[INFO] cloning repository https://github.com/varun24143/rust_dsa_test
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/varun24143/rust_dsa_test" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb5cb726c35c8d35a1854c265cd7f6972778bd99
[INFO] checking varun24143/rust_dsa_test against try#07fecb9cf34c4979a772ba38c99d6d9144768413 for pr-87710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fvarun24143%2Frust_dsa_test" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/varun24143/rust_dsa_test on toolchain 07fecb9cf34c4979a772ba38c99d6d9144768413
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] finished tweaking git repo https://github.com/varun24143/rust_dsa_test
[INFO] tweaked toml for git repo https://github.com/varun24143/rust_dsa_test written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/varun24143/rust_dsa_test already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] aea2e232bfda00db5e6f858f1a60064f70d85fc5192997b132a5691b31eb6d2d
[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" "aea2e232bfda00db5e6f858f1a60064f70d85fc5192997b132a5691b31eb6d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aea2e232bfda00db5e6f858f1a60064f70d85fc5192997b132a5691b31eb6d2d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aea2e232bfda00db5e6f858f1a60064f70d85fc5192997b132a5691b31eb6d2d", kill_on_drop: false }`
[INFO] [stdout] aea2e232bfda00db5e6f858f1a60064f70d85fc5192997b132a5691b31eb6d2d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+07fecb9cf34c4979a772ba38c99d6d9144768413" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b402037d2699282f528c562536d09742ebb9005cddb03149d2332e7b27d050f
[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" "7b402037d2699282f528c562536d09742ebb9005cddb03149d2332e7b27d050f", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_dsa v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/memtesting.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::transactionlog::*`
[INFO] [stdout]  --> src/main.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use crate::transactionlog::*;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> src/memtesting.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]  --> src/memtesting.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionLog`
[INFO] [stdout]   --> src/transactionlog.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/transactionlog.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/transactionlog.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new_empty() -> TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `a`
[INFO] [stdout]  --> src/memtesting.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 |     a: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `b`
[INFO] [stdout]  --> src/memtesting.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     b: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `c`
[INFO] [stdout]  --> src/memtesting.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     c: u8,
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `TransactionLog`
[INFO] [stdout]   --> src/transactionlog.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub struct TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/transactionlog.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 |     pub fn new(value: String) -> Rc<RefCell<Node>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new_empty`
[INFO] [stdout]   --> src/transactionlog.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn new_empty() -> TransactionLog {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/main.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn new(is_open: bool) -> Door {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `Sanitize` should have a snake case name
[INFO] [stdout]   --> src/conmut.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn Sanitize(s: String) -> String {
[INFO] [stdout]    |        ^^^^^^^^ help: convert the identifier to snake case (notice the capitalization): `sanitize`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "7b402037d2699282f528c562536d09742ebb9005cddb03149d2332e7b27d050f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b402037d2699282f528c562536d09742ebb9005cddb03149d2332e7b27d050f", kill_on_drop: false }`
[INFO] [stdout] 7b402037d2699282f528c562536d09742ebb9005cddb03149d2332e7b27d050f