[INFO] cloning repository https://github.com/avranju/backup-to-blob
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/avranju/backup-to-blob" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fbackup-to-blob", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fbackup-to-blob'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 86aa9b8eb346a0e9766f221fac65376fe0d07328
[INFO] checking avranju/backup-to-blob against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Favranju%2Fbackup-to-blob" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/avranju/backup-to-blob
[INFO] finished tweaking git repo https://github.com/avranju/backup-to-blob
[INFO] tweaked toml for git repo https://github.com/avranju/backup-to-blob written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/avranju/backup-to-blob on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/avranju/backup-to-blob already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c4fcd25ecf1363105f98e39191f502d0b9e3127af178ad9b58b44f3c37b0a4c
[INFO] running `Command { std: "docker" "start" "-a" "1c4fcd25ecf1363105f98e39191f502d0b9e3127af178ad9b58b44f3c37b0a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c4fcd25ecf1363105f98e39191f502d0b9e3127af178ad9b58b44f3c37b0a4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c4fcd25ecf1363105f98e39191f502d0b9e3127af178ad9b58b44f3c37b0a4c", kill_on_drop: false }`
[INFO] [stdout] 1c4fcd25ecf1363105f98e39191f502d0b9e3127af178ad9b58b44f3c37b0a4c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid -Dunmustuse_in_always_ok" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7db604a07a561afc6751bb9f7f6af9f301158595c6fb19e478cb98d00b4216fa
[INFO] running `Command { std: "docker" "start" "-a" "7db604a07a561afc6751bb9f7f6af9f301158595c6fb19e478cb98d00b4216fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.46
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking untrusted v0.6.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking lock_api v0.3.1
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking net2 v0.2.38
[INFO] [stderr]    Compiling memoffset v0.5.1
[INFO] [stderr]     Checking crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling syn v1.0.6
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling hyper v0.12.36
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking atty v0.2.13
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling pkg-config v0.3.16
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking mio v0.6.19
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking want v0.2.0
[INFO] [stderr]     Checking futures-cpupool v0.1.8
[INFO] [stderr]     Checking rand_chacha v0.1.1
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[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking tokio-io v0.1.12
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[INFO] [stderr]     Checking string v0.2.1
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[INFO] [stderr]     Checking rand_xorshift v0.1.1
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[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking unicode-width v0.1.6
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking xml-rs v0.8.14
[INFO] [stderr]     Checking filetime v0.2.16
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking clap v2.33.0
[INFO] [stderr]     Checking RustyXML v0.1.1
[INFO] [stderr]     Checking md5 v0.6.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mime v0.3.14
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking tar v0.4.36
[INFO] [stderr]    Compiling ring v0.14.6
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]    Compiling lzma-sys v0.1.15
[INFO] [stderr]     Checking tokio-threadpool v0.1.16
[INFO] [stderr]     Checking num-integer v0.1.41
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking error-chain v0.10.0
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking serde_json v1.0.41
[INFO] [stderr]     Checking serde-xml-rs v0.3.1
[INFO] [stderr]     Checking env_logger v0.6.2
[INFO] [stderr]     Checking parking_lot_core v0.6.2
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking parking_lot v0.9.0
[INFO] [stderr]     Checking http-body v0.1.0
[INFO] [stderr]     Checking h2 v0.1.26
[INFO] [stderr]     Checking tokio-reactor v0.1.10
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling proc-macro-error v0.2.6
[INFO] [stderr]     Checking webpki v0.19.1
[INFO] [stderr]     Checking sct v0.5.0
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking ct-logs v0.5.1
[INFO] [stderr]     Checking rustls v0.15.2
[INFO] [stderr]     Checking webpki-roots v0.16.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]    Compiling structopt-derive v0.3.3
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking structopt v0.3.3
[INFO] [stderr]     Checking tokio-rustls v0.9.4
[INFO] [stderr]     Checking hyper-rustls v0.16.1
[INFO] [stderr]     Checking azure_sdk_for_rust v0.12.0
[INFO] [stderr]     Checking backup-to-blob v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: fields `account`, `key`, and `container` are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AzureStorageOpt {
[INFO] [stdout]    |        --------------- fields in this struct
[INFO] [stdout] 11 |     #[structopt(short, long)]
[INFO] [stdout] 12 |     account: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     key: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     container: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AzureStorageOpt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `storage` is never read
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     storage: AzureStorageOpt,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     #[structopt(short, long)]
[INFO] [stdout] 12 | |     account: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(short, long)]
[INFO] [stdout] 15 | |     key: String,
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     #[structopt(short, long)]
[INFO] [stdout] 18 | |     container: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     #[structopt(short, long)]
[INFO] [stdout] 30 | |     file_name: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `backup-to-blob` (bin "backup-to-blob") due to 4 previous errors; 2 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: fields `account`, `key`, and `container` are never read
[INFO] [stdout]   --> src/main.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | struct AzureStorageOpt {
[INFO] [stdout]    |        --------------- fields in this struct
[INFO] [stdout] 11 |     #[structopt(short, long)]
[INFO] [stdout] 12 |     account: String,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 15 |     key: String,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] ...
[INFO] [stdout] 18 |     container: String,
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AzureStorageOpt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `storage` is never read
[INFO] [stdout]   --> src/main.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 22 | struct Opt {
[INFO] [stdout]    |        --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     storage: AzureStorageOpt,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Opt` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 | /     #[structopt(short, long)]
[INFO] [stdout] 12 | |     account: String,
[INFO] [stdout]    | |___________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 | /     #[structopt(short, long)]
[INFO] [stdout] 15 | |     key: String,
[INFO] [stdout]    | |_______________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:17:5
[INFO] [stdout]    |
[INFO] [stdout] 17 | /     #[structopt(short, long)]
[INFO] [stdout] 18 | |     container: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<String, Infallible>
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 | /     #[structopt(short, long)]
[INFO] [stdout] 30 | |     file_name: String,
[INFO] [stdout]    | |_____________________^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `backup-to-blob` (bin "backup-to-blob" test) due to 4 previous errors; 2 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "7db604a07a561afc6751bb9f7f6af9f301158595c6fb19e478cb98d00b4216fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7db604a07a561afc6751bb9f7f6af9f301158595c6fb19e478cb98d00b4216fa", kill_on_drop: false }`
[INFO] [stdout] 7db604a07a561afc6751bb9f7f6af9f301158595c6fb19e478cb98d00b4216fa