[INFO] updating cached repository PhilipDaniels/stock_prices
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PhilipDaniels/stock_prices
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/stock_prices" "work/ex/beta-1.38-1/sources/1.37.0/gh/PhilipDaniels/stock_prices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/PhilipDaniels/stock_prices'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PhilipDaniels/stock_prices" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PhilipDaniels/stock_prices"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PhilipDaniels/stock_prices'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 42daec8e786fc47f0b705361ff7c198f9c47b261
[INFO] sha for GitHub repo PhilipDaniels/stock_prices: 42daec8e786fc47f0b705361ff7c198f9c47b261
[INFO] validating manifest of PhilipDaniels/stock_prices 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 PhilipDaniels/stock_prices 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 PhilipDaniels/stock_prices
[INFO] finished frobbing PhilipDaniels/stock_prices
[INFO] frobbed toml for PhilipDaniels/stock_prices written to work/ex/beta-1.38-1/sources/1.37.0/gh/PhilipDaniels/stock_prices/Cargo.toml
[INFO] started frobbing PhilipDaniels/stock_prices
[INFO] finished frobbing PhilipDaniels/stock_prices
[INFO] frobbed toml for PhilipDaniels/stock_prices written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/PhilipDaniels/stock_prices/Cargo.toml
[INFO] crate PhilipDaniels/stock_prices 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing PhilipDaniels/stock_prices 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-6/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/PhilipDaniels/stock_prices:/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] 8893f2d4784082c5c6c4f902cac42f5a53e5eb119e48120e362218a4b6ea0e9c
[INFO] running `"docker" "start" "-a" "8893f2d4784082c5c6c4f902cac42f5a53e5eb119e48120e362218a4b6ea0e9c"`
[INFO] [stderr]    Compiling encoding_rs v0.7.2
[INFO] [stderr]    Compiling memchr v2.0.1
[INFO] [stderr]    Compiling bytes v0.4.9
[INFO] [stderr]    Compiling serde_urlencoded v0.5.2
[INFO] [stderr]    Compiling libflate v0.1.16
[INFO] [stderr]    Compiling phf_generator v0.7.22
[INFO] [stderr]    Compiling structopt-derive v0.2.10
[INFO] [stderr]    Compiling chrono v0.4.5
[INFO] [stderr]    Compiling csv-core v0.1.4
[INFO] [stderr]    Compiling phf_codegen v0.7.22
[INFO] [stderr]    Compiling csv v1.0.0
[INFO] [stderr]    Compiling mime_guess v2.0.0-alpha.6
[INFO] [stderr]    Compiling tokio-io v0.1.7
[INFO] [stderr]    Compiling structopt v0.2.10
[INFO] [stderr]    Compiling tokio-codec v0.1.0
[INFO] [stderr]    Compiling tokio-reactor v0.1.2
[INFO] [stderr]    Compiling tokio-fs v0.1.2
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.1
[INFO] [stderr]    Compiling tokio v0.1.7
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling tokio-tls v0.1.4
[INFO] [stderr]    Compiling hyper v0.11.27
[INFO] [stderr]    Compiling hyper-tls v0.1.3
[INFO] [stderr]    Compiling reqwest v0.8.6
[INFO] [stderr]    Compiling stock_prices v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use] extern crate structopt;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:121:32
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prices`
[INFO] [stderr]    --> src/main.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let mut prices: Vec<Price> = read_csv(&file, args.print).expect("Could not read price.csv");
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_prices`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]    --> src/main.rs:123:54
[INFO] [stderr]     |
[INFO] [stderr] 123 |             StockPriceError::CannotParseDocument(ref msg) => None,
[INFO] [stderr]     |                                                      ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let mut prices: Vec<Price> = read_csv(&file, args.print).expect("Could not read price.csv");
[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: function is never used: `serialize`
[INFO] [stderr]    --> src/main.rs:465:5
[INFO] [stderr]     |
[INFO] [stderr] 465 | /     pub fn serialize<S>(date: &Date<Utc>, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stderr] 466 | |         where S: Serializer,
[INFO] [stderr] 467 | |     {
[INFO] [stderr] 468 | |         let s = format!("{}", date.format(FORMAT));
