[INFO] cloning repository https://github.com/liamzebedee/gfs-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/liamzebedee/gfs-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamzebedee%2Fgfs-rs", kill_on_drop: false }`
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[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 262d2459f87e45a1a933651a5329e54cedb2f3d0
[INFO] testing liamzebedee/gfs-rs against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamzebedee%2Fgfs-rs" "/workspace/builds/worker-3-tc1/source", kill_on_drop: false }`
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[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/liamzebedee/gfs-rs
[INFO] finished tweaking git repo https://github.com/liamzebedee/gfs-rs
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[INFO] validating manifest of git repo https://github.com/liamzebedee/gfs-rs on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/liamzebedee/gfs-rs 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" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "c1783115fbe108524985eedcff56c1a616f89fcabc16f69503c7899228fbe0ce", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "dd09dbb9571dcf2d3eaebce6adb5b2cda7157cb302a32a22bd0663923ba01452", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/master.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunkserver::{*};
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/chunkserver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/chunkserver.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/chunkserver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]  --> src/chunkserver.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::vec;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/client.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::chunkserver::{*};
[INFO] [stdout]   |                          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/client.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunk::{self, *};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/chunkserver.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `replication_factor`
[INFO] [stdout]    --> src/master.rs:149:59
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn get_free_chunkservers(&self, _num_chunks: u64, replication_factor: u8) -> Vec<String> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_replication_factor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/master.rs:184:18
[INFO] [stdout]     |
[INFO] [stdout] 184 |             for (i, chunk_location) in chunk_locations.iter().enumerate() {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hasher`
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hasher`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut free_chunkservers = self.master.lock().unwrap().get_free_chunkservers(chunks.len() as u64, replication);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkLocation` is never constructed
[INFO] [stdout]   --> src/master.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct ChunkLocation {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 30.20s
[INFO] running `Command { std: "docker" "inspect" "dd09dbb9571dcf2d3eaebce6adb5b2cda7157cb302a32a22bd0663923ba01452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd09dbb9571dcf2d3eaebce6adb5b2cda7157cb302a32a22bd0663923ba01452", kill_on_drop: false }`
[INFO] [stdout] dd09dbb9571dcf2d3eaebce6adb5b2cda7157cb302a32a22bd0663923ba01452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4114aec3ac21a5e1b440bd9f1006d8d8784ac6f0de0cc289ae7d950a0dad5a9
[INFO] running `Command { std: "docker" "start" "-a" "d4114aec3ac21a5e1b440bd9f1006d8d8784ac6f0de0cc289ae7d950a0dad5a9", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/master.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunkserver::{*};
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/chunkserver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/chunkserver.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/chunkserver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]  --> src/chunkserver.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::vec;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/client.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::chunkserver::{*};
[INFO] [stdout]   |                          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/client.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunk::{self, *};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/chunkserver.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `replication_factor`
[INFO] [stdout]    --> src/master.rs:149:59
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn get_free_chunkservers(&self, _num_chunks: u64, replication_factor: u8) -> Vec<String> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_replication_factor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/master.rs:184:18
[INFO] [stdout]     |
[INFO] [stdout] 184 |             for (i, chunk_location) in chunk_locations.iter().enumerate() {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hasher`
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hasher`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut free_chunkservers = self.master.lock().unwrap().get_free_chunkservers(chunks.len() as u64, replication);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkLocation` is never constructed
[INFO] [stdout]   --> src/master.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct ChunkLocation {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling google-file-system v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::sync::mpsc`
[INFO] [stdout]  --> examples/stack/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::sync::mpsc;
[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: `std::thread`
[INFO] [stdout]  --> examples/stack/main.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::thread;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/master.rs:8:26
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunkserver::{*};
[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: `std::collections::HashMap`
[INFO] [stdout]  --> src/chunkserver.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::HashMap;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stdout]  --> src/chunkserver.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 | use serde::{Serialize, Deserialize};
[INFO] [stdout]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::path::Path`
[INFO] [stdout]  --> src/chunkserver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::path::Path;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::vec`
[INFO] [stdout]  --> src/chunkserver.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use std::vec;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::Error`
[INFO] [stdout]  --> src/client.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::fmt::Error;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `*`
[INFO] [stdout]  --> src/client.rs:5:26
[INFO] [stdout]   |
[INFO] [stdout] 5 | use crate::chunkserver::{*};
[INFO] [stdout]   |                          ^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/client.rs:8:20
[INFO] [stdout]   |
[INFO] [stdout] 8 | use crate::chunk::{self, *};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/basic/main.rs:111:5
[INFO] [stdout]     |
[INFO] [stdout] 111 |     client.append("/test", "hello world\n".as_bytes(), network.clone());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 111 |     let _ = client.append("/test", "hello world\n".as_bytes(), network.clone());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/basic/main.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     client.append("/test", "hello again".as_bytes(), network.clone());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 112 |     let _ = client.append("/test", "hello again".as_bytes(), network.clone());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> examples/basic/main.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     client.append("/test", "dog".as_bytes(), network.clone());
