[INFO] fetching crate svgdom 0.18.0...
[INFO] checking svgdom-0.18.0 against try#f6e2f78768c57172b99c3e85892f867894dc7e30 for pr-75502
[INFO] extracting crate svgdom 0.18.0 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate svgdom 0.18.0 on toolchain f6e2f78768c57172b99c3e85892f867894dc7e30
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate svgdom 0.18.0
[INFO] finished tweaking crates.io crate svgdom 0.18.0
[INFO] tweaked toml for crates.io crate svgdom 0.18.0 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate svgdom 0.18.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded xmlparser v0.9.0
[INFO] [stderr]   Downloaded syn v0.15.35
[INFO] [stderr]   Downloaded fern v0.5.8
[INFO] [stderr]   Downloaded ctor v0.1.9
[INFO] [stderr]   Downloaded simplecss v0.2.0
[INFO] [stderr]   Downloaded svgtypes v0.5.0
[INFO] [stderr]   Downloaded xmlwriter v0.1.0
[INFO] [stderr]   Downloaded roxmltree v0.6.0
[INFO] [stderr]   Downloaded float-cmp v0.5.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bbf3199613d4063b67911784689795a9c25ed1a48698fe2ec524823d7bbaaab4
[INFO] running `Command { std: "docker" "start" "-a" "bbf3199613d4063b67911784689795a9c25ed1a48698fe2ec524823d7bbaaab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bbf3199613d4063b67911784689795a9c25ed1a48698fe2ec524823d7bbaaab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbf3199613d4063b67911784689795a9c25ed1a48698fe2ec524823d7bbaaab4", kill_on_drop: false }`
[INFO] [stdout] bbf3199613d4063b67911784689795a9c25ed1a48698fe2ec524823d7bbaaab4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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:e18d859f9e32a1da89bc7b2d7d51e13b57342044d1295d9fc0dd0068c58eb3d1" "/opt/rustwide/cargo-home/bin/cargo" "+f6e2f78768c57172b99c3e85892f867894dc7e30" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4788ae781b520aad32980df18f7f3b51cde86a89a7cb91d6f76478efe2de2ecd
[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" "4788ae781b520aad32980df18f7f3b51cde86a89a7cb91d6f76478efe2de2ecd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking xmlparser v0.9.0
[INFO] [stderr]     Checking float-cmp v0.5.0
[INFO] [stderr]     Checking xmlwriter v0.1.0
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pretty_assertions v0.6.1
[INFO] [stderr]     Checking log v0.4.8
[INFO] [stderr]     Checking svgtypes v0.5.0
[INFO] [stderr]     Checking simplecss v0.2.0
[INFO] [stderr]     Checking fern v0.5.8
[INFO] [stderr]     Checking roxmltree v0.6.0
[INFO] [stderr]     Checking svgdom v0.18.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/attributes.rs:145:26
[INFO] [stdout]     |
[INFO] [stdout] 145 |             Some(i) => { mem::replace(&mut self.0[i], attr); }
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `write_buf` found for struct `svgdom::Document` in the current scope
[INFO] [stdout]   --> benches/parser.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 doc.write_buf(&mut ouput_data);
[INFO] [stdout]    |                     ^^^^^^^^^ method not found in `svgdom::Document`
[INFO] [stdout] ...
[INFO] [stdout] 52 | do_write!(write_small, "benches/small.svg");
[INFO] [stdout]    | -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `write_buf` found for struct `svgdom::Document` in the current scope
[INFO] [stdout]   --> benches/parser.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 doc.write_buf(&mut ouput_data);
[INFO] [stdout]    |                     ^^^^^^^^^ method not found in `svgdom::Document`
[INFO] [stdout] ...
[INFO] [stdout] 53 | do_write!(write_medium, "benches/medium.svg");
[INFO] [stdout]    | ---------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0599]: no method named `write_buf` found for struct `svgdom::Document` in the current scope
[INFO] [stdout]   --> benches/parser.rs:45:21
[INFO] [stdout]    |
[INFO] [stdout] 45 |                 doc.write_buf(&mut ouput_data);
[INFO] [stdout]    |                     ^^^^^^^^^ method not found in `svgdom::Document`
[INFO] [stdout] ...
[INFO] [stdout] 54 | do_write!(write_large, "benches/large.svg");
[INFO] [stdout]    | -------------------------------------------- in this macro invocation
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `WriteBuffer`
[INFO] [stdout]   --> benches/parser.rs:11:24
[INFO] [stdout]    |
[INFO] [stdout] 11 | use svgdom::{Document, WriteBuffer};
[INFO] [stdout]    |                        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 previous errors; 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0599`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `svgdom`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]    --> src/attributes.rs:145:26
[INFO] [stdout]     |
[INFO] [stdout] 145 |             Some(i) => { mem::replace(&mut self.0[i], attr); }
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "4788ae781b520aad32980df18f7f3b51cde86a89a7cb91d6f76478efe2de2ecd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4788ae781b520aad32980df18f7f3b51cde86a89a7cb91d6f76478efe2de2ecd", kill_on_drop: false }`
[INFO] [stdout] 4788ae781b520aad32980df18f7f3b51cde86a89a7cb91d6f76478efe2de2ecd