[INFO] updating cached repository htrefil/fractars
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/htrefil/fractars
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/htrefil/fractars" "work/ex/beta-1.38-1/sources/1.37.0/gh/htrefil/fractars"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/htrefil/fractars'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/htrefil/fractars" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/htrefil/fractars"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/htrefil/fractars'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5414928487441f389bad3cf46c7c9a80f7afc0df
[INFO] sha for GitHub repo htrefil/fractars: 5414928487441f389bad3cf46c7c9a80f7afc0df
[INFO] validating manifest of htrefil/fractars 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 htrefil/fractars 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 htrefil/fractars
[INFO] finished frobbing htrefil/fractars
[INFO] frobbed toml for htrefil/fractars written to work/ex/beta-1.38-1/sources/1.37.0/gh/htrefil/fractars/Cargo.toml
[INFO] started frobbing htrefil/fractars
[INFO] finished frobbing htrefil/fractars
[INFO] frobbed toml for htrefil/fractars written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/htrefil/fractars/Cargo.toml
[INFO] crate htrefil/fractars 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/htrefil/fractars/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 htrefil/fractars 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-2/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/htrefil/fractars:/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] d68a6cd1e432070ac6cfb1a1d281537a327dad4fd3028643ec75cc20c2048a59
[INFO] running `"docker" "start" "-a" "d68a6cd1e432070ac6cfb1a1d281537a327dad4fd3028643ec75cc20c2048a59"`
[INFO] [stderr]    Compiling fractars v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parse/expr.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::lex::{Position, Token, TokenKind, TokenList};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ParseErrorKind`
[INFO] [stderr]  --> src/parse/statement.rs:2:39
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::error::{Error, ParseError, ParseErrorKind};
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parse/statement.rs:5:29
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::lex::{TokenList, Token, TokenKind, Position};
[INFO] [stderr]   |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]   --> src/parse/mod.rs:12:29
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::lex::{TokenList, Token, TokenKind, Position};
[INFO] [stderr]    |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/render/error.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse::Statement`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::parse::Statement;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pow`
[INFO] [stderr]   --> src/lex/token.rs:35:2
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Pow,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lex/mod.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new() -> TokenList {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/lex/mod.rs:75:2
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn add(&mut self, token: Token) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Syntax`
[INFO] [stderr]  --> src/parse/error.rs:7:2
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Syntax,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnexpectedEof`
[INFO] [stderr]  --> src/parse/error.rs:9:2
[INFO] [stderr]   |
[INFO] [stderr] 9 |     UnexpectedEof,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DuplicatedName`
[INFO] [stderr]   --> src/parse/error.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     DuplicatedName,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DivByZero`
[INFO] [stderr]   --> src/parse/error.rs:52:2
[INFO] [stderr]    |
[INFO] [stderr] 52 |     DivByZero,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidFuncCall`
[INFO] [stderr]   --> src/parse/error.rs:55:2
[INFO] [stderr]    |
[INFO] [stderr] 55 |     InvalidFuncCall,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse`
[INFO] [stderr]   --> src/parse/statement.rs:35:2
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn parse(token_list: &mut TokenList) -> Result<Vec<Statement>, ParseError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_str`
[INFO] [stderr]   --> src/parse/statement.rs:56:2
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn parse_str(data: &str) -> Result<Vec<Statement>, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `func`
[INFO] [stderr]   --> src/parse/mod.rs:72:2
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn func(&mut self, name: &str, f: UserFunc) -> &mut Context {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.17s
