[INFO] fetching crate mandrill_sender 0.1.0...
[INFO] extracting crate mandrill_sender 0.1.0 into work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mandrill_sender/0.1.0
[INFO] extracting crate mandrill_sender 0.1.0 into work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mandrill_sender/0.1.0
[INFO] validating manifest of mandrill_sender-0.1.0 on toolchain master#c8865d8e195813ade6b84434ac9f8850e7112d1a
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of mandrill_sender-0.1.0 on toolchain try#e212b7d492c96d3837691ba29d32d5f468933fb8
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing mandrill_sender-0.1.0
[INFO] finished frobbing mandrill_sender-0.1.0
[INFO] frobbed toml for mandrill_sender-0.1.0 written to work/ex/pr-61629/sources/master#c8865d8e195813ade6b84434ac9f8850e7112d1a/reg/mandrill_sender/0.1.0/Cargo.toml
[INFO] started frobbing mandrill_sender-0.1.0
[INFO] finished frobbing mandrill_sender-0.1.0
[INFO] frobbed toml for mandrill_sender-0.1.0 written to work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mandrill_sender/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c8865d8e195813ade6b84434ac9f8850e7112d1a-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded reqwest v0.1.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing mandrill_sender-0.1.0 against try#e212b7d492c96d3837691ba29d32d5f468933fb8 for pr-61629
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mandrill_sender/0.1.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "build" "--frozen"`
[INFO] [stdout] e7d08e741de29d6e3089f5caa0e5d609081d37721c96d6cbefb9a6815095eaaf
[INFO] running `"docker" "start" "-a" "e7d08e741de29d6e3089f5caa0e5d609081d37721c96d6cbefb9a6815095eaaf"`
[INFO] [stderr]    Compiling serde_urlencoded v0.3.0
[INFO] [stderr]    Compiling reqwest v0.1.0
[INFO] [stderr]    Compiling mandrill_sender v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/email.rs:93:15
[INFO] [stderr]    |
[INFO] [stderr] 93 |           let mut response_body = &mut "".to_owned();
[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/email.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |           let mut response_body = &mut "".to_owned();
[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/email.rs:186:15
[INFO] [stderr]     |
[INFO] [stderr] 186 |           let mut response_body = &mut "".to_owned();
[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/email.rs:241:15
[INFO] [stderr]     |
[INFO] [stderr] 241 |           let mut response_body = &mut "".to_owned();
[INFO] [stderr]     |               ----^^^^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.21s
[INFO] running `"docker" "inspect" "e7d08e741de29d6e3089f5caa0e5d609081d37721c96d6cbefb9a6815095eaaf"`
[INFO] running `"docker" "rm" "-f" "e7d08e741de29d6e3089f5caa0e5d609081d37721c96d6cbefb9a6815095eaaf"`
[INFO] [stdout] e7d08e741de29d6e3089f5caa0e5d609081d37721c96d6cbefb9a6815095eaaf
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mandrill_sender/0.1.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] f5eb53f3d6255bd281588c90fe5d5adccba1fca6eb4f7b559ff168d70ae2bc1f
[INFO] running `"docker" "start" "-a" "f5eb53f3d6255bd281588c90fe5d5adccba1fca6eb4f7b559ff168d70ae2bc1f"`
[INFO] [stderr]    Compiling mandrill_sender v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/email.rs:93:15
[INFO] [stderr]    |
[INFO] [stderr] 93 |           let mut response_body = &mut "".to_owned();
[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/email.rs:148:15
[INFO] [stderr]     |
[INFO] [stderr] 148 |           let mut response_body = &mut "".to_owned();
[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/email.rs:186:15
[INFO] [stderr]     |
[INFO] [stderr] 186 |           let mut response_body = &mut "".to_owned();
[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/email.rs:241:15
[INFO] [stderr]     |
[INFO] [stderr] 241 |           let mut response_body = &mut "".to_owned();
[INFO] [stderr]     |               ----^^^^^^^^^^^^^
[INFO] [stderr]     |               |
[INFO] [stderr]     |               help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.92s
[INFO] running `"docker" "inspect" "f5eb53f3d6255bd281588c90fe5d5adccba1fca6eb4f7b559ff168d70ae2bc1f"`
[INFO] running `"docker" "rm" "-f" "f5eb53f3d6255bd281588c90fe5d5adccba1fca6eb4f7b559ff168d70ae2bc1f"`
[INFO] [stdout] f5eb53f3d6255bd281588c90fe5d5adccba1fca6eb4f7b559ff168d70ae2bc1f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-61629/worker-7/try#e212b7d492c96d3837691ba29d32d5f468933fb8:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-61629/sources/try#e212b7d492c96d3837691ba29d32d5f468933fb8/reg/mandrill_sender/0.1.0:/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" "+e212b7d492c96d3837691ba29d32d5f468933fb8-alt" "test" "--frozen"`
[INFO] [stdout] 8804aefbebc5b4497fe8384d78b68410d7d49e4bbff80ec3a032c903ee169d8f
[INFO] running `"docker" "start" "-a" "8804aefbebc5b4497fe8384d78b68410d7d49e4bbff80ec3a032c903ee169d8f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/mandrill_sender-b70f1395bce43c71
[INFO] [stderr]    Doc-tests mandrill_sender
[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] [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" "8804aefbebc5b4497fe8384d78b68410d7d49e4bbff80ec3a032c903ee169d8f"`
[INFO] running `"docker" "rm" "-f" "8804aefbebc5b4497fe8384d78b68410d7d49e4bbff80ec3a032c903ee169d8f"`
[INFO] [stdout] 8804aefbebc5b4497fe8384d78b68410d7d49e4bbff80ec3a032c903ee169d8f