[INFO] [stderr] 469 | |         serializer.serialize_str(&s)
[INFO] [stderr] 470 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:232:13
[INFO] [stderr]     |
[INFO] [stderr] 232 |             writeln!(file, "{}", error);
[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]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 55.00s
[INFO] running `"docker" "inspect" "8893f2d4784082c5c6c4f902cac42f5a53e5eb119e48120e362218a4b6ea0e9c"`
[INFO] running `"docker" "rm" "-f" "8893f2d4784082c5c6c4f902cac42f5a53e5eb119e48120e362218a4b6ea0e9c"`
[INFO] [stdout] 8893f2d4784082c5c6c4f902cac42f5a53e5eb119e48120e362218a4b6ea0e9c
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/PhilipDaniels/stock_prices:/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] aa2a7139554a87873077b5d896f22ea56c3444fd4e5c3c3592cd6017358116ae
[INFO] running `"docker" "start" "-a" "aa2a7139554a87873077b5d896f22ea56c3444fd4e5c3c3592cd6017358116ae"`
[INFO] [stderr]    Compiling stock_prices v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | #[macro_use] extern crate structopt;
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:121:32
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]    --> src/main.rs:492:9
[INFO] [stderr]     |
[INFO] [stderr] 492 |     use std::error::Error;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `StockPriceError`
[INFO] [stderr]    --> src/main.rs:493:9
[INFO] [stderr]     |
[INFO] [stderr] 493 |     use StockPriceError;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prices`
[INFO] [stderr]    --> src/main.rs:213:13
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let mut prices: Vec<Price> = read_csv(&file, args.print).expect("Could not read price.csv");
[INFO] [stderr]     |             ^^^^^^ help: consider prefixing with an underscore: `_prices`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `msg`
[INFO] [stderr]    --> src/main.rs:123:54
[INFO] [stderr]     |
[INFO] [stderr] 123 |             StockPriceError::CannotParseDocument(ref msg) => None,
[INFO] [stderr]     |                                                      ^^^ help: consider prefixing with an underscore: `_msg`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:213:9
[INFO] [stderr]     |
[INFO] [stderr] 213 |     let mut prices: Vec<Price> = read_csv(&file, args.print).expect("Could not read price.csv");
[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: function is never used: `serialize`
[INFO] [stderr]    --> src/main.rs:465:5
[INFO] [stderr]     |
[INFO] [stderr] 465 | /     pub fn serialize<S>(date: &Date<Utc>, serializer: S) -> Result<S::Ok, S::Error>
[INFO] [stderr] 466 | |         where S: Serializer,
[INFO] [stderr] 467 | |     {
[INFO] [stderr] 468 | |         let s = format!("{}", date.format(FORMAT));
[INFO] [stderr] 469 | |         serializer.serialize_str(&s)
[INFO] [stderr] 470 | |     }
[INFO] [stderr]     | |_____^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:232:13
[INFO] [stderr]     |
[INFO] [stderr] 232 |             writeln!(file, "{}", error);
[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]     = note: this warning originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.06s
[INFO] running `"docker" "inspect" "aa2a7139554a87873077b5d896f22ea56c3444fd4e5c3c3592cd6017358116ae"`
[INFO] running `"docker" "rm" "-f" "aa2a7139554a87873077b5d896f22ea56c3444fd4e5c3c3592cd6017358116ae"`
[INFO] [stdout] aa2a7139554a87873077b5d896f22ea56c3444fd4e5c3c3592cd6017358116ae
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-6/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/PhilipDaniels/stock_prices:/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] ce972e98c41a633f244d527a33d354bb2bac883fbf27a546dffff468a4dc1c0c
[INFO] running `"docker" "start" "-a" "ce972e98c41a633f244d527a33d354bb2bac883fbf27a546dffff468a4dc1c0c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/stock_prices-be4d9b43154e594a
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test tests::chomp_when_pattern_does_not_exist_returns_error ... ok
[INFO] [stdout] test tests::chomp_when_pattern_exists_returns_following_text ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ce972e98c41a633f244d527a33d354bb2bac883fbf27a546dffff468a4dc1c0c"`
[INFO] running `"docker" "rm" "-f" "ce972e98c41a633f244d527a33d354bb2bac883fbf27a546dffff468a4dc1c0c"`
[INFO] [stdout] ce972e98c41a633f244d527a33d354bb2bac883fbf27a546dffff468a4dc1c0c