[INFO] cloning repository https://github.com/mayanpathak/Borrowing
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mayanpathak/Borrowing" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmayanpathak%2FBorrowing", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmayanpathak%2FBorrowing'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4c9e2770b9bc982ec3738c2be1e807076f66c065
[INFO] checking mayanpathak/Borrowing against try#3fada14ee01d755dc8076e611f11bf65b28ffd21 for pr-154971
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmayanpathak%2FBorrowing" "/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/mayanpathak/Borrowing
[INFO] finished tweaking git repo https://github.com/mayanpathak/Borrowing
[INFO] tweaked toml for git repo https://github.com/mayanpathak/Borrowing written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mayanpathak/Borrowing on toolchain 3fada14ee01d755dc8076e611f11bf65b28ffd21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mayanpathak/Borrowing 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" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "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-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aadd09b264d9212befa130a589e15614f8b57baa4dfa9ca8e34c327a6c5fa8eb
[INFO] running `Command { std: "docker" "start" "-a" "aadd09b264d9212befa130a589e15614f8b57baa4dfa9ca8e34c327a6c5fa8eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aadd09b264d9212befa130a589e15614f8b57baa4dfa9ca8e34c327a6c5fa8eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aadd09b264d9212befa130a589e15614f8b57baa4dfa9ca8e34c327a6c5fa8eb", kill_on_drop: false }`
[INFO] [stdout] aadd09b264d9212befa130a589e15614f8b57baa4dfa9ca8e34c327a6c5fa8eb
[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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+3fada14ee01d755dc8076e611f11bf65b28ffd21" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fe7c46a53a52d8cccc189be850a7e9931d0a0b77bca597fdc40421862cb1d67c
[INFO] running `Command { std: "docker" "start" "-a" "fe7c46a53a52d8cccc189be850a7e9931d0a0b77bca597fdc40421862cb1d67c", kill_on_drop: false }`
[INFO] [stderr]     Checking rustasses v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `class_name` is never read
[INFO] [stdout]    --> src/main.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 187 | struct ClassRoom {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 188 |     class_name: 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 `borrow_checker_trap` is never used
[INFO] [stdout]    --> src/main.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn borrow_checker_trap() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_checker_fixed` is never used
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn borrow_checker_fixed() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_avg` is never used
[INFO] [stdout]    --> src/main.rs:242:4
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn higher_avg<'a>(s1: &'a Student, s2: &'a Student) -> &'a Student {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_avg_name` is never used
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn higher_avg_name<'a>(s1: &'a Student, s2: &'a Student) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_name_age` is never used
[INFO] [stdout]    --> src/main.rs:252:4
[INFO] [stdout]     |
[INFO] [stdout] 252 | fn print_name_age(student: &Student) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_vs_move` is never used
[INFO] [stdout]    --> src/main.rs:257:4
[INFO] [stdout]     |
[INFO] [stdout] 257 | fn copy_vs_move(student: &Student) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `class_name` is never read
[INFO] [stdout]    --> src/main.rs:188:5
[INFO] [stdout]     |
[INFO] [stdout] 187 | struct ClassRoom {
[INFO] [stdout]     |        --------- field in this struct
[INFO] [stdout] 188 |     class_name: 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 `borrow_checker_trap` is never used
[INFO] [stdout]    --> src/main.rs:212:4
[INFO] [stdout]     |
[INFO] [stdout] 212 | fn borrow_checker_trap() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `borrow_checker_fixed` is never used
[INFO] [stdout]    --> src/main.rs:222:4
[INFO] [stdout]     |
[INFO] [stdout] 222 | fn borrow_checker_fixed() {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_avg` is never used
[INFO] [stdout]    --> src/main.rs:242:4
[INFO] [stdout]     |
[INFO] [stdout] 242 | fn higher_avg<'a>(s1: &'a Student, s2: &'a Student) -> &'a Student {
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `higher_avg_name` is never used
[INFO] [stdout]    --> src/main.rs:248:4
[INFO] [stdout]     |
[INFO] [stdout] 248 | fn higher_avg_name<'a>(s1: &'a Student, s2: &'a Student) -> &'a str {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `print_name_age` is never used
[INFO] [stdout]    --> src/main.rs:252:4
[INFO] [stdout]     |
[INFO] [stdout] 252 | fn print_name_age(student: &Student) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `copy_vs_move` is never used
[INFO] [stdout]    --> src/main.rs:257:4
[INFO] [stdout]     |
[INFO] [stdout] 257 | fn copy_vs_move(student: &Student) {
[INFO] [stdout]     |    ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "fe7c46a53a52d8cccc189be850a7e9931d0a0b77bca597fdc40421862cb1d67c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe7c46a53a52d8cccc189be850a7e9931d0a0b77bca597fdc40421862cb1d67c", kill_on_drop: false }`
[INFO] [stdout] fe7c46a53a52d8cccc189be850a7e9931d0a0b77bca597fdc40421862cb1d67c