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 113 |     let _ = client.append("/test", "dog".as_bytes(), network.clone());
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sha2::Digest`
[INFO] [stdout]  --> src/chunkserver.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use sha2::Digest;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `replication_factor`
[INFO] [stdout]    --> src/master.rs:149:59
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn get_free_chunkservers(&self, _num_chunks: u64, replication_factor: u8) -> Vec<String> {
[INFO] [stdout]     |                                                           ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_replication_factor`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/master.rs:184:18
[INFO] [stdout]     |
[INFO] [stdout] 184 |             for (i, chunk_location) in chunk_locations.iter().enumerate() {
[INFO] [stdout]     |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ----^^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `hasher`
[INFO] [stdout]   --> src/chunkserver.rs:73:21
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 let mut hasher = Hasher::new();
[INFO] [stdout]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hasher`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/client.rs:102:13
[INFO] [stdout]     |
[INFO] [stdout] 102 |         let mut free_chunkservers = self.master.lock().unwrap().get_free_chunkservers(chunks.len() as u64, replication);
[INFO] [stdout]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ChunkLocation` is never constructed
[INFO] [stdout]   --> src/master.rs:91:8
[INFO] [stdout]    |
[INFO] [stdout] 91 | struct ChunkLocation {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "d4114aec3ac21a5e1b440bd9f1006d8d8784ac6f0de0cc289ae7d950a0dad5a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4114aec3ac21a5e1b440bd9f1006d8d8784ac6f0de0cc289ae7d950a0dad5a9", kill_on_drop: false }`
[INFO] [stdout] d4114aec3ac21a5e1b440bd9f1006d8d8784ac6f0de0cc289ae7d950a0dad5a9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9d850528a217e88b5d85299ea169d10adff09d5567f784b388823916d4a51586
[INFO] running `Command { std: "docker" "start" "-a" "9d850528a217e88b5d85299ea169d10adff09d5567f784b388823916d4a51586", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `*`
[INFO] [stderr]  --> src/master.rs:8:26
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::chunkserver::{*};
[INFO] [stderr]   |                          ^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/chunkserver.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize` and `Serialize`
[INFO] [stderr]  --> src/chunkserver.rs:2:13
[INFO] [stderr]   |
[INFO] [stderr] 2 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::path::Path`
[INFO] [stderr]  --> src/chunkserver.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::path::Path;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::vec`
[INFO] [stderr]  --> src/chunkserver.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::vec;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fmt::Error`
[INFO] [stderr]  --> src/client.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::fmt::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `*`
[INFO] [stderr]  --> src/client.rs:5:26
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::chunkserver::{*};
[INFO] [stderr]   |                          ^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `self`
[INFO] [stderr]  --> src/client.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 | use crate::chunk::{self, *};
[INFO] [stderr]   |                    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `sha2::Digest`
[INFO] [stderr]  --> src/chunkserver.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use sha2::Digest;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `replication_factor`
[INFO] [stderr]    --> src/master.rs:149:59
[INFO] [stderr]     |
[INFO] [stderr] 149 |     pub fn get_free_chunkservers(&self, _num_chunks: u64, replication_factor: u8) -> Vec<String> {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_replication_factor`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `i`
[INFO] [stderr]    --> src/master.rs:184:18
[INFO] [stderr]     |
[INFO] [stderr] 184 |             for (i, chunk_location) in chunk_locations.iter().enumerate() {
[INFO] [stderr]     |                  ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/chunkserver.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 let mut hasher = Hasher::new();
[INFO] [stderr]    |                     ----^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `hasher`
[INFO] [stderr]   --> src/chunkserver.rs:73:21
[INFO] [stderr]    |
[INFO] [stderr] 73 |                 let mut hasher = Hasher::new();
[INFO] [stderr]    |                     ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_hasher`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client.rs:102:13
[INFO] [stderr]     |
[INFO] [stderr] 102 |         let mut free_chunkservers = self.master.lock().unwrap().get_free_chunkservers(chunks.len() as u64, replication);
[INFO] [stderr]     |             ----^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: struct `ChunkLocation` is never constructed
[INFO] [stderr]   --> src/master.rs:91:8
[INFO] [stderr]    |
[INFO] [stderr] 91 | struct ChunkLocation {
[INFO] [stderr]    |        ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `google-file-system` (lib) generated 15 warnings (run `cargo fix --lib -p google-file-system` to apply 13 suggestions)
[INFO] [stderr] warning: `google-file-system` (lib test) generated 15 warnings (15 duplicates)
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> examples/basic/main.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     client.append("/test", "hello world\n".as_bytes(), network.clone());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 111 |     let _ = client.append("/test", "hello world\n".as_bytes(), network.clone());
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> examples/basic/main.rs:112:5
[INFO] [stderr]     |
[INFO] [stderr] 112 |     client.append("/test", "hello again".as_bytes(), network.clone());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 112 |     let _ = client.append("/test", "hello again".as_bytes(), network.clone());
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> examples/basic/main.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     client.append("/test", "dog".as_bytes(), network.clone());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 113 |     let _ = client.append("/test", "dog".as_bytes(), network.clone());
[INFO] [stderr]     |     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::sync::mpsc`
[INFO] [stderr]  --> examples/stack/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::sync::mpsc;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> examples/stack/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `google-file-system` (example "basic") generated 3 warnings
[INFO] [stderr] warning: `google-file-system` (example "stack") generated 2 warnings (run `cargo fix --example "stack" -p google-file-system` to apply 2 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/gfs-8816d4a5fccf654f)
[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 gfs
[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] running `Command { std: "docker" "inspect" "9d850528a217e88b5d85299ea169d10adff09d5567f784b388823916d4a51586", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9d850528a217e88b5d85299ea169d10adff09d5567f784b388823916d4a51586", kill_on_drop: false }`
[INFO] [stdout] 9d850528a217e88b5d85299ea169d10adff09d5567f784b388823916d4a51586
