[INFO] crate agnes 0.3.2 is already in cache
[INFO] extracting crate agnes 0.3.2 into work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/agnes/0.3.2
[INFO] extracting crate agnes 0.3.2 into work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/agnes/0.3.2
[INFO] validating manifest of agnes-0.3.2 on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of agnes-0.3.2 on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing agnes-0.3.2
[INFO] removed 1 missing examples
[INFO] finished frobbing agnes-0.3.2
[INFO] frobbed toml for agnes-0.3.2 written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/reg/agnes/0.3.2/Cargo.toml
[INFO] started frobbing agnes-0.3.2
[INFO] removed 1 missing examples
[INFO] finished frobbing agnes-0.3.2
[INFO] frobbed toml for agnes-0.3.2 written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/agnes/0.3.2/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking agnes-0.3.2 against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-4/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/reg/agnes/0.3.2:/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=forbid" "-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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 49f485fe81aa067b64ca3f6d0226b480d099c8c4a798be50e3a8725cc8461499
[INFO] running `"docker" "start" "-a" "49f485fe81aa067b64ca3f6d0226b480d099c8c4a798be50e3a8725cc8461499"`
[INFO] [stderr]    Compiling compiletest_rs v0.3.22
[INFO] [stderr]     Checking indexmap v0.4.1
[INFO] [stderr]     Checking memchr v2.2.1
[INFO] [stderr]     Checking tester v0.5.0
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking native-tls v0.2.3
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking rustfix v0.4.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking bstr v0.2.7
[INFO] [stderr]     Checking aho-corasick v0.7.6
[INFO] [stderr]     Checking regex v0.2.11
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking regex v1.2.1
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking csv-sniffer v0.1.1
[INFO] [stderr]     Checking hyper v0.12.33
[INFO] [stderr]     Checking hyper-tls v0.3.2
[INFO] [stderr]     Checking agnes v0.3.2 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/source/file.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut core = Core::new()?;
[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/source/file.rs:173:21
[INFO] [stderr]     |
[INFO] [stderr] 173 |                 let mut core = Core::new()?;
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/source/file.rs:158:21
[INFO] [stderr]     |
[INFO] [stderr] 158 |                 let mut core = Core::new()?;
[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/source/file.rs:173:21
[INFO] [stderr]     |
[INFO] [stderr] 173 |                 let mut core = Core::new()?;
[INFO] [stderr]     |                     ----^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 47.62s
[INFO] running `"docker" "inspect" "49f485fe81aa067b64ca3f6d0226b480d099c8c4a798be50e3a8725cc8461499"`
[INFO] running `"docker" "rm" "-f" "49f485fe81aa067b64ca3f6d0226b480d099c8c4a798be50e3a8725cc8461499"`
[INFO] [stdout] 49f485fe81aa067b64ca3f6d0226b480d099c8c4a798be50e3a8725cc8461499