[INFO] cloning repository https://github.com/wjlewis/little_scheme
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wjlewis/little_scheme" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjlewis%2Flittle_scheme", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjlewis%2Flittle_scheme'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] be5bdc48658ddf85626e38b87afe71f9097d7a54
[INFO] testing wjlewis/little_scheme against try#bd7d74411512a3dd3b35d2f699c51dd2557c7e7e+cargoflags=-Zbuild-dir-new-layout for pr-149852-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwjlewis%2Flittle_scheme" "/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/wjlewis/little_scheme
[INFO] finished tweaking git repo https://github.com/wjlewis/little_scheme
[INFO] tweaked toml for git repo https://github.com/wjlewis/little_scheme written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/wjlewis/little_scheme on toolchain bd7d74411512a3dd3b35d2f699c51dd2557c7e7e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/wjlewis/little_scheme 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" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f9c59b6d40c0d89cc9e9c14eafee1ed2ed3a09339c287b957b3dac03f0e2fd92
[INFO] running `Command { std: "docker" "start" "-a" "f9c59b6d40c0d89cc9e9c14eafee1ed2ed3a09339c287b957b3dac03f0e2fd92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9c59b6d40c0d89cc9e9c14eafee1ed2ed3a09339c287b957b3dac03f0e2fd92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9c59b6d40c0d89cc9e9c14eafee1ed2ed3a09339c287b957b3dac03f0e2fd92", kill_on_drop: false }`
[INFO] [stdout] f9c59b6d40c0d89cc9e9c14eafee1ed2ed3a09339c287b957b3dac03f0e2fd92
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "build" "--frozen" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] befd456bab4897259778b9ee8dcbec77093f215b89577d4d138a94e949f5daf9
[INFO] running `Command { std: "docker" "start" "-a" "befd456bab4897259778b9ee8dcbec77093f215b89577d4d138a94e949f5daf9", kill_on_drop: false }`
[INFO] [stderr]    Compiling little_scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum `SchemeObj` is never used
[INFO] [stdout]  --> src/data.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum SchemeObj {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Heap` is never constructed
[INFO] [stdout]  --> src/heap.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Heap {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `alloc_bytes`, `alloc_block`, `collect`, `mark`, and `sweep` are never used
[INFO] [stdout]    --> src/heap.rs:25:12
[INFO] [stdout]     |
[INFO] [stdout]  24 | impl Heap {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  25 |     pub fn new(size: usize, get_roots: Box<dyn Fn() -> Vec<usize>>) -> Heap {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  45 |     fn alloc_bytes(&mut self, n: usize, attempt_collect: bool) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     fn alloc_block(&mut self, header: &mut Header, n: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn collect(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn mark(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     fn sweep(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `children` is never used
[INFO] [stdout]    --> src/heap.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn children<M: Mem>(mem: &M, parent_addr: usize) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `Mem` is never used
[INFO] [stdout]  --> src/memory.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait Mem {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MemRead` is never used
[INFO] [stdout]   --> src/memory.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub trait MemRead {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MemWrite` is never used
[INFO] [stdout]   --> src/memory.rs:37:11
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub trait MemWrite {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/memory/header.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memory/header.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Header {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 23 |     /// Creates a header for a freshly allocated block of memory.