[INFO] running `"docker" "inspect" "d68a6cd1e432070ac6cfb1a1d281537a327dad4fd3028643ec75cc20c2048a59"`
[INFO] running `"docker" "rm" "-f" "d68a6cd1e432070ac6cfb1a1d281537a327dad4fd3028643ec75cc20c2048a59"`
[INFO] [stdout] d68a6cd1e432070ac6cfb1a1d281537a327dad4fd3028643ec75cc20c2048a59
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/htrefil/fractars:/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] c8fb08b5daeb6eda7c37ef6f56966ffba7dd50ad8622915f1a01a3c5418eaa73
[INFO] running `"docker" "start" "-a" "c8fb08b5daeb6eda7c37ef6f56966ffba7dd50ad8622915f1a01a3c5418eaa73"`
[INFO] [stderr]    Compiling fractars v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parse/expr.rs:4:28
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::lex::{Position, Token, TokenKind, TokenList};
[INFO] [stderr]   |                            ^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ParseErrorKind`
[INFO] [stderr]  --> src/parse/statement.rs:2:39
[INFO] [stderr]   |
[INFO] [stderr] 2 | use super::error::{Error, ParseError, ParseErrorKind};
[INFO] [stderr]   |                                       ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]  --> src/parse/statement.rs:5:29
[INFO] [stderr]   |
[INFO] [stderr] 5 | use crate::lex::{TokenList, Token, TokenKind, Position};
[INFO] [stderr]   |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Token`
[INFO] [stderr]   --> src/parse/mod.rs:12:29
[INFO] [stderr]    |
[INFO] [stderr] 12 | use crate::lex::{TokenList, Token, TokenKind, Position};
[INFO] [stderr]    |                             ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/render/error.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::parse::Statement`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use crate::parse::Statement;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Pow`
[INFO] [stderr]   --> src/lex/token.rs:35:2
[INFO] [stderr]    |
[INFO] [stderr] 35 |     Pow,
[INFO] [stderr]    |     ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/lex/mod.rs:68:2
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn new() -> TokenList {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]   --> src/lex/mod.rs:75:2
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn add(&mut self, token: Token) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Syntax`
[INFO] [stderr]  --> src/parse/error.rs:7:2
[INFO] [stderr]   |
[INFO] [stderr] 7 |     Syntax,
[INFO] [stderr]   |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `UnexpectedEof`
[INFO] [stderr]  --> src/parse/error.rs:9:2
[INFO] [stderr]   |
[INFO] [stderr] 9 |     UnexpectedEof,
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DuplicatedName`
[INFO] [stderr]   --> src/parse/error.rs:10:2
[INFO] [stderr]    |
[INFO] [stderr] 10 |     DuplicatedName,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `DivByZero`
[INFO] [stderr]   --> src/parse/error.rs:52:2
[INFO] [stderr]    |
[INFO] [stderr] 52 |     DivByZero,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `InvalidFuncCall`
[INFO] [stderr]   --> src/parse/error.rs:55:2
[INFO] [stderr]    |
[INFO] [stderr] 55 |     InvalidFuncCall,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse`
[INFO] [stderr]   --> src/parse/statement.rs:35:2
[INFO] [stderr]    |
[INFO] [stderr] 35 |     pub fn parse(token_list: &mut TokenList) -> Result<Vec<Statement>, ParseError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_str`
[INFO] [stderr]   --> src/parse/statement.rs:56:2
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn parse_str(data: &str) -> Result<Vec<Statement>, Error> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `func`
[INFO] [stderr]   --> src/parse/mod.rs:72:2
[INFO] [stderr]    |
[INFO] [stderr] 72 |     pub fn func(&mut self, name: &str, f: UserFunc) -> &mut Context {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `"docker" "inspect" "c8fb08b5daeb6eda7c37ef6f56966ffba7dd50ad8622915f1a01a3c5418eaa73"`
[INFO] running `"docker" "rm" "-f" "c8fb08b5daeb6eda7c37ef6f56966ffba7dd50ad8622915f1a01a3c5418eaa73"`
[INFO] [stdout] c8fb08b5daeb6eda7c37ef6f56966ffba7dd50ad8622915f1a01a3c5418eaa73
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/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/htrefil/fractars:/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] d08b8a8e727f1939d831069d170032ce87df4ee9d0859bf51b56990708adadc3
[INFO] running `"docker" "start" "-a" "d08b8a8e727f1939d831069d170032ce87df4ee9d0859bf51b56990708adadc3"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/fractars-41c4c539f8f5f329
[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" "d08b8a8e727f1939d831069d170032ce87df4ee9d0859bf51b56990708adadc3"`
[INFO] running `"docker" "rm" "-f" "d08b8a8e727f1939d831069d170032ce87df4ee9d0859bf51b56990708adadc3"`
[INFO] [stdout] d08b8a8e727f1939d831069d170032ce87df4ee9d0859bf51b56990708adadc3