[INFO] cloning repository https://github.com/mox692/mfs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mox692/mfs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmox692%2Fmfs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmox692%2Fmfs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e101246d6523416246ea3a3d01c4130720a47e2f
[INFO] checking mox692/mfs against try#ddcf048784667508cd676fef4667f88ae15628a3 for pr-148271
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmox692%2Fmfs" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mox692/mfs
[INFO] finished tweaking git repo https://github.com/mox692/mfs
[INFO] tweaked toml for git repo https://github.com/mox692/mfs written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mox692/mfs on toolchain ddcf048784667508cd676fef4667f88ae15628a3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mox692/mfs 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" "+ddcf048784667508cd676fef4667f88ae15628a3" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libc v0.2.124
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7bc0ea88c9dd1e3448d256d1e8222db3655524b70cbd65a4376ab048a720f3e5
[INFO] running `Command { std: "docker" "start" "-a" "7bc0ea88c9dd1e3448d256d1e8222db3655524b70cbd65a4376ab048a720f3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7bc0ea88c9dd1e3448d256d1e8222db3655524b70cbd65a4376ab048a720f3e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bc0ea88c9dd1e3448d256d1e8222db3655524b70cbd65a4376ab048a720f3e5", kill_on_drop: false }`
[INFO] [stdout] 7bc0ea88c9dd1e3448d256d1e8222db3655524b70cbd65a4376ab048a720f3e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+ddcf048784667508cd676fef4667f88ae15628a3" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 254f4636ecd2cf422225dceaa0ecf2f18a4a8c6166bc4518ac6474bdfdd8cd0f
[INFO] running `Command { std: "docker" "start" "-a" "254f4636ecd2cf422225dceaa0ecf2f18a4a8c6166bc4518ac6474bdfdd8cd0f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.124
[INFO] [stderr]     Checking mfs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/common/stack.rs:95:9
[INFO] [stdout]    |
[INFO] [stdout] 95 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stack::VecStack`
[INFO] [stdout]  --> src/common/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use stack::VecStack;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/fs.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error, hash::Hash};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `stack::VecStack`
[INFO] [stdout]  --> src/common/mod.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub use stack::VecStack;
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `hash::Hash`
[INFO] [stdout]  --> src/fs.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{error::Error, hash::Hash};
[INFO] [stdout]   |                         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `super::*`
[INFO] [stdout]   --> src/storage/storage.rs:99:9
[INFO] [stdout]    |
[INFO] [stdout] 99 |     use super::*;
[INFO] [stdout]    |         ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> src/storage/storage.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             s = Self::STORAGE_SIZE - offset
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value_info`
[INFO] [stdout]   --> src/storage/storage.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         value_info: String,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value_info`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/storage/storage.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 |             | Err(e) => Err(MyError::with_msg(String::from("alloc: error"))),
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VecStack` is never constructed
[INFO] [stdout]  --> src/common/stack.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct VecStack<T>
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `new_with_init_data`, `push`, `push_clone`, and `push_rc` are never used
[INFO] [stdout]   --> src/common/stack.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | / impl<T> VecStack<T> 
[INFO] [stdout] 13 | | where
[INFO] [stdout] 14 | |     T: Clone,
[INFO] [stdout] 15 | |     VecStack<T>: AsRef<VecStack<T>>
[INFO] [stdout]    | |___________________________________- associated items in this implementation
[INFO] [stdout] 16 |   {
[INFO] [stdout] 17 |       pub fn new() -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |       pub fn new_with_init_data() -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |       pub fn push(&mut self, data: T) {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |       pub fn push_clone(&mut self, data: T) -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |       pub fn push_rc(&mut self, data: T) -> Rc<Self> {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_addr` and `size` are never read
[INFO] [stdout]   --> src/storage/storage.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct MemStorage<P, Q, D, E> {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 16 |     mem: [u8; 100000],
[INFO] [stdout] 17 |     start_addr: P,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 18 |     size: Q,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_with_allocator` is never used
[INFO] [stdout]   --> src/storage/storage.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl MemStorage<usize, usize, Vec<u8>, MyError> {
[INFO] [stdout]    | ----------------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn new_with_allocator<K>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s` is never read
[INFO] [stdout]   --> src/storage/storage.rs:47:13
[INFO] [stdout]    |
[INFO] [stdout] 47 |             s = Self::STORAGE_SIZE - offset
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value_info`
[INFO] [stdout]   --> src/storage/storage.rs:76:9
[INFO] [stdout]    |
[INFO] [stdout] 76 |         value_info: String,
[INFO] [stdout]    |         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_value_info`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `e`
[INFO] [stdout]   --> src/storage/storage.rs:92:19
[INFO] [stdout]    |
[INFO] [stdout] 92 |             | Err(e) => Err(MyError::with_msg(String::from("alloc: error"))),
[INFO] [stdout]    |                   ^ help: if this is intentional, prefix it with an underscore: `_e`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `VecStack` is never constructed
[INFO] [stdout]  --> src/common/stack.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct VecStack<T>
[INFO] [stdout]   |            ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `new_with_init_data`, `push`, `push_clone`, and `push_rc` are never used
[INFO] [stdout]   --> src/common/stack.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | / impl<T> VecStack<T> 
[INFO] [stdout] 13 | | where
[INFO] [stdout] 14 | |     T: Clone,
[INFO] [stdout] 15 | |     VecStack<T>: AsRef<VecStack<T>>
[INFO] [stdout]    | |___________________________________- associated items in this implementation
[INFO] [stdout] 16 |   {
[INFO] [stdout] 17 |       pub fn new() -> Self {
[INFO] [stdout]    |              ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |       pub fn new_with_init_data() -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 27 |       pub fn push(&mut self, data: T) {
[INFO] [stdout]    |              ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |       pub fn push_clone(&mut self, data: T) -> Self {
[INFO] [stdout]    |              ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |       pub fn push_rc(&mut self, data: T) -> Rc<Self> {
[INFO] [stdout]    |              ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `start_addr` and `size` are never read
[INFO] [stdout]   --> src/storage/storage.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct MemStorage<P, Q, D, E> {
[INFO] [stdout]    |            ---------- fields in this struct
[INFO] [stdout] 16 |     mem: [u8; 100000],
[INFO] [stdout] 17 |     start_addr: P,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 18 |     size: Q,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new_with_allocator` is never used
[INFO] [stdout]   --> src/storage/storage.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 57 | impl MemStorage<usize, usize, Vec<u8>, MyError> {
[INFO] [stdout]    | ----------------------------------------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 72 |     fn new_with_allocator<K>(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "254f4636ecd2cf422225dceaa0ecf2f18a4a8c6166bc4518ac6474bdfdd8cd0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "254f4636ecd2cf422225dceaa0ecf2f18a4a8c6166bc4518ac6474bdfdd8cd0f", kill_on_drop: false }`
[INFO] [stdout] 254f4636ecd2cf422225dceaa0ecf2f18a4a8c6166bc4518ac6474bdfdd8cd0f
