cb9a9465bec1215692adfb9775b1f99aa
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "51a51912850231d6e2f9578ae42b110cb9a9465bec1215692adfb9775b1f99aa", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `NumberOrNothing`
[INFO] [stdout]  --> src/part02.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | type NumberOrNothing = SomethingOrNothing<i32>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FloatOrNothing`
[INFO] [stdout]  --> src/part02.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type FloatOrNothing = SomethingOrNothing<f32>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/part02.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/part02.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/part02.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_vec`
[INFO] [stdout]  --> src/part03.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn read_vec() -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.22s
[INFO] running `Command { std: "docker" "inspect" "51a51912850231d6e2f9578ae42b110cb9a9465bec1215692adfb9775b1f99aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51a51912850231d6e2f9578ae42b110cb9a9465bec1215692adfb9775b1f99aa", kill_on_drop: false }`
[INFO] [stdout] 51a51912850231d6e2f9578ae42b110cb9a9465bec1215692adfb9775b1f99aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 75c96b7e6561774400b0de804cf9f9b3c369af9f7f336612eddc64199dd27090
[INFO] running `Command { std: "docker" "start" "-a" "75c96b7e6561774400b0de804cf9f9b3c369af9f7f336612eddc64199dd27090", kill_on_drop: false }`
[INFO] [stderr]    Compiling rust-101 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `NumberOrNothing`
[INFO] [stdout]  --> src/part02.rs:7:1
[INFO] [stdout]   |
[INFO] [stdout] 7 | type NumberOrNothing = SomethingOrNothing<i32>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `FloatOrNothing`
[INFO] [stdout]  --> src/part02.rs:8:1
[INFO] [stdout]   |
[INFO] [stdout] 8 | type FloatOrNothing = SomethingOrNothing<f32>;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/part02.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print`
[INFO] [stdout]   --> src/part02.rs:31:10
[INFO] [stdout]    |
[INFO] [stdout] 31 |   pub fn print(self) {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `main`
[INFO] [stdout]   --> src/part02.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 | pub fn main() {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `read_vec`
[INFO] [stdout]  --> src/part03.rs:4:4
[INFO] [stdout]   |
[INFO] [stdout] 4 | fn read_vec() -> Vec<i32> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.86s
[INFO] running `Command { std: "docker" "inspect" "75c96b7e6561774400b0de804cf9f9b3c369af9f7f336612eddc64199dd27090", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75c96b7e6561774400b0de804cf9f9b3c369af9f7f336612eddc64199dd27090", kill_on_drop: false }`
[INFO] [stdout] 75c96b7e6561774400b0de804cf9f9b3c369af9f7f336612eddc64199dd27090
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+62efba8a050c64249dab942951bb28f710208bc8" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 859096da179d26ad973b51098c37f013a2370adcd95794d872d3b680a4bc6fcb
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "859096da179d26ad973b51098c37f013a2370adcd95794d872d3b680a4bc6fcb", kill_on_drop: false }`
[INFO] [stderr] warning: type alias is never used: `NumberOrNothing`
[INFO] [stderr]  --> src/part02.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | type NumberOrNothing = SomethingOrNothing<i32>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `FloatOrNothing`
[INFO] [stderr]  --> src/part02.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | type FloatOrNothing = SomethingOrNothing<f32>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print`
[INFO] [stderr]   --> src/part02.rs:23:10
[INFO] [stderr]    |
[INFO] [stderr] 23 |   pub fn print(self) {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print`
[INFO] [stderr]   --> src/part02.rs:31:10
[INFO] [stderr]    |
[INFO] [stderr] 31 |   pub fn print(self) {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `main`
[INFO] [stderr]   --> src/part02.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 | pub fn main() {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `read_vec`
[INFO] [stderr]  --> src/part03.rs:4:4
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn read_vec() -> Vec<i32> {
[INFO] [stderr]   |    ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `rust-101` (bin "rust-101" test) generated 6 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/rust_101-53c56f372330a83d)
[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" "859096da179d26ad973b51098c37f013a2370adcd95794d872d3b680a4bc6fcb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "859096da179d26ad973b51098c37f013a2370adcd95794d872d3b680a4bc6fcb", kill_on_drop: false }`
[INFO] [stdout] 859096da179d26ad973b51098c37f013a2370adcd95794d872d3b680a4bc6fcb