[INFO] crate mnt 0.3.1 is already in cache
[INFO] checking mnt-0.3.1 against try#0ab79c4b48ad19260fa46623f452c1b403a360e8 for pr-74315
[INFO] extracting crate mnt 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate mnt 0.3.1 on toolchain 0ab79c4b48ad19260fa46623f452c1b403a360e8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate mnt 0.3.1
[INFO] finished tweaking crates.io crate mnt 0.3.1
[INFO] tweaked toml for crates.io crate mnt 0.3.1 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] afafc8cba7f4a9927ddf2f5c2ea0ea6dd0c8c6b7d067b0888369ccf543a034ad
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "afafc8cba7f4a9927ddf2f5c2ea0ea6dd0c8c6b7d067b0888369ccf543a034ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "afafc8cba7f4a9927ddf2f5c2ea0ea6dd0c8c6b7d067b0888369ccf543a034ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afafc8cba7f4a9927ddf2f5c2ea0ea6dd0c8c6b7d067b0888369ccf543a034ad", kill_on_drop: false }`
[INFO] [stdout] afafc8cba7f4a9927ddf2f5c2ea0ea6dd0c8c6b7d067b0888369ccf543a034ad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+0ab79c4b48ad19260fa46623f452c1b403a360e8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b5f5432774fd6c10d571e0103514f058275dcf675f63d22811a6a05c830dcd79
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b5f5432774fd6c10d571e0103514f058275dcf675f63d22811a6a05c830dcd79", kill_on_drop: false }`
[INFO] [stderr]     Checking mnt v0.3.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:116:19
[INFO] [stdout]     |
[INFO] [stdout] 116 |             spec: try!(tokens.next().ok_or(LineError::MissingSpec)).to_string(),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 let file = try!(tokens.next().ok_or(LineError::MissingFile));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:125:22
[INFO] [stdout]     |
[INFO] [stdout] 125 |             vfstype: try!(tokens.next().ok_or(LineError::MissingVfstype)).to_string(),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |             mntops: try!(tokens.next().ok_or(LineError::MissingMntops))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:130:28
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 let freq = try!(tokens.next().ok_or(LineError::MissingFreq));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let passno = try!(tokens.next().ok_or(LineError::MissingPassno));
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:167:30
[INFO] [stdout]     |
[INFO] [stdout] 167 |     get_submounts_from(root, try!(MountIter::new_from_proc()))
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:188:28
[INFO] [stdout]     |
[INFO] [stdout] 188 |     get_mount_from(target, try!(MountIter::new_from_proc()))
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:277:20
[INFO] [stdout]     |
[INFO] [stdout] 277 |         let file = try!(File::open(PROC_MOUNTS));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parse.rs:452:79
[INFO] [stdout]     |
[INFO] [stdout] 452 |         let mut mounts = MountIter::new(buf.clone()).map(|m| m.ok().unwrap());;
[INFO] [stdout]     |                                                                               ^ help: remove this semicolon
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(redundant_semicolons)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parse.rs:456:79
[INFO] [stdout]     |
[INFO] [stdout] 456 |         let mut mounts = MountIter::new(buf.clone()).map(|m| m.ok().unwrap());;
[INFO] [stdout]     |                                                                               ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parse.rs:460:79
[INFO] [stdout]     |
[INFO] [stdout] 460 |         let mut mounts = MountIter::new(buf.clone()).map(|m| m.ok().unwrap());;
[INFO] [stdout]     |                                                                               ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary trailing semicolon
[INFO] [stdout]    --> src/parse.rs:464:79
[INFO] [stdout]     |
[INFO] [stdout] 464 |         let mut mounts = MountIter::new(buf.clone()).map(|m| m.ok().unwrap());;
[INFO] [stdout]     |                                                                               ^ help: remove this semicolon
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:116:19
[INFO] [stdout]     |
[INFO] [stdout] 116 |             spec: try!(tokens.next().ok_or(LineError::MissingSpec)).to_string(),
[INFO] [stdout]     |                   ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:118:28
[INFO] [stdout]     |
[INFO] [stdout] 118 |                 let file = try!(tokens.next().ok_or(LineError::MissingFile));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:125:22
[INFO] [stdout]     |
[INFO] [stdout] 125 |             vfstype: try!(tokens.next().ok_or(LineError::MissingVfstype)).to_string(),
[INFO] [stdout]     |                      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:126:21
[INFO] [stdout]     |
[INFO] [stdout] 126 |             mntops: try!(tokens.next().ok_or(LineError::MissingMntops))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:130:28
[INFO] [stdout]     |
[INFO] [stdout] 130 |                 let freq = try!(tokens.next().ok_or(LineError::MissingFreq));
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:138:30
[INFO] [stdout]     |
[INFO] [stdout] 138 |                 let passno = try!(tokens.next().ok_or(LineError::MissingPassno));
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:167:30
[INFO] [stdout]     |
[INFO] [stdout] 167 |     get_submounts_from(root, try!(MountIter::new_from_proc()))
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:188:28
[INFO] [stdout]     |
[INFO] [stdout] 188 |     get_mount_from(target, try!(MountIter::new_from_proc()))
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stdout]    --> src/parse.rs:277:20
[INFO] [stdout]     |
[INFO] [stdout] 277 |         let file = try!(File::open(PROC_MOUNTS));
[INFO] [stdout]     |                    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:48:32
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(out, "{}", self.description())
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stdout]   --> src/error.rs:48:32
[INFO] [stdout]    |
[INFO] [stdout] 48 |         write!(out, "{}", self.description())
[INFO] [stdout]    |                                ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 10 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.35s
[INFO] running `Command { std: "docker" "inspect" "b5f5432774fd6c10d571e0103514f058275dcf675f63d22811a6a05c830dcd79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5f5432774fd6c10d571e0103514f058275dcf675f63d22811a6a05c830dcd79", kill_on_drop: false }`
[INFO] [stdout] b5f5432774fd6c10d571e0103514f058275dcf675f63d22811a6a05c830dcd79