[INFO] updating cached repository apankhurst/REmailFS [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/apankhurst/REmailFS [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/apankhurst/REmailFS" "work/ex/beta-1.38-1/sources/1.37.0/gh/apankhurst/REmailFS"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/apankhurst/REmailFS'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/apankhurst/REmailFS" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS"` [INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] b7eec00928995931ecb87baed640de83ec400536 [INFO] sha for GitHub repo apankhurst/REmailFS: b7eec00928995931ecb87baed640de83ec400536 [INFO] validating manifest of apankhurst/REmailFS on toolchain 1.37.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of apankhurst/REmailFS on toolchain beta-2019-08-13 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing apankhurst/REmailFS [INFO] finished frobbing apankhurst/REmailFS [INFO] frobbed toml for apankhurst/REmailFS written to work/ex/beta-1.38-1/sources/1.37.0/gh/apankhurst/REmailFS/Cargo.toml [INFO] started frobbing apankhurst/REmailFS [INFO] finished frobbing apankhurst/REmailFS [INFO] frobbed toml for apankhurst/REmailFS written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS/Cargo.toml [INFO] crate apankhurst/REmailFS already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing apankhurst/REmailFS against beta-2019-08-13 for beta-1.38-1 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"` [INFO] [stdout] 7304c9d34e02183a264ee11d914a3cd57f319061318b4b4400683d2200a4d658 [INFO] running `"docker" "start" "-a" "7304c9d34e02183a264ee11d914a3cd57f319061318b4b4400683d2200a4d658"` [INFO] [stderr] Compiling quoted_printable v0.4.0 [INFO] [stderr] Compiling fuse v0.3.1 [INFO] [stderr] Compiling openssl-sys v0.9.45 [INFO] [stderr] Compiling mailparse v0.6.5 [INFO] [stderr] Compiling openssl v0.10.21 [INFO] [stderr] Compiling native-tls v0.2.3 [INFO] [stderr] Compiling imap v1.0.1 [INFO] [stderr] Compiling remailfs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::borrow::BorrowMut` [INFO] [stderr] --> src/lib.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Ord` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::cmp::Ord; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Ordering` [INFO] [stderr] --> src/lib.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use std::cmp::Ordering; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `imap_proto::types::Address` [INFO] [stderr] --> src/lib.rs:21:5 [INFO] [stderr] | [INFO] [stderr] 21 | use imap_proto::types::Address; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Name` [INFO] [stderr] --> src/lib.rs:22:24 [INFO] [stderr] | [INFO] [stderr] 22 | use imap::types::{Uid, Name, Fetch}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `ENOSYS` [INFO] [stderr] --> src/lib.rs:23:20 [INFO] [stderr] | [INFO] [stderr] 23 | use libc::{ENOENT, ENOSYS}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `root_mailbox` [INFO] [stderr] --> src/lib.rs:251:17 [INFO] [stderr] | [INFO] [stderr] 251 | let mut root_mailbox = self.mailboxes.get_mut(&1) [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_root_mailbox` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `info` [INFO] [stderr] --> src/lib.rs:391:21 [INFO] [stderr] | [INFO] [stderr] 391 | let mut info = &mailbox.info; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_info` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:228:13 [INFO] [stderr] | [INFO] [stderr] 228 | let mut root_attrs = FileAttr { [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:251:13 [INFO] [stderr] | [INFO] [stderr] 251 | let mut root_mailbox = self.mailboxes.get_mut(&1) [INFO] [stderr] | ----^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:254:13 [INFO] [stderr] | [INFO] [stderr] 254 | let mut all_boxes = match self.imap_session.list(Some(""), Some("*")) { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:268:17 [INFO] [stderr] | [INFO] [stderr] 268 | let mut abs_path = mb.to_string(); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:299:17 [INFO] [stderr] | [INFO] [stderr] 299 | let mut parent = self.mailboxes.get_mut(&inode).unwrap(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:342:17 [INFO] [stderr] | [INFO] [stderr] 342 | let mut split_path: Vec<&str> = abs_path.rsplitn(2, "/") [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:350:17 [INFO] [stderr] | [INFO] [stderr] 350 | let mut parent = self.mailboxes.get_mut(p_inode).unwrap(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:380:13 [INFO] [stderr] | [INFO] [stderr] 380 | let mut mailbox = if mailbox.is_none() { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:391:17 [INFO] [stderr] | [INFO] [stderr] 391 | let mut info = &mailbox.info; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:468:13 [INFO] [stderr] | [INFO] [stderr] 468 | let mut email = self.emails.get_mut(&_ino); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Result` [INFO] [stderr] --> src/error.