[INFO] [stdout] 24 |     pub fn new(next: usize, size: usize, allocd: bool) -> Header {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.15s
[INFO] running `Command { std: "docker" "inspect" "befd456bab4897259778b9ee8dcbec77093f215b89577d4d138a94e949f5daf9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "befd456bab4897259778b9ee8dcbec77093f215b89577d4d138a94e949f5daf9", kill_on_drop: false }`
[INFO] [stdout] befd456bab4897259778b9ee8dcbec77093f215b89577d4d138a94e949f5daf9
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "--no-run" "--message-format=json" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] cd8298806953d9f3f82d89ae1d81e1fc5260abf4bf37fcb7a0da82f92f08d97c
[INFO] running `Command { std: "docker" "start" "-a" "cd8298806953d9f3f82d89ae1d81e1fc5260abf4bf37fcb7a0da82f92f08d97c", kill_on_drop: false }`
[INFO] [stdout] warning: enum `SchemeObj` is never used
[INFO] [stdout]  --> src/data.rs:8:10
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub enum SchemeObj {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Heap` is never constructed
[INFO] [stdout]  --> src/heap.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Heap {
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `alloc_bytes`, `alloc_block`, `collect`, `mark`, and `sweep` are never used
[INFO] [stdout]    --> src/heap.rs:25:12
[INFO] [stdout]     |
[INFO] [stdout]  24 | impl Heap {
[INFO] [stdout]     | --------- associated items in this implementation
[INFO] [stdout]  25 |     pub fn new(size: usize, get_roots: Box<dyn Fn() -> Vec<usize>>) -> Heap {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout]  45 |     fn alloc_bytes(&mut self, n: usize, attempt_collect: bool) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  81 |     fn alloc_block(&mut self, header: &mut Header, n: usize) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout]  97 |     fn collect(&mut self) {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 102 |     fn mark(&mut self) {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 122 |     fn sweep(&mut self) {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `children` is never used
[INFO] [stdout]    --> src/heap.rs:159:8
[INFO] [stdout]     |
[INFO] [stdout] 159 | pub fn children<M: Mem>(mem: &M, parent_addr: usize) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling little_scheme v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait `Mem` is never used
[INFO] [stdout]  --> src/memory.rs:9:11
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub trait Mem {
[INFO] [stdout]   |           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MemRead` is never used
[INFO] [stdout]   --> src/memory.rs:30:11
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub trait MemRead {
[INFO] [stdout]    |           ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `MemWrite` is never used
[INFO] [stdout]   --> src/memory.rs:37:11
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub trait MemWrite {
[INFO] [stdout]    |           ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Header` is never constructed
[INFO] [stdout]   --> src/memory/header.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Header {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/memory/header.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | impl Header {
[INFO] [stdout]    | ----------- associated function in this implementation
[INFO] [stdout] 23 |     /// Creates a header for a freshly allocated block of memory.
[INFO] [stdout] 24 |     pub fn new(next: usize, size: usize, allocd: bool) -> Header {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `obj`
[INFO] [stdout]   --> src/memory/header.rs:97:42
[INFO] [stdout]    |
[INFO] [stdout] 97 |         fn alloc<T: MemWrite>(&mut self, obj: &T) -> usize {
[INFO] [stdout]    |                                          ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "cd8298806953d9f3f82d89ae1d81e1fc5260abf4bf37fcb7a0da82f92f08d97c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd8298806953d9f3f82d89ae1d81e1fc5260abf4bf37fcb7a0da82f92f08d97c", kill_on_drop: false }`
[INFO] [stdout] cd8298806953d9f3f82d89ae1d81e1fc5260abf4bf37fcb7a0da82f92f08d97c
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bd7d74411512a3dd3b35d2f699c51dd2557c7e7e" "test" "--frozen" "-Zbuild-dir-new-layout", kill_on_drop: false }`
[INFO] [stdout] a7ce2d00be71acdc147b63861548243d209f66c61c43a739bfb4f7b3e3a878f2
[INFO] running `Command { std: "docker" "start" "-a" "a7ce2d00be71acdc147b63861548243d209f66c61c43a739bfb4f7b3e3a878f2", kill_on_drop: false }`
[INFO] [stderr] warning: enum `SchemeObj` is never used
[INFO] [stderr]  --> src/data.rs:8:10
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub enum SchemeObj {
[INFO] [stderr]   |          ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Heap` is never constructed
[INFO] [stderr]  --> src/heap.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub struct Heap {
[INFO] [stderr]   |            ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `alloc_bytes`, `alloc_block`, `collect`, `mark`, and `sweep` are never used
[INFO] [stderr]    --> src/heap.rs:25:12
[INFO] [stderr]     |
[INFO] [stderr]  24 | impl Heap {
[INFO] [stderr]     | --------- associated items in this implementation
[INFO] [stderr]  25 |     pub fn new(size: usize, get_roots: Box<dyn Fn() -> Vec<usize>>) -> Heap {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] ...
