[INFO] updating cached repository athorwall/parser-combinators
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/athorwall/parser-combinators
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/athorwall/parser-combinators" "work/ex/beta-1.38-1/sources/1.37.0/gh/athorwall/parser-combinators"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/athorwall/parser-combinators'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/athorwall/parser-combinators" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/athorwall/parser-combinators"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/athorwall/parser-combinators'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] e9dc572158cc0e1493cb8b3c0637a4d8d7013b8b
[INFO] sha for GitHub repo athorwall/parser-combinators: e9dc572158cc0e1493cb8b3c0637a4d8d7013b8b
[INFO] validating manifest of athorwall/parser-combinators 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 athorwall/parser-combinators 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 athorwall/parser-combinators
[INFO] finished frobbing athorwall/parser-combinators
[INFO] frobbed toml for athorwall/parser-combinators written to work/ex/beta-1.38-1/sources/1.37.0/gh/athorwall/parser-combinators/Cargo.toml
[INFO] started frobbing athorwall/parser-combinators
[INFO] finished frobbing athorwall/parser-combinators
[INFO] frobbed toml for athorwall/parser-combinators written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/athorwall/parser-combinators/Cargo.toml
[INFO] crate athorwall/parser-combinators 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing athorwall/parser-combinators 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-3/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/athorwall/parser-combinators:/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] 031e3443b1496e88ffe1a26d3f5309a61c4e38bca2f445b193fad530cd5b243d
[INFO] running `"docker" "start" "-a" "031e3443b1496e88ffe1a26d3f5309a61c4e38bca2f445b193fad530cd5b243d"`
[INFO] [stderr]    Compiling parser-combinators v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     f: Box<Fn(&String) -> Vec<(T, String)> + 'a>,
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String) -> Vec<(T, String)> + 'a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:24:35
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn map<U>(self, func: Box<Fn(&T) -> U>) -> Parser<'a, U> where T: 'a, U: 'a {
[INFO] [stderr]    |                                   ^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T) -> U`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:90:54
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn bind<'b, U, V>(p1: Parser<'b, U>, p2: Box<Fn(U) -> Parser<'b, V>>) -> Parser<'b, V>
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(U) -> Parser<'b, V>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/parser.rs:42:26
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     Some(value) => {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_input`
[INFO] [stderr]   --> src/parser.rs:43:33
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         let mut new_input = input.clone();
[INFO] [stderr]    |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_new_input`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         let mut new_input = input.clone();
[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: struct is never constructed: `Parser`
[INFO] [stderr]  --> src/parser.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Parser<'a, T> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse`
[INFO] [stderr]  --> src/parser.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn parse(&self, input: &String) -> Result<T, String> {
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `map`
[INFO] [stderr]   --> src/parser.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn map<U>(self, func: Box<Fn(&T) -> U>) -> Parser<'a, U> where T: 'a, U: 'a {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `one`
[INFO] [stderr]   --> src/parser.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     pub fn one(t: char) -> Parser<'a, char> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `combine`
[INFO] [stderr]   --> src/parser.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 | /     pub fn combine<'b, U>(p1: Parser<'b, U>, p2: Parser<'b, U>) -> Parser<'b, U>
[INFO] [stderr] 63 | |         where U: Copy + 'b {
[INFO] [stderr] 64 | |         Parser{
[INFO] [stderr] 65 | |             f: Box::from(move |input: &String| {
[INFO] [stderr] ...  |
[INFO] [stderr] 71 | |         }
[INFO] [stderr] 72 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `option`
[INFO] [stderr]   --> src/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 | /     pub fn option<'b, U>(p1: Parser<'b, U>, p2: Parser<'b, U>) -> Parser<'b, U>
