[INFO] crate salmon 0.5.0 is already in cache
[INFO] testing salmon-0.5.0 against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] extracting crate salmon 0.5.0 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate salmon 0.5.0 on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate salmon 0.5.0
[INFO] finished tweaking crates.io crate salmon 0.5.0
[INFO] tweaked toml for crates.io crate salmon 0.5.0 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3d7a4263a613ef2417052013fe98d19ccdc0f6cb1983d45d2c3fd8be75f1986c
[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" "3d7a4263a613ef2417052013fe98d19ccdc0f6cb1983d45d2c3fd8be75f1986c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3d7a4263a613ef2417052013fe98d19ccdc0f6cb1983d45d2c3fd8be75f1986c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d7a4263a613ef2417052013fe98d19ccdc0f6cb1983d45d2c3fd8be75f1986c", kill_on_drop: false }`
[INFO] [stdout] 3d7a4263a613ef2417052013fe98d19ccdc0f6cb1983d45d2c3fd8be75f1986c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:38e1b949b06cde1964af550a6e548bd9b2b2ea170003ae122f8fc0886596cc07" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8641f17ea56f53a6c65c6c1fe6b7c8d4639b3cc7842f3b68008470d4779ee6f3
[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" "8641f17ea56f53a6c65c6c1fe6b7c8d4639b3cc7842f3b68008470d4779ee6f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling siphasher v0.2.3
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling bindgen v0.53.3
[INFO] [stderr]    Compiling shlex v0.1.1
[INFO] [stderr]    Compiling lazycell v1.2.1
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling safemem v0.3.3
[INFO] [stderr]    Compiling nodrop v0.1.14
[INFO] [stderr]    Compiling thin-slice v0.1.1
[INFO] [stderr]    Compiling pulldown-cmark v0.5.3
[INFO] [stderr]    Compiling ego-tree v0.6.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stderr]    Compiling num-traits v0.2.12
[INFO] [stderr]    Compiling libloading v0.5.2
[INFO] [stderr]    Compiling dtoa-short v0.3.2
[INFO] [stderr]    Compiling line-wrap v0.1.1
[INFO] [stderr]    Compiling servo_arc v0.1.1
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling backtrace v0.3.50
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr]    Compiling sass-sys v0.4.21
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling env_logger v0.7.1
[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling string_cache_codegen v0.4.4
[INFO] [stderr]    Compiling flate2 v1.0.16
[INFO] [stderr]    Compiling selectors v0.21.0
[INFO] [stderr]    Compiling clang-sys v0.29.3
[INFO] [stderr]    Compiling string_cache v0.7.5
[INFO] [stderr] error: could not compile `backtrace`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name backtrace --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.50/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi,artifacts --crate-type lib --emit=dep-info,metadata,link -Cembed-bitcode=no -C debuginfo=2 --cfg 'feature="addr2line"' --cfg 'feature="default"' --cfg 'feature="gimli-symbolize"' --cfg 'feature="miniz_oxide"' --cfg 'feature="object"' --cfg 'feature="std"' -C metadata=0a0671bfcc1e9e22 -C extra-filename=-0a0671bfcc1e9e22 --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern addr2line=/opt/rustwide/target/debug/deps/libaddr2line-13aa40ef8db1bf19.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-b00c34326580381c.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-e834449672905d13.rmeta --extern miniz_oxide=/opt/rustwide/target/debug/deps/libminiz_oxide-85a6bfd53150a7d5.rmeta --extern object=/opt/rustwide/target/debug/deps/libobject-042c9dfdad9d680b.rmeta --extern rustc_demangle=/opt/rustwide/target/debug/deps/librustc_demangle-45752d70cb3b1eba.rmeta --cap-lints allow --cap-lints=forbid` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "8641f17ea56f53a6c65c6c1fe6b7c8d4639b3cc7842f3b68008470d4779ee6f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8641f17ea56f53a6c65c6c1fe6b7c8d4639b3cc7842f3b68008470d4779ee6f3", kill_on_drop: false }`
[INFO] [stdout] 8641f17ea56f53a6c65c6c1fe6b7c8d4639b3cc7842f3b68008470d4779ee6f3