[INFO] [stderr]  45 |     fn alloc_bytes(&mut self, n: usize, attempt_collect: bool) -> usize {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  81 |     fn alloc_block(&mut self, header: &mut Header, n: usize) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr]  97 |     fn collect(&mut self) {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 102 |     fn mark(&mut self) {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] ...
[INFO] [stderr] 122 |     fn sweep(&mut self) {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `children` is never used
[INFO] [stderr]    --> src/heap.rs:159:8
[INFO] [stderr]     |
[INFO] [stderr] 159 | pub fn children<M: Mem>(mem: &M, parent_addr: usize) -> Vec<usize> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `Mem` is never used
[INFO] [stderr]  --> src/memory.rs:9:11
[INFO] [stderr]   |
[INFO] [stderr] 9 | pub trait Mem {
[INFO] [stderr]   |           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `MemRead` is never used
[INFO] [stderr]   --> src/memory.rs:30:11
[INFO] [stderr]    |
[INFO] [stderr] 30 | pub trait MemRead {
[INFO] [stderr]    |           ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `MemWrite` is never used
[INFO] [stderr]   --> src/memory.rs:37:11
[INFO] [stderr]    |
[INFO] [stderr] 37 | pub trait MemWrite {
[INFO] [stderr]    |           ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Header` is never constructed
[INFO] [stderr]   --> src/memory/header.rs:15:12
[INFO] [stderr]    |
[INFO] [stderr] 15 | pub struct Header {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function `new` is never used
[INFO] [stderr]   --> src/memory/header.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 22 | impl Header {
[INFO] [stderr]    | ----------- associated function in this implementation
[INFO] [stderr] 23 |     /// Creates a header for a freshly allocated block of memory.
[INFO] [stderr] 24 |     pub fn new(next: usize, size: usize, allocd: bool) -> Header {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `little_scheme` (lib) generated 9 warnings
[INFO] [stderr] warning: unused variable: `obj`
[INFO] [stderr]   --> src/memory/header.rs:97:42
[INFO] [stderr]    |
[INFO] [stderr] 97 |         fn alloc<T: MemWrite>(&mut self, obj: &T) -> usize {
[INFO] [stderr]    |                                          ^^^ help: if this is intentional, prefix it with an underscore: `_obj`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `little_scheme` (lib test) generated 1 warning (run `cargo fix --lib -p little_scheme --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/little_scheme/3f9e659f0bb835de/deps/little_scheme-3f9e659f0bb835de)
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test heap::tests::alloc_no_split ... ok
[INFO] [stdout] test heap::tests::initalize ... ok
[INFO] [stdout] test heap::tests::alloc_split ... ok
[INFO] [stdout] test memory::aux::tests::read_usize ... ok
[INFO] [stdout] test memory::aux::tests::write_read_usize ... ok
[INFO] [stdout] test memory::aux::tests::write_usize ... ok
[INFO] [stdout] test memory::header::tests::write_read_header ... ok
[INFO] [stdout] test heap::tests::alloc_too_big - should panic ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/main.rs (/opt/rustwide/target/debug/build/little_scheme/106c4e7b8c464395/deps/main-106c4e7b8c464395)
[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 little_scheme
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/memory/aux.rs - memory::aux::usize::read (line 23) ... ignored
[INFO] [stdout] test src/memory/aux.rs - memory::aux::usize::read (line 33) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 2 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a7ce2d00be71acdc147b63861548243d209f66c61c43a739bfb4f7b3e3a878f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7ce2d00be71acdc147b63861548243d209f66c61c43a739bfb4f7b3e3a878f2", kill_on_drop: false }`
[INFO] [stdout] a7ce2d00be71acdc147b63861548243d209f66c61c43a739bfb4f7b3e3a878f2