[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 }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fliamzebedee%2Fgfs-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 262d2459f87e45a1a933651a5329e54cedb2f3d0
[INFO] testing liamzebedee/gfs-rs against try#c2e32f1c9652b13ed99608599c1e855462f421f3 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-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[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
[INFO] tweaked toml for git repo https://github.com/liamzebedee/gfs-rs written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/liamzebedee/gfs-rs on toolchain c2e32f1c9652b13ed99608599c1e855462f421f3
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "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" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 743c6b9b1531d5531c94562f189d5296b64a50071d9c9300ea85104520378600
[INFO] running `Command { std: "docker" "start" "-a" "743c6b9b1531d5531c94562f189d5296b64a50071d9c9300ea85104520378600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "743c6b9b1531d5531c94562f189d5296b64a50071d9c9300ea85104520378600", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "743c6b9b1531d5531c94562f189d5296b64a50071d9c9300ea85104520378600", kill_on_drop: false }`
[INFO] [stdout] 743c6b9b1531d5531c94562f189d5296b64a50071d9c9300ea85104520378600
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bb9823cb5987be0e7346455696916692774af1f7dd89b253938b7fc5a6403176
[INFO] running `Command { std: "docker" "start" "-a" "bb9823cb5987be0e7346455696916692774af1f7dd89b253938b7fc5a6403176", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.89
[INFO] [stderr]    Compiling unicode-ident v1.0.13
[INFO] [stderr]    Compiling autocfg v1.4.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.20
[INFO] [stderr]    Compiling libc v0.2.161
[INFO] [stderr]    Compiling version_check v0.9.5
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling rayon-core v1.12.1
[INFO] [stderr]    Compiling thiserror v1.0.65
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling either v1.13.0
[INFO] [stderr]    Compiling rust_decimal v1.36.0
[INFO] [stderr]    Compiling smallvec v1.13.2
[INFO] [stderr]    Compiling scopeguard v1.2.0
[INFO] [stderr]    Compiling serde v1.0.213
[INFO] [stderr]    Compiling equivalent v1.0.1
[INFO] [stderr]    Compiling allocator-api2 v0.2.18
[INFO] [stderr]    Compiling protobuf v3.7.1
[INFO] [stderr]    Compiling arrayvec v0.7.6
[INFO] [stderr]    Compiling serde_json v1.0.132
[INFO] [stderr]    Compiling foldhash v0.1.3
[INFO] [stderr]    Compiling once_cell v1.20.2
[INFO] [stderr]    Compiling cpufeatures v0.2.14
[INFO] [stderr]    Compiling pin-project-lite v0.2.14
[INFO] [stderr]    Compiling itoa v1.0.11
[INFO] [stderr]    Compiling utf8-width v0.1.7
[INFO] [stderr]    Compiling memchr v2.7.4
[INFO] [stderr]    Compiling ryu v1.0.18
[INFO] [stderr]    Compiling bytes v1.8.0
[INFO] [stderr]    Compiling crc32fast v1.4.2
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling hashbrown v0.15.0
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling quote v1.0.37
[INFO] [stderr]    Compiling mio v1.0.2
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling socket2 v0.5.7
[INFO] [stderr]    Compiling syn v2.0.85
[INFO] [stderr]    Compiling crossbeam-deque v0.8.5
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling lru v0.12.5
[INFO] [stderr]    Compiling block-buffer v0.10.4
[INFO] [stderr]    Compiling crypto-common v0.1.6
[INFO] [stderr]    Compiling digest v0.10.7
[INFO] [stderr]    Compiling rayon v1.10.0
[INFO] [stderr]    Compiling byte-unit v5.1.4
[INFO] [stderr]    Compiling sha2 v0.10.8
[INFO] [stderr]    Compiling thiserror-impl v1.0.65
[INFO] [stderr]    Compiling serde_derive v1.0.213
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling fid-rs v0.2.0
[INFO] [stderr]    Compiling louds-rs v0.7.0
[INFO] [stderr]    Compiling trie-rs v0.4.2
[INFO] [stderr]    Compiling tokio v1.41.0
[INFO] [stderr]    Compiling protobuf-support v3.7.1
[INFO] [stderr]    Compiling google-file-system v0.1.0 (/opt/rustwide/workdir)
[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 30.82s
[INFO] running `Command { std: "docker" "inspect" "bb9823cb5987be0e7346455696916692774af1f7dd89b253938b7fc5a6403176", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb9823cb5987be0e7346455696916692774af1f7dd89b253938b7fc5a6403176", kill_on_drop: false }`
[INFO] [stdout] bb9823cb5987be0e7346455696916692774af1f7dd89b253938b7fc5a6403176
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95b6c8c4e17f9c54293892c3efdda5c73b248144302bfe3599815443d99d6a09
[INFO] running `Command { std: "docker" "start" "-a" "95b6c8c4e17f9c54293892c3efdda5c73b248144302bfe3599815443d99d6a09", 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] [stderr]    Compiling google-file-system v0.1.0 (/opt/rustwide/workdir)
[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] [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 1.03s
[INFO] running `Command { std: "docker" "inspect" "95b6c8c4e17f9c54293892c3efdda5c73b248144302bfe3599815443d99d6a09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95b6c8c4e17f9c54293892c3efdda5c73b248144302bfe3599815443d99d6a09", kill_on_drop: false }`
[INFO] [stdout] 95b6c8c4e17f9c54293892c3efdda5c73b248144302bfe3599815443d99d6a09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c2e32f1c9652b13ed99608599c1e855462f421f3" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 30a8f918c52fdfd56e38937a1270c97c63383310097061b9ef881fd496dc4345
[INFO] running `Command { std: "docker" "start" "-a" "30a8f918c52fdfd56e38937a1270c97c63383310097061b9ef881fd496dc4345", 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 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/gfs-8816d4a5fccf654f)
[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] [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" "30a8f918c52fdfd56e38937a1270c97c63383310097061b9ef881fd496dc4345", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a8f918c52fdfd56e38937a1270c97c63383310097061b9ef881fd496dc4345", kill_on_drop: false }`
[INFO] [stdout] 30a8f918c52fdfd56e38937a1270c97c63383310097061b9ef881fd496dc4345