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | pub type Result = result::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `subject` [INFO] [stderr] --> src/lib.rs:42:5 [INFO] [stderr] | [INFO] [stderr] 42 | subject: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `from` [INFO] [stderr] --> src/lib.rs:43:5 [INFO] [stderr] | [INFO] [stderr] 43 | from: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `date` [INFO] [stderr] --> src/lib.rs:44:5 [INFO] [stderr] | [INFO] [stderr] 44 | date: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_contents` [INFO] [stderr] --> src/lib.rs:58:5 [INFO] [stderr] | [INFO] [stderr] 58 | fn set_contents(&mut self, contents: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_subject` [INFO] [stderr] --> src/lib.rs:62:5 [INFO] [stderr] | [INFO] [stderr] 62 | fn set_subject(&mut self, subject: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_from` [INFO] [stderr] --> src/lib.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | fn set_from(&mut self, from: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_date` [INFO] [stderr] --> src/lib.rs:70:5 [INFO] [stderr] | [INFO] [stderr] 70 | fn set_date(&mut self, date: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `contents_as_bytes` [INFO] [stderr] --> src/lib.rs:74:5 [INFO] [stderr] | [INFO] [stderr] 74 | fn contents_as_bytes(&self) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_info` [INFO] [stderr] --> src/lib.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | fn set_info(&mut self, info: IMAPMailbox) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `has_info` [INFO] [stderr] --> src/lib.rs:106:5 [INFO] [stderr] | [INFO] [stderr] 106 | fn has_info(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `flags` [INFO] [stderr] --> src/lib.rs:110:5 [INFO] [stderr] | [INFO] [stderr] 110 | fn flags(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `permanent_flags` [INFO] [stderr] --> src/lib.rs:118:5 [INFO] [stderr] | [INFO] [stderr] 118 | fn permanent_flags(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `exists` [INFO] [stderr] --> src/lib.rs:126:5 [INFO] [stderr] | [INFO] [stderr] 126 | fn exists(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `recent` [INFO] [stderr] --> src/lib.rs:134:5 [INFO] [stderr] | [INFO] [stderr] 134 | fn recent(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `unseen` [INFO] [stderr] --> src/lib.rs:142:5 [INFO] [stderr] | [INFO] [stderr] 142 | fn unseen(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `uid_next` [INFO] [stderr] --> src/lib.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | fn uid_next(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `uid_validity` [INFO] [stderr] --> src/lib.rs:158:5 [INFO] [stderr] | [INFO] [stderr] 158 | fn uid_validity(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `print` [INFO] [stderr] --> src/lib.rs:166:5 [INFO] [stderr] | [INFO] [stderr] 166 | fn print(&self, tabs: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `username` [INFO] [stderr] --> src/lib.rs:172:5 [INFO] [stderr] | [INFO] [stderr] 172 | username: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `password` [INFO] [stderr] --> src/lib.rs:173:5 [INFO] [stderr] | [INFO] [stderr] 173 | password: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `domain` [INFO] [stderr] --> src/lib.rs:174:5 [INFO] [stderr] | [INFO] [stderr] 174 | domain: String, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `port` [INFO] [stderr] --> src/lib.rs:175:5 [INFO] [stderr] | [INFO] [stderr] 175 | port: u16, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:483:13 [INFO] [stderr] | [INFO] [stderr] 483 | self.imap_session.examine(parent); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 20.83s [INFO] running `"docker" "inspect" "7304c9d34e02183a264ee11d914a3cd57f319061318b4b4400683d2200a4d658"` [INFO] running `"docker" "rm" "-f" "7304c9d34e02183a264ee11d914a3cd57f319061318b4b4400683d2200a4d658"` [INFO] [stdout] 7304c9d34e02183a264ee11d914a3cd57f319061318b4b4400683d2200a4d658 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"` [INFO] [stdout] 