[INFO] [stderr] 76 | |         where U: Copy + 'b {
[INFO] [stderr] 77 | |         Parser{
[INFO] [stderr] 78 | |             f: Box::from(move |input: &String| {
[INFO] [stderr] ...  |
[INFO] [stderr] 86 | |         }
[INFO] [stderr] 87 | |     }
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `bind`
[INFO] [stderr]    --> src/parser.rs:90:5
[INFO] [stderr]     |
[INFO] [stderr] 90  | /     pub fn bind<'b, U, V>(p1: Parser<'b, U>, p2: Box<Fn(U) -> Parser<'b, V>>) -> Parser<'b, V>
[INFO] [stderr] 91  | |         where U: Copy + 'b, V: 'b {
[INFO] [stderr] 92  | |         Parser{
[INFO] [stderr] 93  | |             f: Box::from(move |input: &String| {
[INFO] [stderr] ...   |
[INFO] [stderr] 100 | |         }
[INFO] [stderr] 101 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `"docker" "inspect" "031e3443b1496e88ffe1a26d3f5309a61c4e38bca2f445b193fad530cd5b243d"`
[INFO] running `"docker" "rm" "-f" "031e3443b1496e88ffe1a26d3f5309a61c4e38bca2f445b193fad530cd5b243d"`
[INFO] [stdout] 031e3443b1496e88ffe1a26d3f5309a61c4e38bca2f445b193fad530cd5b243d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/athorwall/parser-combinators:/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] 1ce9d6d16ff950c2404ea1249f482ef55866413c7aadc4d392d1da87c6970d86
[INFO] running `"docker" "start" "-a" "1ce9d6d16ff950c2404ea1249f482ef55866413c7aadc4d392d1da87c6970d86"`
[INFO] [stderr]    Compiling parser-combinators v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/parser.rs:4:12
[INFO] [stderr]   |
[INFO] [stderr] 4 |     f: Box<Fn(&String) -> Vec<(T, String)> + 'a>,
[INFO] [stderr]   |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&String) -> Vec<(T, String)> + 'a`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:24:35
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn map<U>(self, func: Box<Fn(&T) -> U>) -> Parser<'a, U> where T: 'a, U: 'a {
[INFO] [stderr]    |                                   ^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T) -> U`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:90:54
[INFO] [stderr]    |
[INFO] [stderr] 90 |     pub fn bind<'b, U, V>(p1: Parser<'b, U>, p2: Box<Fn(U) -> Parser<'b, V>>) -> Parser<'b, V>
[INFO] [stderr]    |                                                      ^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(U) -> Parser<'b, V>`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/parser.rs:42:26
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     Some(value) => {
[INFO] [stderr]    |                          ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `new_input`
[INFO] [stderr]   --> src/parser.rs:43:33
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         let mut new_input = input.clone();
[INFO] [stderr]    |                                 ^^^^^^^^^ help: consider prefixing with an underscore: `_new_input`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/parser.rs:43:29
[INFO] [stderr]    |
[INFO] [stderr] 43 |                         let mut new_input = input.clone();
[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/parser.rs:153:21
[INFO] [stderr]     |
[INFO] [stderr] 153 |                 let mut s = a.to_string();
[INFO] [stderr]     |                     ----^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.73s
[INFO] running `"docker" "inspect" "1ce9d6d16ff950c2404ea1249f482ef55866413c7aadc4d392d1da87c6970d86"`
[INFO] running `"docker" "rm" "-f" "1ce9d6d16ff950c2404ea1249f482ef55866413c7aadc4d392d1da87c6970d86"`
[INFO] [stdout] 1ce9d6d16ff950c2404ea1249f482ef55866413c7aadc4d392d1da87c6970d86
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/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/athorwall/parser-combinators:/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] 4beecfaa25aa2a6c3a0f06f81f6ea9575015e10a4b6f1b7d7384ce14bb2d936a
[INFO] running `"docker" "start" "-a" "4beecfaa25aa2a6c3a0f06f81f6ea9575015e10a4b6f1b7d7384ce14bb2d936a"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/parser_combinators-7505327ecf43a9c7
[INFO] [stdout] 
[INFO] [stdout] running 5 tests
[INFO] [stdout] test parser::tests::test_map ... ok
[INFO] [stdout] test parser::tests::test_combine ... ok
[INFO] [stdout] test parser::tests::test_one ... ok
[INFO] [stdout] test parser::tests::test_bind ... ok
[INFO] [stdout] test parser::tests::test_option ... ok
[INFO] [stderr]    Doc-tests parser-combinators
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 5 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[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
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "4beecfaa25aa2a6c3a0f06f81f6ea9575015e10a4b6f1b7d7384ce14bb2d936a"`
[INFO] running `"docker" "rm" "-f" "4beecfaa25aa2a6c3a0f06f81f6ea9575015e10a4b6f1b7d7384ce14bb2d936a"`
[INFO] [stdout] 4beecfaa25aa2a6c3a0f06f81f6ea9575015e10a4b6f1b7d7384ce14bb2d936a