[INFO] fetching crate must 0.2.0...
[INFO] checking must-0.2.0 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] extracting crate must 0.2.0 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate must 0.2.0 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate must 0.2.0
[INFO] finished tweaking crates.io crate must 0.2.0
[INFO] tweaked toml for crates.io crate must 0.2.0 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded mutator v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ae7fb4a0c79a63d5c6f66b3da57b769cc3eeb7ffce1d3bcbe7cc213aaffef19
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ae7fb4a0c79a63d5c6f66b3da57b769cc3eeb7ffce1d3bcbe7cc213aaffef19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ae7fb4a0c79a63d5c6f66b3da57b769cc3eeb7ffce1d3bcbe7cc213aaffef19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ae7fb4a0c79a63d5c6f66b3da57b769cc3eeb7ffce1d3bcbe7cc213aaffef19", kill_on_drop: false }`
[INFO] [stdout] 4ae7fb4a0c79a63d5c6f66b3da57b769cc3eeb7ffce1d3bcbe7cc213aaffef19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "-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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b42b3e8ca093c22f25f8f8c6c51ce17fa7a3921dbd3695f876bf82bbc3bd2f55
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "b42b3e8ca093c22f25f8f8c6c51ce17fa7a3921dbd3695f876bf82bbc3bd2f55", kill_on_drop: false }`
[INFO] [stderr]    Compiling winapi-build v0.1.1
[INFO] [stderr]     Checking winapi v0.2.8
[INFO] [stderr]     Checking utf8-ranges v0.1.3
[INFO] [stderr]     Checking regex-syntax v0.3.9
[INFO] [stderr]     Checking mutator v0.1.0
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking num-traits v0.1.43
[INFO] [stderr]     Checking must v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Error(Box<std::error::Error>),
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/matchers/text.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:58:40
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub trait MustBeAscii: Sized + Debug + AsciiExt {
[INFO] [stdout]    |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:76:44
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl<V> MustBeAscii for V where V: Debug + AsciiExt {}
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 |             &Error(ref err) => write!(f, "{}", err.description()),
[INFO] [stdout]    |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::ascii::AsciiExt::is_ascii`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:60:11
[INFO] [stdout]    |
[INFO] [stdout] 60 |         if self.is_ascii() {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::ascii::AsciiExt::eq_ignore_ascii_case`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:68:11
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if self.eq_ignore_ascii_case(other) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking env_logger v0.3.5
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/errors.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 |     Error(Box<std::error::Error>),
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn std::error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]  --> src/matchers/text.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::ascii::AsciiExt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:58:40
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub trait MustBeAscii: Sized + Debug + AsciiExt {
[INFO] [stdout]    |                                        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated trait `std::ascii::AsciiExt`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:76:44
[INFO] [stdout]    |
[INFO] [stdout] 76 | impl<V> MustBeAscii for V where V: Debug + AsciiExt {}
[INFO] [stdout]    |                                            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/errors.rs:77:43
[INFO] [stdout]    |
[INFO] [stdout] 77 |             &Error(ref err) => write!(f, "{}", err.description()),
[INFO] [stdout]    |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::ascii::AsciiExt::is_ascii`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:60:11
[INFO] [stdout]    |
[INFO] [stdout] 60 |         if self.is_ascii() {
[INFO] [stdout]    |                 ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::ascii::AsciiExt::eq_ignore_ascii_case`: use inherent methods instead
[INFO] [stdout]   --> src/matchers/text.rs:68:11
[INFO] [stdout]    |
[INFO] [stdout] 68 |         if self.eq_ignore_ascii_case(other) {
[INFO] [stdout]    |                 ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.98s
[INFO] running `Command { std: "docker" "inspect" "b42b3e8ca093c22f25f8f8c6c51ce17fa7a3921dbd3695f876bf82bbc3bd2f55", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b42b3e8ca093c22f25f8f8c6c51ce17fa7a3921dbd3695f876bf82bbc3bd2f55", kill_on_drop: false }`
[INFO] [stdout] b42b3e8ca093c22f25f8f8c6c51ce17fa7a3921dbd3695f876bf82bbc3bd2f55