[INFO] fetching crate urlencoding 2.1.3...
[INFO] checking urlencoding-2.1.3 against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] extracting crate urlencoding 2.1.3 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate urlencoding 2.1.3
[INFO] finished tweaking crates.io crate urlencoding 2.1.3
[INFO] tweaked toml for crates.io crate urlencoding 2.1.3 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate urlencoding 2.1.3 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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] a4fe7ef8982a3b9ec092e50c859c5b7738c7a55ea0f89e41c4dc6dd6c4b0b1be
[INFO] running `Command { std: "docker" "start" "-a" "a4fe7ef8982a3b9ec092e50c859c5b7738c7a55ea0f89e41c4dc6dd6c4b0b1be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4fe7ef8982a3b9ec092e50c859c5b7738c7a55ea0f89e41c4dc6dd6c4b0b1be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4fe7ef8982a3b9ec092e50c859c5b7738c7a55ea0f89e41c4dc6dd6c4b0b1be", kill_on_drop: false }`
[INFO] [stdout] a4fe7ef8982a3b9ec092e50c859c5b7738c7a55ea0f89e41c4dc6dd6c4b0b1be
[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] 478e0a24c390b117e14820e818dbdca81ebacda38636cad4bf6208b55a0c3ae8
[INFO] running `Command { std: "docker" "start" "-a" "478e0a24c390b117e14820e818dbdca81ebacda38636cad4bf6208b55a0c3ae8", kill_on_drop: false }`
[INFO] [stderr]     Checking urlencoding v2.1.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn to_str(&self) -> Cow<str> {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn to_str(&self) -> Cow<'_, str> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(data: &str) -> Cow<str> {
[INFO] [stdout]    |                     ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(data: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn encode_binary(data: &[u8]) -> Cow<str> {
[INFO] [stdout]    |                            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn encode_binary(data: &[u8]) -> Cow<'_, str> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/enc.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | /     encode_into(data, may_skip, |s| {
[INFO] [stdout] 93 | |         escaped.push_str(s);
[INFO] [stdout] 94 | |         Ok::<_, std::convert::Infallible>(())
[INFO] [stdout] 95 | |     }).unwrap()
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dec.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn decode(data: &str) -> Result<Cow<str>, FromUtf8Error> {
[INFO] [stdout]    |                     ^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn decode(data: &str) -> Result<Cow<'_, str>, FromUtf8Error> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dec.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn decode_binary(data: &[u8]) -> Cow<[u8]> {
[INFO] [stdout]    |                            ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn decode_binary(data: &[u8]) -> Cow<'_, [u8]> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:27:19
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn to_str(&self) -> Cow<str> {
[INFO] [stdout]    |                   ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                   |
[INFO] [stdout]    |                   the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 27 |     pub fn to_str(&self) -> Cow<'_, str> {
[INFO] [stdout]    |                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:72:21
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(data: &str) -> Cow<str> {
[INFO] [stdout]    |                     ^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 72 | pub fn encode(data: &str) -> Cow<'_, str> {
[INFO] [stdout]    |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/enc.rs:78:28
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn encode_binary(data: &[u8]) -> Cow<str> {
[INFO] [stdout]    |                            ^^^^^     ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 78 | pub fn encode_binary(data: &[u8]) -> Cow<'_, str> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `urlencoding` (lib) due to 1 previous error; 5 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<bool, Infallible>
[INFO] [stdout]   --> src/enc.rs:92:5
[INFO] [stdout]    |
[INFO] [stdout] 92 | /     encode_into(data, may_skip, |s| {
[INFO] [stdout] 93 | |         escaped.push_str(s);
[INFO] [stdout] 94 | |         Ok::<_, std::convert::Infallible>(())
[INFO] [stdout] 95 | |     }).unwrap()
[INFO] [stdout]    | |______^
[INFO] [stdout]    |
[INFO] [stdout]    = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dec.rs:19:21
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn decode(data: &str) -> Result<Cow<str>, FromUtf8Error> {
[INFO] [stdout]    |                     ^^^^            ^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 19 | pub fn decode(data: &str) -> Result<Cow<'_, str>, FromUtf8Error> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/dec.rs:29:28
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn decode_binary(data: &[u8]) -> Cow<[u8]> {
[INFO] [stdout]    |                            ^^^^^     ^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                            |
[INFO] [stdout]    |                            the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn decode_binary(data: &[u8]) -> Cow<'_, [u8]> {
[INFO] [stdout]    |                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `urlencoding` (lib test) due to 1 previous error; 5 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "478e0a24c390b117e14820e818dbdca81ebacda38636cad4bf6208b55a0c3ae8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "478e0a24c390b117e14820e818dbdca81ebacda38636cad4bf6208b55a0c3ae8", kill_on_drop: false }`
[INFO] [stdout] 478e0a24c390b117e14820e818dbdca81ebacda38636cad4bf6208b55a0c3ae8
