[INFO] fetching crate varmint 0.1.3...
[INFO] testing varmint-0.1.3 against try#eafdee2dfae8c2233b74f98b123308be7ccefcc6 for pr-79296
[INFO] extracting crate varmint 0.1.3 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate varmint 0.1.3 on toolchain eafdee2dfae8c2233b74f98b123308be7ccefcc6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate varmint 0.1.3
[INFO] finished tweaking crates.io crate varmint 0.1.3
[INFO] tweaked toml for crates.io crate varmint 0.1.3 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 930167ce76039c201ad147e5141027e01cc9d68810b510eca7cadff2e9f3da81
[INFO] running `Command { std: "docker" "start" "-a" "930167ce76039c201ad147e5141027e01cc9d68810b510eca7cadff2e9f3da81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "930167ce76039c201ad147e5141027e01cc9d68810b510eca7cadff2e9f3da81", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "930167ce76039c201ad147e5141027e01cc9d68810b510eca7cadff2e9f3da81", kill_on_drop: false }`
[INFO] [stdout] 930167ce76039c201ad147e5141027e01cc9d68810b510eca7cadff2e9f3da81
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 4d51796a7910474d2821f77e236eef08bba8086ef30f707c0b050fcf0491e524
[INFO] running `Command { std: "docker" "start" "-a" "4d51796a7910474d2821f77e236eef08bba8086ef30f707c0b050fcf0491e524", kill_on_drop: false }`
[INFO] [stderr]    Compiling varmint v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |         try!(self.read_exact(&mut buffer));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |         if try!(self.read(&mut buffer)) == 1 {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:144:27
[INFO] [stdout]     |
[INFO] [stdout] 144 |             let current = try!(self.read_u8());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:151:28
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 let last = try!(self.read_u8());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:166:21
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let first = try!(self.read_u8());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:171:30
[INFO] [stdout]     |
[INFO] [stdout] 171 |         if let Some(first) = try!(self.try_read_u8()) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |             Ok(Some(try!(self.read_remaining_u64_varint(first))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 try!(self.write_u8(current));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 try!(self.write_u8(current | 0x80));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "4d51796a7910474d2821f77e236eef08bba8086ef30f707c0b050fcf0491e524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d51796a7910474d2821f77e236eef08bba8086ef30f707c0b050fcf0491e524", kill_on_drop: false }`
[INFO] [stdout] 4d51796a7910474d2821f77e236eef08bba8086ef30f707c0b050fcf0491e524
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e29e1ac5f9460da4b7d5af6a37fc184de5637d1fe69881669fc23005c6a1ab0e
[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" "e29e1ac5f9460da4b7d5af6a37fc184de5637d1fe69881669fc23005c6a1ab0e", kill_on_drop: false }`
[INFO] [stderr]    Compiling varmint v0.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |         try!(self.read_exact(&mut buffer));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |         if try!(self.read(&mut buffer)) == 1 {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:144:27
[INFO] [stdout]     |
[INFO] [stdout] 144 |             let current = try!(self.read_u8());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:151:28
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 let last = try!(self.read_u8());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:166:21
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let first = try!(self.read_u8());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:171:30
[INFO] [stdout]     |
[INFO] [stdout] 171 |         if let Some(first) = try!(self.try_read_u8()) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |             Ok(Some(try!(self.read_remaining_u64_varint(first))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 try!(self.write_u8(current));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 try!(self.write_u8(current | 0x80));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:122:9
[INFO] [stdout]     |
[INFO] [stdout] 122 |         try!(self.read_exact(&mut buffer));
[INFO] [stdout]     |         ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:128:12
[INFO] [stdout]     |
[INFO] [stdout] 128 |         if try!(self.read(&mut buffer)) == 1 {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:144:27
[INFO] [stdout]     |
[INFO] [stdout] 144 |             let current = try!(self.read_u8());
[INFO] [stdout]     |                           ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:151:28
[INFO] [stdout]     |
[INFO] [stdout] 151 |                 let last = try!(self.read_u8());
[INFO] [stdout]     |                            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:166:21
[INFO] [stdout]     |
[INFO] [stdout] 166 |         let first = try!(self.read_u8());
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:171:30
[INFO] [stdout]     |
[INFO] [stdout] 171 |         if let Some(first) = try!(self.try_read_u8()) {
[INFO] [stdout]     |                              ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/read.rs:172:21
[INFO] [stdout]     |
[INFO] [stdout] 172 |             Ok(Some(try!(self.read_remaining_u64_varint(first))))
[INFO] [stdout]     |                     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:57:17
[INFO] [stdout]    |
[INFO] [stdout] 57 |                 try!(self.write_u8(current));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/write.rs:60:17
[INFO] [stdout]    |
[INFO] [stdout] 60 |                 try!(self.write_u8(current | 0x80));
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "e29e1ac5f9460da4b7d5af6a37fc184de5637d1fe69881669fc23005c6a1ab0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e29e1ac5f9460da4b7d5af6a37fc184de5637d1fe69881669fc23005c6a1ab0e", kill_on_drop: false }`