023ead83370ec1414afdd10d6d5ea6566e74e2b52b3f1b597deab1551078a563 [INFO] running `"docker" "start" "-a" "023ead83370ec1414afdd10d6d5ea6566e74e2b52b3f1b597deab1551078a563"` [INFO] [stderr] Compiling remailfs v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `std::borrow::BorrowMut` [INFO] [stderr] --> src/lib.rs:9:5 [INFO] [stderr] | [INFO] [stderr] 9 | use std::borrow::BorrowMut; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Ord` [INFO] [stderr] --> src/lib.rs:10:5 [INFO] [stderr] | [INFO] [stderr] 10 | use std::cmp::Ord; [INFO] [stderr] | ^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `std::cmp::Ordering` [INFO] [stderr] --> src/lib.rs:12:5 [INFO] [stderr] | [INFO] [stderr] 12 | use std::cmp::Ordering; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `imap_proto::types::Address` [INFO] [stderr] --> src/lib.rs:21:5 [INFO] [stderr] | [INFO] [stderr] 21 | use imap_proto::types::Address; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `Name` [INFO] [stderr] --> src/lib.rs:22:24 [INFO] [stderr] | [INFO] [stderr] 22 | use imap::types::{Uid, Name, Fetch}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused import: `ENOSYS` [INFO] [stderr] --> src/lib.rs:23:20 [INFO] [stderr] | [INFO] [stderr] 23 | use libc::{ENOENT, ENOSYS}; [INFO] [stderr] | ^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `root_mailbox` [INFO] [stderr] --> src/lib.rs:251:17 [INFO] [stderr] | [INFO] [stderr] 251 | let mut root_mailbox = self.mailboxes.get_mut(&1) [INFO] [stderr] | ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_root_mailbox` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `info` [INFO] [stderr] --> src/lib.rs:391:21 [INFO] [stderr] | [INFO] [stderr] 391 | let mut info = &mailbox.info; [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_info` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:228:13 [INFO] [stderr] | [INFO] [stderr] 228 | let mut root_attrs = FileAttr { [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_mut)]` on by default [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:251:13 [INFO] [stderr] | [INFO] [stderr] 251 | let mut root_mailbox = self.mailboxes.get_mut(&1) [INFO] [stderr] | ----^^^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:254:13 [INFO] [stderr] | [INFO] [stderr] 254 | let mut all_boxes = match self.imap_session.list(Some(""), Some("*")) { [INFO] [stderr] | ----^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:268:17 [INFO] [stderr] | [INFO] [stderr] 268 | let mut abs_path = mb.to_string(); [INFO] [stderr] | ----^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:299:17 [INFO] [stderr] | [INFO] [stderr] 299 | let mut parent = self.mailboxes.get_mut(&inode).unwrap(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:342:17 [INFO] [stderr] | [INFO] [stderr] 342 | let mut split_path: Vec<&str> = abs_path.rsplitn(2, "/") [INFO] [stderr] | ----^^^^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:350:17 [INFO] [stderr] | [INFO] [stderr] 350 | let mut parent = self.mailboxes.get_mut(p_inode).unwrap(); [INFO] [stderr] | ----^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:380:13 [INFO] [stderr] | [INFO] [stderr] 380 | let mut mailbox = if mailbox.is_none() { [INFO] [stderr] | ----^^^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:391:17 [INFO] [stderr] | [INFO] [stderr] 391 | let mut info = &mailbox.info; [INFO] [stderr] | ----^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: variable does not need to be mutable [INFO] [stderr] --> src/lib.rs:468:13 [INFO] [stderr] | [INFO] [stderr] 468 | let mut email = self.emails.get_mut(&_ino); [INFO] [stderr] | ----^^^^^ [INFO] [stderr] | | [INFO] [stderr] | help: remove this `mut` [INFO] [stderr] [INFO] [stderr] warning: type alias is never used: `Result` [INFO] [stderr] --> src/error.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | pub type Result = result::Result; [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(dead_code)]` on by default [INFO] [stderr] [INFO] [stderr] warning: field is never used: `subject` [INFO] [stderr] --> src/lib.rs:42:5 [INFO] [stderr] | [INFO] [stderr] 42 | subject: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `from` [INFO] [stderr] --> src/lib.rs:43:5 [INFO] [stderr] | [INFO] [stderr] 43 | from: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `date` [INFO] [stderr] --> src/lib.rs:44:5 [INFO] [stderr] | [INFO] [stderr] 44 | date: Option, [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_contents` [INFO] [stderr] --> src/lib.rs:58:5 [INFO] [stderr] | [INFO] [stderr] 58 | fn set_contents(&mut