[INFO] updating cached repository stan4cb/rust-tools [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/stan4cb/rust-tools [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/stan4cb/rust-tools" "work/ex/beta-1.37-6/sources/1.36.0/gh/stan4cb/rust-tools"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/stan4cb/rust-tools'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/stan4cb/rust-tools" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] f948c2b732deccdd5f1eef663df285f7df525315 [INFO] sha for GitHub repo stan4cb/rust-tools: f948c2b732deccdd5f1eef663df285f7df525315 [INFO] validating manifest of stan4cb/rust-tools on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of stan4cb/rust-tools on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing stan4cb/rust-tools [INFO] finished frobbing stan4cb/rust-tools [INFO] frobbed toml for stan4cb/rust-tools written to work/ex/beta-1.37-6/sources/1.36.0/gh/stan4cb/rust-tools/Cargo.toml [INFO] started frobbing stan4cb/rust-tools [INFO] finished frobbing stan4cb/rust-tools [INFO] frobbed toml for stan4cb/rust-tools written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools/Cargo.toml [INFO] crate stan4cb/rust-tools already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing stan4cb/rust-tools against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools:/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-2019-07-23" "build" "--frozen"` [INFO] [stdout] fb6453b7dda51e2149a4d7e73e9ffeb83e94da9224627033626e1f969c36cd40 [INFO] running `"docker" "start" "-a" "fb6453b7dda51e2149a4d7e73e9ffeb83e94da9224627033626e1f969c36cd40"` [INFO] [stderr] Compiling rust-tools v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/main.rs:2:21 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/tools.rs:3:15 [INFO] [stderr] | [INFO] [stderr] 3 | use std::io::{Read, Write}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/main.rs:135:24 [INFO] [stderr] | [INFO] [stderr] 135 | Ok(res) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_res` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | file.read_exact(&mut x); [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] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:138:25 [INFO] [stderr] | [INFO] [stderr] 138 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:141:25 [INFO] [stderr] | [INFO] [stderr] 141 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:144:25 [INFO] [stderr] | [INFO] [stderr] 144 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [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 1.27s [INFO] running `"docker" "inspect" "fb6453b7dda51e2149a4d7e73e9ffeb83e94da9224627033626e1f969c36cd40"` [INFO] running `"docker" "rm" "-f" "fb6453b7dda51e2149a4d7e73e9ffeb83e94da9224627033626e1f969c36cd40"` [INFO] [stdout] fb6453b7dda51e2149a4d7e73e9ffeb83e94da9224627033626e1f969c36cd40 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools:/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-2019-07-23" "test" "--frozen" "--no-run"` [INFO] [stdout] 7be5a8a79850e93f1cbcca8d14b2f8d984c0272458317a79bb7a0cab34848b02 [INFO] running `"docker" "start" "-a" "7be5a8a79850e93f1cbcca8d14b2f8d984c0272458317a79bb7a0cab34848b02"` [INFO] [stderr] Compiling rust-tools v0.1.0 (/opt/crater/workdir) [INFO] [stderr] warning: unused import: `Write` [INFO] [stderr] --> src/main.rs:2:21 [INFO] [stderr] | [INFO] [stderr] 2 | use std::io::{Read, Write, Seek, SeekFrom}; [INFO] [stderr] | ^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_imports)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `Read` [INFO] [stderr] --> src/tools.rs:3:15 [INFO] [stderr] | [INFO] [stderr] 3 | use std::io::{Read, Write}; [INFO] [stderr] | ^^^^ [INFO] [stderr] [INFO] [stderr] warning: unused variable: `res` [INFO] [stderr] --> src/main.rs:135:24 [INFO] [stderr] | [INFO] [stderr] 135 | Ok(res) => { [INFO] [stderr] | ^^^ help: consider prefixing with an underscore: `_res` [INFO] [stderr] | [INFO] [stderr] = note: #[warn(unused_variables)] on by default [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:131:17 [INFO] [stderr] | [INFO] [stderr] 131 | file.read_exact(&mut x); [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] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:138:25 [INFO] [stderr] | [INFO] [stderr] 138 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:141:25 [INFO] [stderr] | [INFO] [stderr] 141 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stderr] [INFO] [stderr] warning: unused `std::result::Result` that must be used [INFO] [stderr] --> src/main.rs:144:25 [INFO] [stderr] | [INFO] [stderr] 144 | file.read_exact(&mut a); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] | [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 0.74s [INFO] running `"docker" "inspect" "7be5a8a79850e93f1cbcca8d14b2f8d984c0272458317a79bb7a0cab34848b02"` [INFO] running `"docker" "rm" "-f" "7be5a8a79850e93f1cbcca8d14b2f8d984c0272458317a79bb7a0cab34848b02"` [INFO] [stdout] 7be5a8a79850e93f1cbcca8d14b2f8d984c0272458317a79bb7a0cab34848b02 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/stan4cb/rust-tools:/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-2019-07-23" "test" "--frozen"` [INFO] [stdout] e94d93e54dd0a7813e444fe2daabee6b2b52b540c3efdbe9e847f7454241a738 [INFO] running `"docker" "start" "-a" "e94d93e54dd0a7813e444fe2daabee6b2b52b540c3efdbe9e847f7454241a738"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running /opt/crater/target/debug/deps/rust_tools-2128650f9a8d27a1 [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" "e94d93e54dd0a7813e444fe2daabee6b2b52b540c3efdbe9e847f7454241a738"` [INFO] running `"docker" "rm" "-f" "e94d93e54dd0a7813e444fe2daabee6b2b52b540c3efdbe9e847f7454241a738"` [INFO] [stdout] e94d93e54dd0a7813e444fe2daabee6b2b52b540c3efdbe9e847f7454241a738