[INFO] [stdout] e29e1ac5f9460da4b7d5af6a37fc184de5637d1fe69881669fc23005c6a1ab0e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+eafdee2dfae8c2233b74f98b123308be7ccefcc6" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 0526b9e518ff8a76527b02925e3e679ee9839a07ac55945c178cdb90992a6682
[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" "0526b9e518ff8a76527b02925e3e679ee9839a07ac55945c178cdb90992a6682", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout] running 23 tests
[INFO] [stderr]    --> src/read.rs:122:9
[INFO] [stdout] test len::tests::half ... ok
[INFO] [stderr]     |
[INFO] [stderr] 122 |         try!(self.read_exact(&mut buffer));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:128:12
[INFO] [stderr]     |
[INFO] [stderr] 128 |         if try!(self.read(&mut buffer)) == 1 {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:144:27
[INFO] [stderr]     |
[INFO] [stderr] 144 |             let current = try!(self.read_u8());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:151:28
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 let last = try!(self.read_u8());
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:166:21
[INFO] [stderr]     |
[INFO] [stderr] 166 |         let first = try!(self.read_u8());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:171:30
[INFO] [stderr]     |
[INFO] [stderr] 171 |         if let Some(first) = try!(self.try_read_u8()) {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:172:21
[INFO] [stderr]     |
[INFO] [stderr] 172 |             Ok(Some(try!(self.read_remaining_u64_varint(first))))
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 try!(self.write_u8(current));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 try!(self.write_u8(current | 0x80));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:122:9
[INFO] [stderr]     |
[INFO] [stderr] 122 |         try!(self.read_exact(&mut buffer));
[INFO] [stderr]     |         ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:128:12
[INFO] [stderr]     |
[INFO] [stderr] 128 |         if try!(self.read(&mut buffer)) == 1 {
[INFO] [stderr]     |            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:144:27
[INFO] [stderr]     |
[INFO] [stderr] 144 |             let current = try!(self.read_u8());
[INFO] [stderr]     |                           ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:151:28
[INFO] [stderr]     |
[INFO] [stderr] 151 |                 let last = try!(self.read_u8());
[INFO] [stderr]     |                            ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:166:21
[INFO] [stderr]     |
[INFO] [stderr] 166 |         let first = try!(self.read_u8());
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:171:30
[INFO] [stderr]     |
[INFO] [stderr] 171 |         if let Some(first) = try!(self.try_read_u8()) {
[INFO] [stderr]     |                              ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/read.rs:172:21
[INFO] [stderr]     |
[INFO] [stderr] 172 |             Ok(Some(try!(self.read_remaining_u64_varint(first))))
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:57:17
[INFO] [stderr]    |
[INFO] [stderr] 57 |                 try!(self.write_u8(current));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]   --> src/write.rs:60:17
[INFO] [stderr]    |
[INFO] [stderr] 60 |                 try!(self.write_u8(current | 0x80));
[INFO] [stderr]    |                 ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/varmint-f1a47d98cab4f7b7
[INFO] [stdout] test len::tests::some ... ok
[INFO] [stdout] test read::tests::one ... ok
[INFO] [stdout] test read::tests::some ... ok
[INFO] [stdout] test read::tests::many ... ok
[INFO] [stdout] test len::tests::one_byte_threshold_above ... ok
[INFO] [stdout] test read::tests::try_none ... ok
[INFO] [stdout] test write::tests::half ... ok
[INFO] [stdout] test read::tests::half ... ok
[INFO] [stdout] test read::tests::try_some ... ok
[INFO] [stdout] test read::tests::zero ... ok
[INFO] [stdout] test len::tests::many ... ok
[INFO] [stdout] test len::tests::one ... ok
[INFO] [stdout] test len::tests::zero ... ok
[INFO] [stdout] test len::tests::all ... ok
[INFO] [stdout] test len::tests::one_byte_threshold_below ... ok
[INFO] [stdout] test read::tests::all ... ok
[INFO] [stdout] test read::tests::too_many ... ok
[INFO] [stdout] test write::tests::all ... ok
[INFO] [stdout] test write::tests::zero ... ok
[INFO] [stdout] test write::tests::one ... ok
[INFO] [stdout] test write::tests::some ... ok
[INFO] [stdout] test write::tests::many ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 23 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests varmint
[INFO] [stdout] 
[INFO] [stdout] running 8 tests
[INFO] [stdout] test src/read.rs - read::ReadVarInt::read_usize_varint (line 47) ... ok
[INFO] [stdout] test src/read.rs - read::ReadVarInt::read_u64_varint (line 26) ... ok
[INFO] [stdout] test src/read.rs - read::ReadVarInt::try_read_u64_varint (line 73) ... ok
[INFO] [stdout] test src/write.rs - write::WriteVarInt::write_u64_varint (line 19) ... ok
[INFO] [stdout] test src/write.rs - write::WriteVarInt::write_usize_varint (line 36) ... ok
[INFO] [stdout] test src/read.rs - read::ReadVarInt::try_read_usize_varint (line 105) ... ok
[INFO] [stdout] test src/read.rs - read::ReadVarInt::try_read_u64_varint (line 79) ... ok
[INFO] [stdout] test src/read.rs - read::ReadVarInt::try_read_usize_varint (line 111) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 8 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "0526b9e518ff8a76527b02925e3e679ee9839a07ac55945c178cdb90992a6682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0526b9e518ff8a76527b02925e3e679ee9839a07ac55945c178cdb90992a6682", kill_on_drop: false }`
[INFO] [stdout] 0526b9e518ff8a76527b02925e3e679ee9839a07ac55945c178cdb90992a6682