self, contents: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_subject` [INFO] [stderr] --> src/lib.rs:62:5 [INFO] [stderr] | [INFO] [stderr] 62 | fn set_subject(&mut self, subject: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_from` [INFO] [stderr] --> src/lib.rs:66:5 [INFO] [stderr] | [INFO] [stderr] 66 | fn set_from(&mut self, from: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_date` [INFO] [stderr] --> src/lib.rs:70:5 [INFO] [stderr] | [INFO] [stderr] 70 | fn set_date(&mut self, date: String) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `contents_as_bytes` [INFO] [stderr] --> src/lib.rs:74:5 [INFO] [stderr] | [INFO] [stderr] 74 | fn contents_as_bytes(&self) -> Vec { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `set_info` [INFO] [stderr] --> src/lib.rs:102:5 [INFO] [stderr] | [INFO] [stderr] 102 | fn set_info(&mut self, info: IMAPMailbox) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `has_info` [INFO] [stderr] --> src/lib.rs:106:5 [INFO] [stderr] | [INFO] [stderr] 106 | fn has_info(&self) -> bool { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `flags` [INFO] [stderr] --> src/lib.rs:110:5 [INFO] [stderr] | [INFO] [stderr] 110 | fn flags(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `permanent_flags` [INFO] [stderr] --> src/lib.rs:118:5 [INFO] [stderr] | [INFO] [stderr] 118 | fn permanent_flags(&self) -> Option> { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `exists` [INFO] [stderr] --> src/lib.rs:126:5 [INFO] [stderr] | [INFO] [stderr] 126 | fn exists(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `recent` [INFO] [stderr] --> src/lib.rs:134:5 [INFO] [stderr] | [INFO] [stderr] 134 | fn recent(&self) -> u32 { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `unseen` [INFO] [stderr] --> src/lib.rs:142:5 [INFO] [stderr] | [INFO] [stderr] 142 | fn unseen(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `uid_next` [INFO] [stderr] --> src/lib.rs:150:5 [INFO] [stderr] | [INFO] [stderr] 150 | fn uid_next(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `uid_validity` [INFO] [stderr] --> src/lib.rs:158:5 [INFO] [stderr] | [INFO] [stderr] 158 | fn uid_validity(&self) -> Option { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: method is never used: `print` [INFO] [stderr] --> src/lib.rs:166:5 [INFO] [stderr] | [INFO] [stderr] 166 | fn print(&self, tabs: usize) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `username` [INFO] [stderr] --> src/lib.rs:172:5 [INFO] [stderr] | [INFO] [stderr] 172 | username: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `password` [INFO] [stderr] --> src/lib.rs:173:5 [INFO] [stderr] | [INFO] [stderr] 173 | password: String, [INFO] [stderr] | ^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `domain` [INFO] [stderr] --> src/lib.rs:174:5 [INFO] [stderr] | [INFO] [stderr] 174 | domain: String, [INFO] [stderr] | ^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: field is never used: `port` [INFO] [stderr] --> src/lib.rs:175:5 [INFO] [stderr] | [INFO] [stderr] 175 | port: u16, [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/lib.rs:483:13 [INFO] [stderr] | [INFO] [stderr] 483 | self.imap_session.examine(parent); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.84s [INFO] running `"docker" "inspect" "023ead83370ec1414afdd10d6d5ea6566e74e2b52b3f1b597deab1551078a563"` [INFO] running `"docker" "rm" "-f" "023ead83370ec1414afdd10d6d5ea6566e74e2b52b3f1b597deab1551078a563"` [INFO] [stdout] 023ead83370ec1414afdd10d6d5ea6566e74e2b52b3f1b597deab1551078a563 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/apankhurst/REmailFS:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen"` [INFO] [stdout] e1661a1e82e7aad5bee386d06947fc52c59409cb72930b5300ed0adc222b41c2 [INFO] running `"docker" "start" "-a" "e1661a1e82e7aad5bee386d06947fc52c59409cb72930b5300ed0adc222b41c2"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.07s [INFO] [stderr] Running /opt/crater/target/debug/deps/remailfs-faac4e8a80b33566 [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 [INFO] [stdout] [INFO] [stderr] Running /opt/crater/target/debug/deps/remailfs-34ecd7cf07cfbb61 [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 [INFO] [stdout] [INFO] [stderr] Doc-tests remailfs [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 [INFO] [stdout] [INFO] running `"docker" "inspect" "e1661a1e82e7aad5bee386d06947fc52c59409cb72930b5300ed0adc222b41c2"` [INFO] running `"docker" "rm" "-f" "e1661a1e82e7aad5bee386d06947fc52c59409cb72930b5300ed0adc222b41c2"` [INFO] [stdout] e1661a1e82e7aad5bee386d06947fc52c59409cb72930b5300ed0adc222b41c2